Characterization and Tribological Behavior of TiAlN/TiAlCN Multilayer Coatings

Author:

Lei Zhefeng1,Zhu Xiaodong2,Li Yanhuai2,Song Zhongxiao3,Liu Haiping4,Fu Yong Qing5

Affiliation:

1. Xi’an Aviation Brake Technology Co., Ltd., Xi’an 710075, Shaanxi, China; State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China

2. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China

3. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China e-mail:

4. Xi’an Aviation Brake Technology Co., Ltd., Xi’an 710075, Shaanxi, China e-mail:

5. Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK

Abstract

Effects of partial pressure of methane on deposition rate, hardness, bonding strength and friction coefficient of TiAlN/TiAlC0.37N0.63 multilayer coating were investigated. The TiAlN coating was deposited at a N2 flow rate of 70 sccm, and TiAlC0.37N0.63 coating were deposited at a N2 flow rate of 35 sccm and a CH4 flow rate of 35 sccm. TiAlN/TiAlC0.37N0.63 multilayer coatings with different modulation periods but the same total thickness of 3.56 μm were deposited on high speed steel (HSS) substrates using multi-arc ion plating technology. Microhardness and tribological measurement show that the multilayer coating with a modulating ratio of 1:1 and a modulation period of 68 nm had a hardness of 2793.9 HV0.10, an excellent bonding strength of 52 N, and the minimum friction coefficient of 0.46 and a relatively low wear rate.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

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