Showing papers on "Electroless nickel plating published in 2014"
TL;DR: This work describes a process to make anodes for organic solar cells from copper-nickel nanowires with solution-phase processing, which exhibited efficiencies of 4.9%.
Abstract: This work describes a process to make anodes for organic solar cells from copper–nickel nanowires with solution-phase processing. Copper nanowire films were coated from solution onto glass and made conductive by dipping them in acetic acid. Acetic acid removes the passivating oxide from the surface of copper nanowires, thereby reducing the contact resistance between nanowires to nearly the same extent as hydrogen annealing. Films of copper nanowires were made as oxidation resistant as silver nanowires under dry and humid conditions by dipping them in an electroless nickel plating solution. Organic solar cells utilizing these completely solution-processed copper–nickel nanowire films exhibited efficiencies of 4.9%.
177 citations
TL;DR: In this paper, the effect of three kinds of acid pickling formula and activation formula on magnesium alloy was studied by contrast experiment and the experimental results indicated that after disposed by acid pickingling formula of HNO3 25 ml/L, H3PO4 25ml/L and room temperature, NH4H2PO4 80−100 ǫg/L NH4F 30−50 g/L, room temperature NH4M 2.
Abstract: Magnesium alloy was disposed by three kinds of acid pickling formula and activation formula and the effect of the three kinds of acid activation formula on magnesium alloy was studied by contrast experiment. The experimental results indicated that after disposed by acid pickling formula of HNO3 25 ml/L, H3PO4 25 ml/L, room temperature and activation formula of NH4H2PO4 80–100 g/L, NH4F 30–50 g/L, room temperature, magnesium alloy could realize electroless nickel plating directly. The properties of the nickel plating layer and activation layer were researched by electrochemical polarization curves, X-ray diffraction and scanning electronic microscope and its energy spectrometer. The results showed that the structure of Ni–P coating was amorphous, the Ni–P coating was very meticulous and uniform, the activation coating was mainly MgF2 and Mg2P2O7, and comparing with magnesium substrate, the corrosion potential of magnesium alloys increased by about 1.1 V and the corrosion current density declined obviously. Tested by thermal shock test and file test, the adhesion of magnesium alloy and Ni–P coating was good.
50 citations
01 Jan 2014
TL;DR: In this paper, a study on mechanical and fracture properties, through the experimentation techniques has been carried out on a Al 7075-T6 and it coated with an Electroless Nickel deposits of 10-20μm in coating thickness.
Abstract: A study on mechanical and fracture properties, through the experimentation techniques has been carried out on a Al 7075-T6 and it coated with an Electroless Nickel deposits of 10–20 μm in coating thickness. In the recent years there has been considerable interest in the Electroless Nickel plating due to its extensive use in electronics, automobiles, aerospace and other industries. Electroless Nickel plating is a controlled autocatalytic reduction of nickel ions using suitable reducing agent such as sodium hypophosphite. ASTM Standard – E 399 for plane strain fracture toughness determination was adhered in this investigation. The results obtained, show that the EN coating can give rise to a significant improvement in the fracture behavior (performance) of the substrate and also it has shown that EN coating exhibit a very good adhesive property to the alloy material when the tensile stresses exceeding the yield strength are applied to the system and performance of these pretreatments was studied by SEM analysis.
45 citations
TL;DR: In this paper, NiCl 2 was applied to graphite powders by electroless plating in an alkaline bath having nickel chloride as a source of nickel and sodium borohydride (NaBH 4 ) reducing agent.
Abstract: In this paper, nickel-coated graphite powders were prepared by electroless plating. After a novel and facile pretreatment of graphite, electroless plating was carried out in an alkaline bath having nickel chloride (NiCl 2 ) as a source of nickel and sodium borohydride (NaBH 4 ) as a reducing agent. During the electroless nickel plating, mechanical or ultrasonic agitation was adopted to improve the properties of coating. The coated graphite powders were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). The results show that two different morphologies of Ni–B coatings were achieved on the surface of graphite. Both coatings on graphite are continuous and uniform. For mechanical agitation process, the coating exhibits a sesame-seed slice-like structure which is composed of large spherical grains. The ultrasonic agitation process results in a faster deposition rate and a well-knit membrane-like structure coating free of voids. This is attributed to the easier nucleation and fine particle distribution of nickel nuclei under the ultrasonic agitation.
32 citations
TL;DR: In this article, a brief introduction of the fundamental aspects underlying the technological principles and conventional process of electroless nickel-phosphorus (Ni-P) coatings is presented.
Abstract: Electroless plating has been considered as an effective approach to provide protection and enhancement for metallic materials with many excellent properties in engineering field. This paper begins with a brief introduction of the fundamental aspects underlying the technological principles and conventional process of electroless nickel–phosphorus (Ni–P) coatings. Then this paper discusses different electroless nickel plating, including binary plating, ternary composite plating and nickel plating with nanoparticles and rare earth, with the intention of improving the surface performance on steel substrate in recent years in detail. Based on different coating process, the varied features depending on the processing parameters are highlighted. Separately, diverse preparation techniques aiming at improvement of plating efficiency are summarized. Moreover, in view of the outstanding performance, such as corrosion resistance, abrasive resistance and fatigue resistance, this paper critically reviews the behaviors and features of various electroless coatings under different conditions.
29 citations
TL;DR: In this article, an electroless Ni-P plating using supercritical carbon dioxide (scCO2) in conjunction with copolymer-based hydrophilic modification was applied to an acrylonitrile-butadiene-styrene (ABS) substrate.
26 citations
15 Sep 2014
TL;DR: Near-monodisperse, micrometer-sized polypyrrole-palladium nanocomposite-coated polystyrene (PS) particles have been coated with Ni overlayers by electroless plating in aqueous media and it was indicated that the particle surface had a flaked morphology after Ni coating.
Abstract: Near-monodisperse, micrometer-sized polypyrrole-palladium (PPy-Pd) nanocomposite-coated polystyrene (PS) particles have been coated with Ni overlayers by electroless plating in aqueous media. Good control of the Ni loading was achieved for 1.0 μm diameter PPy-Pd nanocomposite-coated PS particles and particles of up to 20 μm in diameter could also be efficiently coated with the Ni. Laser diffraction particle size analysis studies of dilute aqueous suspensions indicated that an additional water-soluble colloidal stabilizer, poly(N-vinyl pyrrolidone), in the electroless plating reaction media was crucial to obtain colloidally stable Ni-coated composite particles. Elemental microanalysis indicated that the Ni loading could be controlled between 61 and 78 wt% for the 1.0 μm-sized particles. Scanning/transmission electron microscopy studies revealed that the particle surface had a flaked morphology after Ni coating. Spherical capsules were obtained after extraction of the PS component from the Ni-coated composite particles, which indicated that the shell became rigid after Ni coating. X-ray diffraction confirmed the production of elemental Ni and X-ray photoelectron spectroscopy studies indicated the existence of elemental Ni on the surface of the composite particles.
22 citations
TL;DR: In this article, the UV-Fenton process was used to treat a spent electroless nickel plating bath, and to recover high purity ferric phosphate which could be used as a raw material in lithium-ferric phosphate batteries.
21 citations
TL;DR: In this article, a block copolymer PP-b-polyethylene oxide (PEO) was blended with PP by injection molding to modify the hydrophilicity of the PP-plate surface.
Abstract: Supercritical carbon dioxide (scCO 2 )-assisted electroless Ni–P plating with co-polymer-based hydrophilic modification was investigated for polypropylene (PP) substrates. The technique consists of three steps: the first step is a hydrophilic modification of PP, the second is scCO 2 -assisted impregnation of the substrate with Pd(hfa) 2 , and the third is the electroless plating reaction. Due to the hydrophobic nature of PP, the aqueous plating solution cannot diffuse into a plain PP substrate to form Ni–P metal. In this study, a block copolymer PP-b-polyethylene oxide (PEO) (PP-b-PEO) was blended with PP by injection molding to modify the hydrophilicity of the PP-plate surface. The blend morphology of PP-b-PEO and PP strongly affected the adhesiveness of the metal layer to the substrate. Five grades of PP with different viscosities were used to investigate the effects of the viscosity ratio of PP to PP-b-PEO on the blend morphology and the adhesiveness of the metal to the polymer. By bringing the viscosity ratio close to a value of approximately twelve, the degrees of elongation and orientation of the PP-b-PEO domains near the surface were maximized, resulting in the thickest metal–PP composite layer and the highest adhesiveness. By controlling the blend morphology, a uniform Ni–P layer was successfully formed with an average adhesive strength of 8.8 ± 1.8 N/cm to the PP blend substrate.
21 citations
TL;DR: In this article, iminodiacetic acid-functionalized poly(glycidyl methacrylate)grafted carbon fibers (CCFs) were prepared by electrochemically mediated atom transfer radical polymerization (eATRP) for nano-nickel recovery from spent electroless nickel (EN) plating baths.
Abstract: In this work, iminodiacetic acid-functionalized poly(glycidyl methacrylate)grafted carbon fibers (CCFs) were prepared by electrochemically mediated atom transfer radical polymerization (eATRP) for nano-nickel recovery from spent electroless nickel (EN) plating baths. The adsorption behaviors of Ni2+ were investigated at CCFs in the spent EN plating baths. The adsorption kinetics perfectly fitted pseudo-second order model with a chemisorption process. The thermodynamic parameters suggested that adsorption was feasible, spontaneous, and endothermic. The adsorption maximum capacity was 0.908 mM g−1 under optimum conditions (pH 5.2, 50 °C and 40 min). The present materials were carefully characterized by the Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscope, and electrochemical techniques. Experimental results showed that CCFs were successfully prepared, which were efficient adsorbent and support for nano-nickel recovery from the spent EN plating baths.
20 citations
TL;DR: In this paper, the microstructural evolution of nanosized tungsten carbide during heatup stage of sintering of a novel electroless nickel-coated nanostructured WC-Co powder was investigated.
TL;DR: In this paper, biocompatible and biodegradable iron coatings were directly electroless plated on pure magnesium in the alkaline plating solutions containing three different reducing agents: KBH 4, NH 2 -NH 2 and NaH 2 PO 2.
21 Sep 2014
TL;DR: In this article, the effects of hard surface polishing grits and activation on electroless-nickel (EN) plating on cast aluminium alloy substrates in sodium hypophosphite baths were examined.
Abstract: This work examined effects of hard surface polishing grits and activation on electroless-nickel (EN) plating on cast aluminium alloy substrates in sodium hypophosphite baths As-received aluminium alloy sample sourced from automobile hydraulic brake master cylinder piston was melted in electric furnace and sand cast into rod The cast samples were polished using different grits (60 μm–1200 μm) before plating The effects on adhesion, appearance, and quantity of EN deposits on substrates were studied Observation shows that the quantity of EN deposit is partly dependent on the alloy type and roughness of the surface of the substrates, whereas the adhesion and brightness are not solely controlled by the degree of surface polishing The best yield in terms of adhesion and appearance was obtained from the activation in zincate and palladium chloride solutions Higher plating rates (g/mm2/min) of , , and were obtained from chromate, zincate, and chloride than , , and as obtained from HCl etched, NaOH, and H2O activated surfaces, respectively
TL;DR: In this article, the recovery of nickel from spent EN baths by using dioxide thiourea (TD) as the reductant was studied, and the final products were characterized by scanning electron microscopy (SEM) and X-ray diffractometry (XRD).
Patent•
17 Jul 2014
TL;DR: In this article, an electroless nickel plating solution and a method of using the same is described and the use of the sulfonated compound brightener results in a bright electroless Nickel deposit on various substrates having a high gloss value.
Abstract: An electroless nickel plating solution and a method of using the same is described. The electroless nickel plating solution comprises (i) a source of nickel ions; (ii) a reducing agent; (iii) one or more complexing agents; (iv) one or more bath stabilizers; (v) a brightener, said brightener comprising a sulfonated compound having sulfonic acid or sulfonate groups; and (vi) optionally, one or more additional additives. The use of the sulfonated compound brightener results in a bright electroless nickel deposit on various substrates having a high gloss value.
TL;DR: In conclusion, it has been analyzed that the SSOEP baths provided maximum ratio of percent pore densification per unit metal film thickness (PPDδ) and hold the key for further fine tuning of the associated degrees of freedom.
TL;DR: In this article, the NTP-graft-polymerization-treated polytetrafluoroethylene (PTFE) film was applied to flexible printed substrates and millimeter-wave antenna.
Abstract: Microfabrication by photolithography and nickel plating of fluoropolymer film, exposed to atmospheric-pressure nonthermal-plasma (NTP) graft polymerization, are investigated. Electroless nickel plating on the NTP-graft-polymerizationtreated polytetrafluoroethylene (PTFE) film is successfully achieved. Highly adhesive nickel plating is obtained by reverse bend test. Furthermore, photolithographic patterns are formed on the plated PTFE film. This process is expected to be applied to flexible printed substrates and millimeter-wave antenna.
TL;DR: In this paper, an attempt has been made to impart electrical conductivity onto cellulose fibres via an electroless nickel plating process, which achieved a homogeneous, continuous layer of Ni on the cellulose fibers and optimized the plating conditions to achieve this.
Abstract: The aim of this project was to fabricate electroless nickel-coated cellulose fibres. Ultimately, these nickel-coated cellulose fibres will be used to develop a cost-effective polymer composite for electromagnetic interference (EMI) shielding and/or electrostatic discharge (ESD) applications. An attempt has been made to impart electrical conductivity onto cellulose fibres via an electroless nickel plating process. The aim was to achieve a homogeneous, continuous layer of Ni on the cellulose fibres, and the plating conditions were optimized to achieve this. The relationship between the coating morphology and the performance of the coated fibre was also of interest. Testing was carried out using cellulose filter paper and then loose cellulose fibres. Scanning electron microscopic (SEM) images of nickel-coated filter paper showed that nickel particles are bonded to the cellulose fibres. The coating appeared more compacted and continuous as plating time increased, corresponding to lower surface resistivity. This observation suggested a correlation between morphology and electrical conductivity of the coating. For nickel-coated cellulose fibres, after optimization of plating conditions, a uniform deposition of nickel particles around the cellulose surfaces was confirmed by SEM images. EDS and XRD results confirmed similar coating could be produced on filter paper and cellulose fibres. SEM images of cross-sectioned nickel-coated cellulose fibres illustrated nickel particles had penetrated into the inner walls of the cellulose fibres. This impregnation of the fibres should act to increase the bonding between nickel coating and cellulose fibres. These nickel-impregnated cellulose fibres could now be incorporated into a polymer matrix to create an electrically conducting composite with the right processing parameters.
TL;DR: In this paper, carboxymethyl chitosan-palladium (CMCS-Pd) complexes were prepared by complexing adsorption between CMCS and Pd2+.
Abstract: Electromagnetic shielding polyester fabrics were prepared using carboxymethyl chitosan-palladium (CMCS-Pd) complexes as activation solution, followed by electroless nickel plating. CMCS-Pd complexes were prepared by the complexing adsorption between CMCS and Pd2+. The effects of reaction time and pH value on the adsorption of Pd2+ by CMCS were discussed. The maximum adsorption capacity was calculated as 4.27 mmol/g. CMCS-Pd complexes were characterized by ultraviolet (UV) spectrophotometer and Fourier transform-infrared (FTIR) spectroscopy. The induction time of electroless plating decreased gradually with the increase of Pd2+ concentration. The lowest surface resistance 125 mΩ/sq of the treated polyester fabric was obtained when Pd2+ concentration in CMCS-Pd complex was 1.5 g/l. The prepared polyester fabrics had excellent electromagnetic shielding effectiveness (SE) of 40–60 dB. The treated polyester fabrics were also characterized by scanning electron microscopy (SEM). Results showed that CMCS-Pd was effective to form an active catalyzed layer on polyester substrate and the 1.5 g/l Pd2+ was sufficient to initiate electroless nickel plating reaction. The CMCS-Pd complex activation and electroless nickel plating treatment caused small changes in the polyester fabrics’ tensile strength and air permeability.
TL;DR: Ni was effectively recovered from spent electroless nickel (EN) plating baths by forming a nano-nickel coated activated carbon composite (Ni/AC), and Ni/AC was successfully used as a catalyst for ultrasonic degradation of 2,6-dichlorophenol.
Abstract: Ni was effectively recovered from spent electroless nickel (EN) plating baths by forming a nano-nickel coated activated carbon composite. With the aid of ultrasonication, melamine–formaldehyde–tetraoxalyl-ethylenediamine chelating resins were grafted on activated carbon (MFT/AC). PdCl2 sol was adsorbed on MFT/AC, which was then immersed in spent electroless nickel plating bath; then nano-nickel could be reduced by ascorbic acid to form a nano-nickel coating on the activated carbon composite (Ni/AC) in situ. The materials present were carefully examined by Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, X-ray photoelectron spectroscopy and electrochemistry techniques. The resins were well distributed on the inside and outside surfaces of activated carbon with a size of 120 ± 30 nm in MFT/AC, and a great deal of nano-nickel particles were evenly deposited with a size of 3.8 ± 1.1 nm in Ni/MFT. Moreover, Ni/AC was successfully used as a catalyst for ultrasonic degradation of 2,6-dichlorophenol.
TL;DR: In this paper, a CMOS-MEMS probe chip was designed and fabricated using the [email protected] CMOS process of the Taiwan Semiconductor Manufacturing Company (TSMC), which involves steps such as lithography, electroless nickel (EN) plating, grinding and dry etching.
TL;DR: In this paper, the Ni plated Ti powder was characterised by scanning electron microscopy, energy dispersive spectrometer analysis and X-ray fluorescence, and it was found that a pure/uniform Ni layer may be deposited on the Ti powder particles.
Abstract: In this study, Ti powder (average size: 45 μm) was plated/coated by electroless Ni with hydrazine hydrate as reductant. The Ni plating was carried out at 85°C and pH 9–10. The influence of process parameters such as plating period as well as reductant concentration was investigated. The Ni plated Ti powder was characterised by scanning electron microscopy, energy dispersive spectrometer analysis and X-ray fluorescence. It is found that a pure/uniform Ni layer may be deposited on the Ti powder particles. The deposited mass increases as plating period/reductant concentration increases.
TL;DR: In this article, a new application of conventional electroless nickel plating to improve the interfacial properties of PBO fibers was reported, which showed that the process parameters had a great influence on surface morphology and roughness of nickel-plated PBO fiber.
Abstract: A new application of conventional electroless nickel plating to improve the interfacial properties of PBO fibers was reported. The relationship between surface morphology and interfacial properties of nickel-plated PBO fiber was explored. The continuous nickel coating consisted of nickel and phosphorus elements determined by Energy dispersive spectrometer (EDS) and transmission electron microscope (TEM), exhibiting high adhesive durability. The influence of bath temperature and plating time on the crystal structure, microstructure and mechanical properties of nickel-plated PBO fibers was systematically investigated. X-ray diffractometer (XRD) results revealed that the crystal structure among nickel-plated PBO fibers did not show differences. Scanning electron microscope (SEM) and Atomic force microscope (AFM) images showed that the process parameters had a great influence on surface morphology and roughness of nickel-plated PBO fibers, which could directly affect the interfacial properties of nickel-plated PBO fibers. Single fiber pull-out testing results indicated that the interfacial shear strength (IFSS) of PBO fibers after electroless nickel plating had a significant improvement, which reached maximum at 85 °C for 20 min. Single fiber tensile strength of nickel-plated PBO fibers was slightly lower than that of untreated one. Thermo gravimetric analysis (TGA) indicated that nickel-plated PBO fiber had excellent thermal stability.
TL;DR: In this article, nano-engineered self-lubricating particles comprised of hexagonal-boron-nitride powder (hBN) encapsulated in nickel have been developed for cold spray coating of aluminum components.
Abstract: Nano-engineered self-lubricating particles comprised of hexagonal-boron-nitride powder (hBN) encapsulated in nickel have been developed for cold spray coating of aluminum components. The nickel encapsulant consists of several nano-sized layers, which are deposited on the hBN particles by electroless plating. In the cold spray deposition, the nickel becomes the matrix in which hBN acts as the lubricant. The coating demonstrated a very promising performance by reducing the coefficient of friction by almost 50% and increasing the wear resistance more than tenfold. The coatings also exhibited higher bond strength, which was directly related to the hardenability of the particles. During the encapsulation process, the hBN particles agglomerate and form large clusters. De-agglomeration has been studied through low- and high-energy ball milling to create more uniform and consistent particle sizes and to improve the cold spray deposition efficiency. The unmilled and milled particles were characterized with Scanning Electron Microscopy, Energy-Dispersive X-Ray Spectroscopy, BET, and hardness tests. It was found that in low-energy ball milling, the clusters were compacted to a noticeable extent. However, the high-energy ball milling resulted in breakup of agglomerations and destroyed the nickel encapsulant.
Patent•
09 Jul 2014
TL;DR: In this article, a non-metallic light-induced catalyst including an alcohol and/or an aldehyde was added to a thermoplastic carrier material, and molding the resulting mixture by an injection molding machine to form a structural component.
Abstract: A method for manufacturing a three-dimensional integrated circuit. The method includes: 1) adding a non-metallic light-induced catalyst including an alcohol and/or an aldehyde to a thermoplastic carrier material, and molding the resulting mixture by an injection molding machine to form a structural component; 2) irradiating a surface of the structural component with a laser ray to form a line pattern thereon; 3) immersing the structural component in a metal ion solution at room temperature for between 5 and 7 minutes; 4) washing the structural component with distilled water, and immersing the structural component in an aqueous solution including a reducing agent for between 5 and 7 minutes to allow the surface of the structural component to form a metal core; and 5) performing electroless copper plating and medium-phosphorus electroless nickel plating on an area comprising the metal core to yield a conductor track.
TL;DR: In this paper, a defect-free and well adhesive Ni-P coating can be successfully obtained due to its uniform nucleation and growth based on such pretreatment, which could significantly improve the corrosion resistance of AZ91D substrate.
Patent•
01 Jul 2014TL;DR: In this article, an electroless nickel plating solution was proposed to provide high flexibility to a plated layer and having improved stability, which was shown to reduce the formation of pits in a flexible nickel plated surface.
Abstract: The present invention provides an electroless nickel plating solution supplying high flexibility to a plated layer and having improved stability. The electroless nickel plating solution according to an embodiment of the present invention is an electroless nickel plating solution for forming a flexible nickel plated layer using an electroless nickel plating method. The electroless nickel plating solution comprises: a nickel metal salt providing a nickel ion for plating, and containing sulfamic acid nickel; a reducer reducing the nickel ion for plating; a complexing agent forming a complex together with the nickel ion for plating; and a cyan-based stabilizer providing stability of the electroless nickel plating solution and preventing the generation of pits in a flexible nickel plated layer.
Patent•
23 Apr 2014
TL;DR: In this article, an electroless nickel plating solution treatment method was proposed, which includes steps: using spent bath of EN plating to produce powder; in a powder coating process, continually stirring the spent bath with powder added, heating and replenishing solution containing sodium hypophosphite, stirring and heating after the EN turned from nickel-rich blue solution into transparent solution; performing advanced oxidation, filtering out produced white precipitate of nickel hydroxide, and adding the white precipitates into a next batch of spent bath for dissolving and recycling; subjecting the
Abstract: The invention provides an electroless nickel plating solution treatment method. The method includes steps: using spent bath of electroless nickel plating to produce powder; in a powder coating process, continually stirring the spent bath of electroless nickel plating with powder added, heating and replenishing solution containing sodium hypophosphite, stirring and heating after the spent bath of electroless nickel plating turns from nickel-rich blue solution into transparent solution; performing advanced oxidation, filtering out produced white precipitate of nickel hydroxide, and adding the white precipitate into a next batch of spent bath of electroless nickel plating for dissolving and recycling; subjecting the solution treated at the last step to advanced oxidation. Nickel in the spent bath can be reduced below 1mg/L after the spent bath is treated by the method, recycling of 99.9% of nickel is realized while functional powder materials with high added value can be produced, and further, pollution of nickel to the environment is eliminated.
01 Jun 2014
TL;DR: In this paper, Palladium-Copper inter-diffusion behavior was proven affected by flow rate variation of chemical solution during copper activation process, and several physical failure analysis approaches were used.
Abstract: Electroless Nickel deposition on Copper metallization required a thin Palladium layer (<; 5nm) as catalyst for Copper activation purpose. By using several physical failure analysis approaches, Palladium-Copper inter-diffusion behavior was proven affected by flow rate variation of chemical solution during Copper activation process.
Patent•
29 Jul 2014
TL;DR: In this paper, a method for surface treatment of an object at least in part made of magnesium alloy characterized by comprising the steps of: chemical degreasing of the surface, pickling of thesurface, neutralization of the surfaces, activation of surface and surface conversion.
Abstract: Method for surface treatment of an object at least in part made of magnesium alloy characterized by comprising the steps of: chemical degreasing of the surface, pickling of the surface, neutralization of the surface, activation of the surface and surface conversion. The aforementioned steps allow to deposit on the treated object a coat of chemical nickel uniform in thickness.