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Thermal residual stress analysis of diamond coating on graded cemented carbides

  • Zi-qian Huang (黄自谦)
  • Yue-hui He (贺跃辉)Email author
  • Hai-tao Cai (蔡海涛)
  • Cong-hai Wu (武从海)
  • Yi-feng Xiao (肖逸锋)
  • Bai-yun Huang (黄伯云)
Article

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 

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Copyright information

© Central South University 2008

Authors and Affiliations

  • Zi-qian Huang (黄自谦)
    • 1
  • Yue-hui He (贺跃辉)
    • 1
    Email author
  • Hai-tao Cai (蔡海涛)
    • 2
  • Cong-hai Wu (武从海)
    • 3
  • Yi-feng Xiao (肖逸锋)
    • 1
  • Bai-yun Huang (黄伯云)
    • 1
  1. 1.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaChina
  2. 2.School of Mathematical Science and Computing TechnologyCentral South UniversityChangshaChina
  3. 3.College of ScienceHenan University of Science and TechnologyLuoyangChina

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