Thermal residual stress analysis of diamond coating on graded cemented carbides

被引：5

作者：

Huang Zi-qian ^{[1
]}

He Yue-hui ^{[1
]}

Cai Hai-tao ^{[2
]}

Wu Cong-hai ^{[3
]}

Xiao Yi-feng ^{[1
]}

Huang Bai-yun ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Cent S Univ, Sch Mat Sci & Comp Technol, Changsha 410083, Peoples R China

[3] Henan Univ Sci & Technol, Coll Sci, Luoyang 471003, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2008年 / 15卷 / 02期

基金：

中国国家自然科学基金;

关键词：

graded cemented carbides; diamond coating; finite element method; carburizing;

D O I：

10.1007/s11771-008-0032-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Finite element model was developed to analyze thermal residual stress distribution of diamond coating on graded and homogeneous substrates. Graded cemented carbides were formed by carburizing pretreatment to reduce the cobalt content in the surface layer and improve adhesion of diamond coating. The numerical calculation results show that the surface compressive stress of diamond coating is 950 MPa for graded substrate and 1 250 MPa for homogenous substrate, the thermal residual stress decreases by around 24% due to diamond coating. Carburizing pretreatment is good for diamond nucleation rate, and can increase the interface strength between diamond coating and substrate.

引用

页码：165 / 169

页数：5

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