Laser clad NiCrBSi alloy wear-resistance coating with RE addition on heavy duty spur gear flank

被引：3
作者：
Zhao, N. [1 ,2 ]
Tao, L. [1 ,2 ]
Guo, H. [1 ,2 ]
Zhang, M. Q. [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, Sch Mechatron, Xian 710072, Shaanxi, Peoples R China
[2] Shaanxi Engn Lab Transmiss & Controls, Xian 710072, Shaanxi, Peoples R China
来源：
2017 INTERNATIONAL CONFERENCE ON STRUCTURAL, MECHANICAL AND MATERIALS ENGINEERING (ICSMME 2017) | 2017年 / 248卷
基金：
中国国家自然科学基金;
关键词：
BEHAVIOR; MICROSTRUCTURE; MECHANISM; YTTRIUM;
D O I：
10.1088/1757-899X/248/1/012016
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this research the wear-resistance composite coating successfully produced on heavy duty gear work surface by laser was reported. The coating containing 99 wt.% NiCrBSi alloy and 1 wt.% RE (rare earth element) oxidation powder. The RE addition coupled with laser operating parameters optimization caused elimination of both cracks and pores meanwhile further enhanced comprehensive properties of the laser layer. The coating microhardness, microstructure, phase construction and wear behaviors were tested by hardness tester, SEM equipped with EDS, XRD and tribometer, respectively. The results reflected the fact that the RE addition enhanced the coating ability of wear resistance and laser clad layer properly bonded with the gear flank. The wear volume loss rate of coating was half of that of the gear flank metal the COF curve of coating kept bellow that of the gear flank steel.
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页数：6
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