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Sökning: WFRF:(Xian Lijun)

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  • Xian, Guang, et al. (författare)
  • Study on the growth and wear behavior of the TiAlN-based composite coating deposited on TiCN-based cermets with different binder phase
  • 2020
  • Ingår i: Wear. - : ELSEVIER SCIENCE SA. - 0043-1648 .- 1873-2577. ; 460
  • Tidskriftsartikel (refereegranskat)abstract
    • The TiAlN-based composite coating was coated on TiCN-based cermets with different binder phase by arc ion plating. The effects of binder phase within cermets substrates on the microstructure, mechanical properties and wear behavior of the composite coating were investigated. The results show that the growth of the composite coating is affected by binder phase in the cermets substrates. With a higher content of Co binder in the cermets, the composite coating grows faster. Ni as a binder phase in the cermets is more favorable for the growth rate of the surface coating. The grain size of the coating on 10%Co-TiCN-based cermets is the finest and the hardness is the highest. The variation of binder phase in the cermets substrates leads to different adhesion strength of the composite coating. The adhesion strength of the composite coating on the 10%Co-TiCN-based cermets is the highest, which is because of the smallest differences in hardness and thermal expansion coefficient for this coating/substrate couple. The wear behavior of composite coating on 10%Co-TiCN-based substrate is dominated by abrasive wear while that on the other cermets with Ni binder or higher content of Co binder is a mixture form of diffusion wear, oxidation wear and abrasive wear.
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3.
  • Xian, Lijun, et al. (författare)
  • Effect of TiC addition and Co binder content in cemented carbide substrates on the microstructure and mechanical properties of the TiAlN-based composite films
  • 2020
  • Ingår i: Vacuum. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0042-207X .- 1879-2715. ; 182
  • Tidskriftsartikel (refereegranskat)abstract
    • The development of cutting technologies promotes the diversification of cutting tool materials. To better guide the design and preparation of the surface films on different tools, it is necessary to explore the relationship between substrate materials and films properties. The TiAlN-(TiAlN/CrAlSiN)-TiAlN composite films were coated on cemented carbide substrates with different content of Co binder and TiC addition by arc ion plating. The results showed that Co binder in the cemented carbide reduced the surface energies of substrates, and the film on the cemented carbide substrate with higher Co content grew slower. (Ti,W)C phase formed in the cemented carbide substrate since WC dissolved in TiC, which was favorable for the growth of film. (Ti,W)C phase in the cemented carbide substrate improved the bonding strength of the composite film, but it reduced the hardness of the film. High Co binder content in cemented carbide substrate was disadvantageous to both the adhesion and hardness of the film. The composite films deposited on the WC-6wt%Co and WC -15 wt%TiC-6wt% Co achieved the maximum hardness and best bonding strength, respectively. The wear mechanism of the composite films on all different cemented carbide substrates was the mixture form of abrasive wear, oxidative wear, diffusion and adhesive wear.
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  • Resultat 1-3 av 3

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