The effects of annealing treatment on microstructure and contact resistance properties of cold sprayed Ag-SnO2 coating

被引：18
|
作者：
Wang, Jun [1 ]
Wang, Chen [1 ]
Kang, Yongqiang [2 ]
机构：
[1] Xian Polytech Univ, Sch Text & Mat, Xian 710048, Peoples R China
[2] Shanxi Datong Univ, Inst Solid State Phys, Datong 037009, Shanxi, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 714卷
基金：
美国国家科学基金会;
关键词：
Microstructure; Contact resistance; Cold sprayed; Ag-SnO2; ARC;
D O I：
10.1016/j.jallcom.2017.04.227
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, the effects of annealing treatment on microstructure and contact resistance properties of Ag-SnO2 coating prepared by cold spraying was investigated. The microstructure of cold sprayed Ag-SnO2 coating and its arc erosion morphology were investigated by Scanning Electron Microscopy (SEM). The average surface roughness Sa and surface profiles of Ag-SnO2 coating samples after arc erosion testing were also researched by Scanning Laser Microscope (SLM) 3D surface technique. It can be found that the surface morphology of arc eroded Ag-SnO2 coating annealed at 850 degrees C was stable and uniform compared with that of original coating samples. Moreover, Ag-SnO2 coatings annealed at 850 degrees C exhibits excellent contact resistance performance as applied in coatings stabilize in 3.5 m Omega. The present experimental results indicated that annealing treatment is the main factor that effects the microstructure and contact resistance properties of cold sprayed Ag-SnO2 coating and the contact resistance properties of cold sprayed Ag-SnO2 coating annealed at 850 degrees C exhibited low and stable value. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：698 / 703
页数：6
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