Fretting wear resistance of amorphous/amorphous(AlCrFeNi)N/TiN high entropy nitride nanolaminates  

作　　者：Qingchun Chen Xiyu Xu An Li Quande Zhang Hengming Yang Nan Qiu Yuan Wang 

机构地区：[1]Key Laboratory of Radiation Physics and Technology of Ministry of Education,Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,China [2]The First Sub-institute,Nuclear Power Institute of China,Chengdu 610041,China [3]School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266525,China

出　　处：《Journal of Materials Science & Technology》2024年第15期41-53,共13页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.11775150);Natural Science Foun-dation of Sichuan,China(No.2023NSFSC0408);the Founda-tion of Key Laboratory of Radiation Physics and Technology of the Ministry of Education(No.2021SCURPT02).

摘　　要：The application of amorphous high entropy ceramics as wear-resistant materials is limited due to their inherent brittleness at room temperature and strain softening during deformation.In order to overcome this limitation,we constructed amorphous/amorphous(AlCrFeNi)N/TiN nanolaminates with varying mod-ulation period thickness by introducing a second amorphous phase through reactive radio frequency(RF)magnetron sputtering,along with corresponding monolithic amorphous films.Microstructure,mechanical properties,and tribological behaviors of the films were characterized wear in detail.Fretting wear results show that the nanolaminates with an average modulation period of 6 nm exhibited a wear rate of 2.8 times lower than that of the(AlCrFeNi)N film and 8.4 times lower than that of the TiN film.Further anal-ysis using FIB-TEM revealed that the enhanced wear resistance of(AlCrFeNi)N/TiN nanolaminates was at-tributed to the high-density heterointerfaces.These interfaces inhibited the initiation and propagation of mature shear bands and acted as barriers to stress distribution.Additionally,the oxide composite layer at the interface demonstrated a synergistic effect through a mechanically induced tribo-chemical reaction,resulting in slight plastic deformation.For the amorphous(AlCrFeNi)N film,moderate wear resistance was achieved through the formation of transfer layer at the interface.For the amorphous TiN film,the dimensional stability of the film deteriorates due to the significant strain softening that occurs during deformation.This study deepens our understanding of the friction mechanisms involved in amorphous high entropy ceramics,offering valuable insights for the design of high damage-resistant materials.

关 键 词：High entropy alloy NANOLAMINATES Magnetron sputtering Fretting wear Microstructure 

分 类 号：TG139.8[一般工业技术—材料科学与工程]