Patent
Preparation method of magnesium alloy surface metal plating layer
TLDR
In this article, a preparation method of a magnesium alloy surface metal plating layer, which belongs to the technical field of metal corrosion and protection, is described, where an advanced chemical nickel solution is prepared from 15 to 30 g/L of nickel hypophosphite.Abstract:
The invention relates to a preparation method of a magnesium alloy surface metal plating layer, which belongs to the technical field of metal corrosion and protection. The method comprises the following steps: (1) carrying out preliminary treatment on the surface of the magnesium alloy; (2) carrying out advanced chemical nickel plating on the surface of the magnesium alloy after the preliminary treatment, wherein an advanced chemical nickel solution is prepared from 15 to 30 g/L of nickel hypophosphite, 5 to 20 g/L of sodium hypophosphite, 8 to 30 g/L of organic coordination agents, 10 to 50 g/L of inorganic coordination agents, 3 to 5 g/L of glycin, 5 to 15 g/L of ammonium hydrogen fluoride, 5 to 10 g/L of sodium acetate, 3 to 5 ppm of potash iodate and 10 to 30 mg/L of dodecyl sodium sulfate, the temperature of the advanced chemical nickel plating is between 50 and 70 DEG C, the pH value is between 7 and 10, and the time is between 30 and 120 min; and (3) carrying out thickening chemical nickel plating or plating other metals on the surface of the magnesium alloy after the advanced chemical nickel plating. The method of the invention improves the combining force of an advanced plating layer and a magnesium alloy base body, and reaches the national standard after the addition of a proper amount of pyrophosphate complexing aids. Metal decorative protective plating layers with strong combining force and high corrosion performance can be obtained after further conventional nickel plating or other metal plating on the advanced chemical nickel plating layer.read more
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Patent
Magnesium alloy fluoride-free chemical nickel-plating solution and nickel plating technology thereof
Hu Bonian,Yu Gang,Dalong Yan +2 more
TL;DR: In this paper, a magnesium alloy fluoride-free chemical nickel-plating solution and a nickel plating technology thereof are presented. But the plating solution is free of fluoride, compositions are safe, environment is not polluted, amorphous nickel-phosphorus alloy is arranged on the outer layer of a composite plating layer obtained through nickel-polysilicon plating, the composite layer is high in compactness and good in corrosion resistance and binding force, and the good industrial application prospect is achieved
Patent
Multi-layer chemical nickel plating processing method of magnesium-lithium alloys
TL;DR: In this paper, a multi-layer chemical nickel plating processing method of magnesium-lithium alloys was proposed, where a creative acid-pickling formula and two-time activation were adopted, so that the bonding force of a plating layer is enhanced; the pyrophosphate with good dispersing capacity is adopted for plating copper, the thickness of the copper plating layers is uniform, and the porosity factor is low, and besides, the corrosion resistance of products is greatly improved.
Patent
Multi-component complex agent and acidic chemical plating nickel and phosphorus solution with same
Zhang Ling,Zhang Xueming +1 more
TL;DR: In this paper, a multi-component complex agent and an acidic chemical plating nickel and phosphorus solution with the same ingredients were used to achieve the same results as in this paper.
Patent
Method for preparing nickel-phosphorus-ferrite particle composite coating
TL;DR: In this paper, a method for preparing a nickel-phosphorus-ferrite particle composite coating on a matrix material is presented, which includes the following steps of: preparing 20 to 50g/L ferrite aqueous dispersion; preparing a base coating solution; adding the ferrite dispersion into the base coating, according to a volume ratio of 1 to 1 so as to obtain a coating solution.
Patent
Deposition method for abrasion-resisting electric conduction nickel plating layer on surface of magnesium-lithium alloy
TL;DR: In this paper, a deposition method for an abrasion-resisting electric conduction nickel plating layer on the surface of a magnesium-lithium alloy was proposed.
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Patent
Chemical plating method for Mg and its alloy
TL;DR: The chemical plating process for magnesium base material includes the following steps: 1. alkaline dewaxing the magnesium-base material; 2. activating with acid solution containing fluoric salt and no chlorine ion and in pH 2.0-5.0; 3. chemical nickel pre-plating with the plating solution containing nickel salt in 10-100 g/L concentration, pyrophosphite in 10 − 80 g /L concentration and no -clon- ion and pH 3 −7; and 5. optional heat treatment as mentioned in this paper.
Patent
Plating solution of magnesium alloy nickle sulfate main salt and technology of chemical plating thereof
Yu Gang,Yaokun Xiao,Hu Bonian +2 more
TL;DR: In this paper, a plating solution of magnalium alloy Nickel sulfate and its chemical plating technique is described, which is made up of: (1) 5 to 40g of nickel sulfate, (2) 10 to 50g.
Patent
Surface chemical plating Ni-P process using nickel sulfate as main salt
TL;DR: In this article, a chemical Ni-P plating technique on the surface of magnesium alloy which takes nickel sulfate (NiSO4, 6H20) as the main salt is described.
Patent
Electroless nickel plating method for magnesium alloy material
Mizunari Shigetoshi,Fujii Keiji +1 more
TL;DR: In this paper, an electroless nickel plating method for a magnesium alloy material was proposed. But the plating process was performed using a weakly alkaline electroless bath.