首页|Enhancement of thermal stability and high-temperature oxidation resistance of chromium oxide-based films by addition of rare earth element Y

Enhancement of thermal stability and high-temperature oxidation resistance of chromium oxide-based films by addition of rare earth element Y

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Chromium oxide ceramic materials are widely used in high-temperature applications requiring high wear resistance and lubricity.To further improve the friction and wear performance and high-temperature sta-bility of chromium oxide thin films,this study attempted to dope rare earth(RE)element Y(yttrium)and deposited CrYO high-temperature self-lubricating ceramic thin films with different doping levels on the surface of IN718 alloys by using multi-arc ion plating technology.The deposited films were annealed at 1000 ℃ for 2 h under atmospheric conditions to analyze the changes in phase composition and thick-ness,and the friction and wear characteristics of the CrYO films were tested using a high-temperature friction and wear tester in the temperature range of 25-600 ℃.The results show that the CrYO-2 film has a dense multilayer structure,and the multilayer oxide film produces interlayer sliding under fric-tional shear,thus providing lubrication.In particular,the friction coefficients are as low as about 0.25 in the middle and high-temperature sections(400,600 ℃),which provides good high-temperature tribolog-ical properties.In addition,the doping of Y elements dramatically affects the formation of the oxide layer and the distribution of voids in the film,changing the diffusion process of the elements of the base ma-terial inside the film and at the film-air interface at high temperatures.After two annealing treatments,the film thickness increased from 1.81 to 2.25 μm,and the volume expansion of the films was effectively controlled compared with that of the Cr2O3 films.

CrYO filmMultilayer structureHigh-temperature lubricationThermal stability

Bingsen Jia、Wenju Xu、Jingfeng Li、Xiaohong Liu、Li Ji、Chufeng Sun、Jia Li、Hongxuan Li

展开 >

State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

School of Chemical Engineering,Northwest Minzu University,Lanzhou 730030,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesYouth Innovation Promotion Association of Chinese Academy of SciencesKey Program of the Lanzhou Institute of Chemical Physics of Chinese Academy of Sciences

U21412105197556131920220160Y202084KJZLZD-3

2024

10.1016/j.jmst.2023.11.034

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.188(21)
  • 45