A phase-field study on the oxidation behavior of Ni considering heat conduction

查看全文 作　　者：Chao [1]Wang;Shigang [2]Ai;Daining [1,3]Fang

机构地区：[1]State Key Laboratory for Turbulence and Complex Systems,Peking University,Beijing 100871,China;[2]Institute of Engineering Mechanics, Beijing Jiaotong University,Beijing 100044,China;[3]Beijing Institute of Technology,Beijing 100081,China

出　　处：《Acta Mechanica Sinica》索引2016年第32卷第5期,共10页

基　　金：supported by the Beijing Jiaotong University (Grant C15JB00080) 摘　　要：Phase-field modeling approach has been used to study the oxidation behavior of pure Ni when considering heat conduction. In this calculation, the dependence of the coefficient of the Cahn–Hilliard equation Lc on the temperature T was considered. To this end, high-temperature oxidation experiments and phase-field modeling for pure Ni were performed in air under atmospheric pressure at 600,700, and 800?C. The oxidation rate was measured by thermogravimetry and Lc at these temperatures was determined via interactive algorithm. With the Lc-T relationship constructed, oxidation behavior of Ni when considering heat conduction was investigated. The influence of temperature boundaries on the oxidation degree, oxide film thickness, and specific weight gain were discussed. The phase-field modeling approach proposed in this study will give some highlights of the oxidation resistance analysis and cooling measures design of thermal protection materials. 关键词：高温度的氧化阶段地途径加热传导 Thermogravimetry 分析镍

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A phase-field study on the oxidation behavior of Ni considering heat conduction

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