Electroless deposition of graded Ni-P coatings

被引:44
作者
Hadipour, A. [1 ]
Monirvaghefi, S. M. [1 ]
Bahrololoom, M. E. [2 ]
机构
[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
[2] Shiraz Univ, Dept Mat Engn, Shiraz, Iran
关键词
Electroless; Graded coating; Nickel-phosphorus coating; Wear; TRIBOLOGICAL PROPERTIES; WEAR BEHAVIOR; ALLOY; OPTIMIZATION; FRICTION; AGENT;
D O I
10.1179/1743294414Y.0000000430
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, graded Ni-P coatings were deposited on copper substrates by electroless plating method. The surface morphology and cross-section observations were made using scanning electron microscopy and optical microscopy. Degree of crystallinity was determined using X-ray diffraction (XRD). Results showed that the use of electroless Ni-P coatings with gradual change of phosphorus content led to an increase in surface smoothness and the formation of more compact nodules. The XRD patterns indicated that by heat treating, the amorphous phase of the high phosphorus layer was changed to crystalline phases, such as Ni, Ni2P and Ni3P. The graded Ni-P coatings had high wear resistance, and the coatings with the sequence of low P/medium P/high P layers from the substrate to the surface had the best wear resistance.
引用
收藏
页码:399 / 405
页数:7
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