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Mechanical and Wear Properties of AlCrN/AlCrVN Multi-layer Coatings with Different Numbers of Bilayers
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1.Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Anhui University of Technology, Maanshan 243000, China;2.Research Center of Modern Surface & Interface Engineering, Anhui University of Technology, Maanshan 243002, China;3.School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, China

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Fund Project:

Science Foundation of Anhui Province (1808085QE131); Tribology Science Fund of State Key Laboratory of Tribology (SKLTKF18B13); Key Research and Development Plan of Anhui Province (1804b06020370)

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    Abstract:

    AlCrN/AlCrVN multi-layer coatings with different numbers (1, 2, 4, 6) of bilayers were deposited by arc ion plating method. The effects of multi-layer structure on microstructure, mechanical properties, tribological properties, and cutting performance were investigated. The results show that the deposited AlCrN/AlCrVN multi-layer coatings are mainly composed of solid solution (Al,Cr)N with preferred growth orientation of [111] crystal orientation. Compared with other multi-layer coatings, the lowest coefficient of friction (~0.46), the lowest wear rate of 0.15×10-11 m3/N·m, the highest hardness of HK0.05=38 000 MPa, and coating-substrate bonding strength of LC2=53±1 N can be achieved for AlCrN/AlCrVN multi-layer coating with 6 bilayers at high temperature. The improvement in hardness and wear resistance is due to the formation of more interfaces between adjacent layers. Cutting test results reveal that AlCrN/AlCrVN coating with 6 bilayers has the longest cutting length of 7.4 m under the cutting wear standard condition of flank wear VB=0.2 due to its relatively higher hardness and better wear resistance.

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[Sidra Iram, Cai Fei, Wang Jianming, Fang Leiqi, Zhang Jiamin, Farooq Ahmad, Zhang Shihong. Mechanical and Wear Properties of AlCrN/AlCrVN Multi-layer Coatings with Different Numbers of Bilayers[J]. Rare Metal Materials and Engineering,2022,51(1):74~82.]
DOI:10.12442/j. issn.1002-185X.20200803

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History
  • Received:October 19,2020
  • Revised:November 14,2020
  • Adopted:November 25,2020
  • Online: February 04,2022
  • Published: January 28,2022