Effects of High-energy Ion Source Cleaning Technology on the Microstructure and Mechanical Properties of AlCrN Coatings

doi:10.3901/JME.2017.24.034

Abstract

Abstract: Ion source enhanced cleaning technology has been used before coating deposition due to its significant contribution to improve the properties of coatings. High-energy Ar⁺ ion cleaning source is used. The surface roughness of the substrates is characterized after utilizing various ion cleaning conditions before deposition. The microstructure, surface morphology, hardness, adhesion strength, friction and wear properties of the AlCrN coatings deposite on each ion-cleaned surface are systematically investigated. The results show that these high-energy Ar⁺ ions more effectively clean the surface of the workpieces with low bias voltage and significantly improve the adhesion strength of the coatings up to 48.7 N, which is much higher than that of the coatings fabricated through traditional cleaning techniques, and the wear and friction coefficient also decreases. In addition, after high-energy Ar⁺ ions, the coated tool life is also increased by 3 times in high-speed cutting tests.

Key words: AlCrN coating, cutting performance, ion source cleaning, wear

CLC Number:

TG156

ZHANG Shihong, MAO Taojie, FANG Wei, CAI Fei, WANG Qimin, ZHANG Tengfei. Effects of High-energy Ion Source Cleaning Technology on the Microstructure and Mechanical Properties of AlCrN Coatings[J]. Journal of Mechanical Engineering, 2017, 53(24): 34-41.

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