Cr powder-activated induction brazing of diamond grits with Ag-Cu-Zn alloy

被引:9
|
作者
Zhou, Yumei [1 ]
Wang, Chengyong [1 ]
Zhang, Fenglin [1 ]
Xu, Zhenchao [1 ]
机构
[1] Guangdong Univ Technol, Fac Mech & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
activated; Ag-Cu-Zn alloy; bonding strength; carbide; Cr7C3; Cr powder; diamond grits; graphitization; grinding; induction brazing; interfacial microstructure; morphology; reaction layer; reaction mechanism; wettability;
D O I
10.1080/10426910701861093
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Cr powder was used to activate the brazing of diamond grits with Ag-Cu-Zn alloy. The interfacial microstructure among the brazing alloy, the diamond grit, and the steel substrate is also examined by optical microscopy, scanning electron microscopy (SEM), and X-ray diffraction. It was found that Cr7C3 formed between diamond and Ag-Cu-Zn alloy was the main reason for improving the wettability of Ag-Cu-Zn alloy to the diamond and the strong bonding of diamond grit. A graphitization layer was formed on the surface of diamond under high temperature brazing. Bonding strength of the brazed diamond grits were also examined by a grinding test.
引用
收藏
页码:352 / 356
页数:5
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