Journal of Northeastern University(Natural Science) ›› 2025, Vol. 46 ›› Issue (4): 33-42.DOI: 10.12068/j.issn.1005-3026.2025.20230286

• Mechanical Engineering • Previous Articles     Next Articles

Effect of TiAlSiN Coating Structure on Its Mechanical Properties

Xing-long LIU1,2, Chen LI1, Zeng LIN1   

  1. 1.School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China
    2.NEU Mat (Tai’an) Surface Technology Co. ,Ltd. ,Tai’an 271024,China. Corresponding author: LIN Zeng,E-mail: zlin@mail. neu. edu. cn
  • Received:2023-10-09 Online:2025-04-15 Published:2025-07-01

Abstract:

TiSi (atomic ratio 80∶20) and AlTi (atomic ratio 67∶33) alloys were used as target materials by the vacuum arc ion plating technique. Two layers and multiple layers of TiAlSiN coating were deposited on the WC-Co substrates to study the effects of the coating structure on the microstructure, mechanical properties, and tribological properties of the coatings. TEM,SEM, EDS, XRD, nano-indentation instrument, microhardness instrument and binding force tester were used to analyze the cross sections of the coatings and the morphologies, compositions, microstructures, elastic moduli, microhardness and binding force of the coating. The tribological properties of the coatings were analyzed by the friction and wear testing machine. The results showed that the binding force (greater than 200 N) of the multilayer coatings is higher than that of the double-layer coatings. The double-layer coatings exhibit stronger resistance to plastic deformation, while the multilayer coatings show stronger resistance to elastic deformation. The friction coefficient of the coatings under low loads is greatly affected by the surface topography of the coating, while the surface topography of the coating under large load has little effect on the friction coefficient. Oxidation wear occurs only in the double-layer coatings, while abrasive wear occurs in the friction wear process of both coatings. The wear resistance of the multi-layer coatings is higher than that of the double-layer coatings.

Key words: arc ion plating, TiAlSiN, microstructure, mechanical property, tribological property

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