自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 15    No. 2    April 2008

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Thermal residual stress analysis of diamond coating on graded cemented carbides
HUANG Zi-qian(黄自谦)1, HE Yue-hui(贺跃辉)1, CAI Hai-tao(蔡海涛)2,WU Cong-hai(武从海)3 , XIAO Yi-feng(肖逸锋)1, HUANG Bai-yun(黄伯云)1

1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;2. School of Mathematical Science and Computing Technology, Central South University, Changsha 410083, China;3. College of Science, Henan University of Science and Technology, Luoyang 471003, China

Abstract: 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.

 

Key words: graded cemented carbides; diamond coating; finite element method; carburizing

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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