Electroless nickel plating

About: Electroless nickel plating is a research topic. Over the lifetime, 1593 publications have been published within this topic receiving 14940 citations.

A facile process combined with defect-induced electroless plating and selective laser sintering forming to fabricate catalytically active free-standing material

Abstract: The most common method for preparation of catalytically active free-standing hybrid material (CAFH) is that supporting material is formed and subsequent catalytic agent deposited on its surface. But it remains challenging to agilely prepare CAFH with different shape and size. We employ a facile process combined with defect-induced electroless nickel plating and selective laser sintering (SLS) forming to fabricate CAFH. Results manifested CH3COOH-etched treatment resulted in the formation of defect (amorphous structure, amide group and hole) on the Nylon 12 (PA12) surface, which would induce electroless Ni plating. The mechanism of the electroless plating is the destruction of the structure of [C6H5O73−-Ni] ligand around defect; subsequently, the reduction of the REDOX barrier. The following laser sintering of the plated PA12 powder could fabricate CAFH with an irregular network. There are two stages during the SLS process: balling of particle and formation of sintered neck. The combination of the structural stability, high surface area and recyclability gives a CAFH with demonstrated catalytic property. CAFH is agile to prepare, easy for quick-to-assemble material and realizable in CAFH shape design. The new technology possesses vast exploration and application value.

Method for electrolyzing electroless nickel plating waste solution

Abstract: PROBLEM TO BE SOLVED: To efficiently oxidize and decompose the org. acids in the treatment of an electroless nickel plating waste soln., to simplify the process and to conduct highly efficient and inexpensive electrolysis. SOLUTION: A current is applied to the anode 2 and cathode 5 arranged in an electroless nickel plating waste soln. A from a DC power source 6 to electrolyze the waste soln. A. In this case, the cathode 5 with a copper powder 4 deposited on the metal surface is used. The copper powder 4 deposited on the metal surface by the electrolytic reduction of an electrolyte contg. copper ion and having 0.02-0.5 μm size can also be used. Further, an anode formed with an insoluble material is provided in an electrolytic cell contg. the waste soln., a cathode with the electrode substrate surface coated with the copper powder having 0.02-5 μm grain diameter is furnished, and a current is applied to the anode and cathode from a DC power source to constitute the electrolyzer of an electroless nickel plating waste soln.

Low Temperature Electroless Nickel Plating by Use of Ultrasonic Wave

Abstract: The purpose of the study was to lower plating temperature of conventional nickel electroless plating process by use of ultrasonic wave. Effect of bath contents and plating parameters on plating rate was emphasized. Properties of the deposits such as morpology, microstructure, phosphorus content and bardness were studies. Compared with conventional electroless nickel plating process, the deposits obtained are greatly improved with higher phosphorus content, hardness, more compact and uniform microstructure.

Method for recycling phosphorus resource from electroless nickel plating wastewater

Abstract: The invention discloses a method for recycling a phosphorus resource from electroless nickel plating wastewater, and the method is low in investment in used equipment, low in treatment cost, simple in method, and free from secondary pollution. A final product is phosphate. The method comprises the following steps: (1) adjusting the pH value of the denickeled electroless nickel plating wastewater containing a phosphate component to be 4-12; (2) adding metal salt to the wastewater according to the condition that the molar ratio of phosphate to the metal salt is 1 to (0.1-10.0), and mixing evenly to form a mixed liquid; (3) controlling the temperature of the mixed liquid to be 20-90 DEG C, and reacting for 0.5-24 hours; and (4) forming a phosphate product, and carrying out solid-liquid separation to obtain the phosphorus resource. According to the method, phosphorus in the electroless nickel plating wastewater can be recycled; the product with relatively good industrial value is prepared; the technique is simple; the used equipment is low in cost; the product is high in purity; no secondary pollution is generated; the disposal value of the electroless nickel plating wastewater is improved; the method has relatively good economical and environmental benefits; and large-scale industrial production is facilitated.

Study on Growth Mode and Properties of Electroless Nickel Plating on Aluminum Alloy

Abstract: In this paper, Ni-P alloy coating was prepared by electroless nickel plating with alkaline plating-acid plating double solution system on aluminum alloy 6061 sheet. This paper mainly studies the changes of coating morphology after pretreatment in different alkaline plating baths and the properties of the electroless nickel plating after different time plating in the acidic chemical plating bath, analyze the experimental results, use scanning electron microscopy (SEM) to observe the surface morphology of the samples, and use EDS determine the coating composition, then obtained the growth pattern of the electroless nickel plating layer on aluminum alloy, test the properties of the coating, and the surface roughness, adhesion, microhardness and porosity of the coating were measured.