Reconditioning of Electroless Nickel Plating Bath on Magnesium Alloys

2011 ◽  
Vol 686 ◽  
pp. 720-726
Author(s):  
Xin Kuan Liu ◽  
Ping Liu ◽  
Yang Hui Xiang ◽  
Wen Bin Hu ◽  
Wen Jiang Ding
Keyword(s):  
Magnesium Alloys ◽  
Detrimental Effect ◽  
Electroless Nickel ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Plating Bath ◽  
Phosphorous Content ◽  
Fluorine Ions ◽  
Bath Stability

The reconditioning operation of electroless nickel (EN) plating was studied and the influence of aging on the deposition speed, phosphorous content and stability of the operating solution was analyzed. The results showed that aging of the EN bath caused a dramatic declining of the deposition speed and the bath stability, while a slow increasing in phosphorous content of the deposit. Fluoride of NaF and NiF2would precipitate from the bath due to the accumulation of sodium and fluorine ions during the replenishment. The sediment of NaF and NiF2had a detrimental effect on the EN process and would deteriorate the protection of EN plating.

scholarly journals 2-Mercaptobenzimidazole, 2-Mercaptobenzothiazole, and Thioglycolic Acid in an Electroless Nickel-Plating Bath

2015 ◽  
Vol 2015 ◽  
pp. 1-11
Author(s):  
Ahmet Ozan Gezerman ◽  
Burcu Didem Çorbacıoğlu
Keyword(s):  
Waste Water ◽  
Electroless Plating ◽  
Thioglycolic Acid ◽  
Electroless Nickel ◽  
Optical Microscope ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Plating Bath ◽  
Bath Solution ◽  
Microscope Images

The use of three different materials, 2-mercaptobenzimidazole, 2-mercaptobenzothiazole, and thioglycolic acid, was investigated to improve the performance of electroless nickel-plating baths. By changing the concentrations of these materials, sample plates were coated. Optical microscope images were obtained by selecting representative coated plates. From the results of the investigations, the effects of these materials on electroless nickel plating were observed, and the most appropriate amounts of these materials for nickel plating were determined. Moreover, the nickel plating speed observed with the bath solution containing 2-mercaptobenzimidazole, 2-mercaptobenzothiazole, and thioglycolic acid is higher than that in the case of traditional electroless plating baths, but the nickel consumption amount in the former case is lower. In order to minimize the waste water generated from electroless nickel-plating baths, we determined the lowest amounts of the chemicals that can be used for the concentrations reported in the literature.

Effect on Electroless Nickel Coating on Magnesium Alloy by Nickel Electroless Plating Parameters

2011 ◽  
Vol 295-297 ◽  
pp. 1522-1525
Author(s):  
Xiao Min Wang ◽  
Jun Duo
Keyword(s):  
Magnesium Alloy ◽  
Process Parameters ◽  
Ph Value ◽  
Nickel Coating ◽  
Electroless Nickel ◽  
Molar Ratio ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Optimum Conditions ◽  
Bath Stability

Electroless nickel plating on magnesium alloy was studied when NiSO4as the main salt in the solution. The influence of the composition of the solution and process parameters on the coating appearance, the plating rate and bath stability was studied too. As a result, the optimum conditions of electroless nickel are: The main salt and reducing agent molar ratio between 0.3 and 0.45, mixed complexion agents was used, temperature 90°C, pH value 6.5.

A ZERO-EMISSION ELECTROLESS NICKEL PLATING BATH

2019 ◽  
Vol 26 (01) ◽  
pp. 1850130
Author(s):  
WANMIN LIU ◽  
QILONG LIU ◽  
LV XU ◽  
MULAN QIN ◽  
JIYONG DENG
Keyword(s):  
Phosphorus Content ◽  
Electroless Nickel ◽  
Raw Material ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Hypophosphorous Acid ◽  
Plating Bath ◽  
Excellent Corrosion Resistance ◽  
Zero Emission ◽  
Better Than

A zero-emission electroless nickel plating bath was investigated, which consisted of nickel hypophosphite, hypophosphorous acid, lithium acetate, citric acid and maleic acid. The bath stability, bath life and plating rate were 68.0[Formula: see text]min, 8 cycles and 13.39[Formula: see text][Formula: see text]m/h, respectively. The Ni–P plating layer showed smooth appearance with lots of small continuous nodules, with 12.23[Formula: see text]wt.% phosphorus content. The electrochemical measurements showed that the deposit exhibited excellent corrosion resistance. All of these properties of the zero-emission plating bath and its deposit were better than those of the popular plating solution and its layer. It is most significant that the spent plating bath can be used directly as a raw material to prepare LiFePO4/C materials, which conforms to the concept of circular economy.

scholarly journals ELECTROLESS NICKEL PLATING: BATH CONTROL

2005 ◽  
Vol 38 (1) ◽  
pp. 339-344
Author(s):  
R. Tenno ◽  
K. Kantola ◽  
H. Koivo
Keyword(s):  
Electroless Nickel ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Plating Bath

Study on the process of electroless nickel plating on magnesium alloys

2005 ◽  
Vol 83 (2) ◽  
pp. 91-94 ◽  
Author(s):  
Y. Wu ◽  
Y. Xiang ◽  
W. Hu ◽  
C. Zhao ◽  
W. Ding
Keyword(s):  
Magnesium Alloys ◽  
Electroless Nickel ◽  
Electroless Nickel Plating ◽  
Nickel Plating

Synergistic Fluoropolymer Coating on Magnesium Alloys

2005 ◽  
Vol 488-489 ◽  
pp. 673-676 ◽  
Author(s):  
Hong Qing Zou ◽  
Ji Cheng Lu ◽  
Jin Zhang ◽  
Hou Chang Wu ◽  
Min Fang
Keyword(s):  
Magnesium Alloys ◽  
Coefficient Of Friction ◽  
Salt Spray ◽  
Electroless Nickel ◽  
Neutral Salt ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Long Duration ◽  
Fluoropolymer Coating ◽  
Dynamic Coefficient Of Friction

The synergistic fluoropolymer self-lubrication coatings on magnesium alloys were studied. Magnesium alloy was firstly treated by electroless nickel plating. Then micropores of electroless nickel plating layer was enlarged. Then the fluoropolymer particles were infused into micropores, precise vacuum heat treatment ensured thorough infusion with fluoropolymer, finally the synergistic coating was formed. The hardness of the coating reached 600HV, the dynamic coefficient of friction of the coating was less than 0.15, and the low coefficient of friction could be kept during a long duration wear to realize the permanent dry lubrication. The corrosion resistance was also excellent to endure 5% neutral salt spray test for 500 hours. Also the structure and composition of the coating were observed and studied.

Recovery of high purity ferric phosphate from a spent electroless nickel plating bath

2014 ◽  
Vol 16 (3) ◽  
pp. 1217-1224 ◽  
Author(s):  
Peng Liu ◽  
Chaolin Li ◽  
Xingang Liang ◽  
Gang Lu ◽  
Jianhui Xu ◽  
...  
Keyword(s):  
High Purity ◽  
Electroless Nickel ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
Plating Bath ◽  
Ferric Phosphate
Sign in / Sign up

Export Citation Format

Share Document