摘要
Ti(C,N)基金属陶瓷因具有优异的高温硬度和耐磨性、低摩擦系数、良好的热稳定性和化学稳定性,广泛应用在高温耐磨部件、高温涂层、高速切削刀具等领域,这些恶劣的工况环境下材料易发生高温氧化,造成零件的失效。本文综述了国内外关于成分的调控及优化对金属陶瓷抗高温氧化的影响,总结了金属陶瓷的高温氧化机理,进一步对金属陶瓷材料的高温氧化膜的形成过程和氧化膜抑制持续氧化的作用进行分析,并展望了金属陶瓷高温氧化的研究发展方向:一是利用分子动力学或向量场理论对氧化过程进行分析;二是Ti(C,N)基金属陶瓷在高温磨损环境中的氧化与磨损协同作用。
Ti(C,N)-based cermets have excellent high-temperature hardness and wear resistance,low friction coefficient,good thermal stability and chemical stability.They are widely used in high-temperature wear-resistant parts,high-temperature coatings,high-speed cutting tools and other fields with severe working conditions,under which the materials are prone to hightemperature oxidation,resulting in the failure of parts.In this paper,the effects of composition regulation and optimization on high temperature oxidation resistance of cermets at home and abroad is summarized,the mechanism of high temperature oxidation of cermet is summarized,and the formation process of high temperature oxidation film of cermet and the effect of oxidation film on the inhibition of continuous oxidation are further analyzed.The research direction of high temperature oxidation of cermet is prospected:first,molecular dynamics or vector field theory is used to analyze the oxidation process.The second is the synergistic effectof oxidation and wear ofTi(C,N)ceramic in high temperature wear environment.
作者
王宗元
罗伟
王杰
黄淙
王梅
万维财
Wang Zongyuan;Luo Wei;Wang Jie;Huang Cong;Wang Mei;Wan Weicai(School of Materials Science and Engineering,Xihua University,Chengdu Sichuan 610039,China;Chengdu Siwei High-Tech Industrial Park Co.,Ltd.,Chengdu Sichuan 610039,China)
出处
《硬质合金》
CAS
2020年第4期323-329,共7页
Cemented Carbides
基金
国家自然科学基金项目《面向焊接应力调控的Ti(C,N)基金属陶瓷表面梯度层的构建与界面反应机理》(No.51901195)
四川省科技计划项目《用于高温合金加工的稀土改性PVD刀具涂层材料及制备关键技术》(No.2020YFG0175)。
关键词
Ti(C
N)基金属陶瓷
高温氧化
成分调控
氧化机理
高温磨损
Ti(C
N)-based cermets
high temperature oxidation
composition regulation
oxidation mechanism
high temperature wear
