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A Method for Electroless Nickel Plating on Aluminum Alloy Surface
Engineering Science
Volume 5, Issue 3, September 2020, Pages: 33-37
Received: Jan. 17, 2020; Accepted: Jun. 8, 2020; Published: Jul. 23, 2020
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Ming Chen, Dongfeng Commercial Vehicle Technology Center, Wuhan, China
Wei Dong, Faculty of General Education, Wuhan International Trade University, Wuhan, China
Cherry Qin, SGS-CSTC Standards Technical Services Co., Ltd. Wuhan Branch, Wuhan, China
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According to the following plating processes: deoiling → washing → pickling → washing → drying → weighing → electroless plating → washing → drying → weighing. It can obtain Ni-P deposit on aluminum alloy. It studied the influence of bath composition and process parameters on the composition and deposition rate of the alloy coating. Under temperature of 85~90°C, nickel sulfate hexahydrate 15~35g/L, sodium hypophosphite 10~30g/L, sodium citrate 5~10g/L, tartaric acid 1~2g/L, pH 3~5, reaction time 30~60min, load factor 1.0~2.0dm2/L. The microstructure, surface morphology, composition and valence of the elements in the alloy coating were studied by metallographic microscope, SEM, EDS and other modern analytical methods. The size of spherical grain was below 1um and compact distribution. The chemical coatings were mainly composed two elements, which were phosphorous and nickel. The mass percentage of phosphorous was about 15%, and the other one was about 80~85%. The corrosion resistance of the alloy coating was studied by CASS [1] test method, through 80h CASS test detection, the protection class of chemical coating can be reached 5. The relevant evaluation criteria can be referred to GB/T 6461-2002 [2]. The results show that the Ni-P binary amorphous alloy can be successfully prepared by this process.
Electroless Plating, Alloy, Plating, Ni, P, Amorphous Alloy
To cite this article
Ming Chen, Wei Dong, Cherry Qin, A Method for Electroless Nickel Plating on Aluminum Alloy Surface, Engineering Science. Vol. 5, No. 3, 2020, pp. 33-37. doi: 10.11648/
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
GB/T 12967.3-2008 Test methods for anodic oxidation coatings of aluminium and aluminium alloys-Part 3: Copper accelerated acetic acid salt spray test (CASS test).
GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates-Rating of test specimens and manufactured articles subjected to corrosion tests.
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