Effect of bilayer number on mechanical and wear behaviours of the AlCrN/AlCrMoN coatings by AIP method

ABSTRACT

AlCrN/AlCrMoN multilayer coatings with various bilayer numbers (1, 2, 4, and 6) were deposited on high speed steel (HSS) via arc ion plating technology. The effects of bilayer numbers on the microstructure, mechanical and tribological properties were investigated. XRD and TEM results showed that the solid solution (Al, Cr, Mo) N was the main phase in the AlCrN/AlCrMoN multilayer coatings. As compared with the AlCrN/AlCrMoN-1 coating, the AlCrN/AlCrMoN multilayer coatings showed the improved adhesion, hardness and tribology performance. The AlCrN/AlCrMoN-4 coating showed the highest adhesion (Lc2 = 52 N) and micro-hardness (3500 HK_0.05). The AlCrN/AlCrMoN-4 coating also exhibited the lowest friction coefficient and wear rate both at room temperature and high temperature due to the optimal structure and good overall performance.

KEYWORDS:

• AlCrN/AlCrMoN
• multilayer coatings
• adhesion
• wear
• Adhesion
• High temperature wear
• Microstructure
• Lubricating

Acknowledgements

This work was supported by the Science Foundation of Anhui Province (Grant no. 1808085QE131), Key research and development plan of Anhui Province (No. 1804b06020370). This work was also supported by the Tribology Science Fund of State Key Laboratory of Tribology (Grant no. SKLTKF18B13).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Natural Science Foundation of Anhui Province [grant number 1808085QE131], Key research and development plan of Anhui Province (No. 1804b06020370). This work was also supported by the Tribology Science Fund of State Key Laboratory of Tribology [grant number SKLTKF18B13].