Enhancement of thermal stability and high-temperature oxidation resistance of chromium oxide-based films by addition of rare earth element Y
作者机构：State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China School of Chemical EngineeringNorthwest Minzu UniversityLanzhou 730030China State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China School of Chemical EngineeringNorthwest Minzu UniversityLanzhou 730030China
出 版 物：《材料科学技术（英文版）》 (Journal of Materials Science & Technology)
年 卷 期：2024年第188卷第21期
页 面：105-115页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：support of the National Natural Science Foundation of China 中央高校基本科研业务费专项资金 the Youth Innovation Promotion Association of Chinese Academy of Sciences the Key Program of the Lanzhou Institute of Chemical Physics of Chinese Academy of Sciences
主 题：CrYO film Multilayer structure High-temperature lubrication Thermal stability
摘 要：Chromium oxide ceramic materials are widely used in high-temperature applications requiring high wear resistance and *** 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 *** 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 *** 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 *** 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 *** 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.
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