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

被引：7
作者：
Wang, Chao [1 ]
Ai, Shigang [2 ]
Fang, Daining [1 ,3 ]
机构：
[1] Peking Univ, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
[2] Beijing Jiaotong Univ, Inst Engn Mech, Beijing 100044, Peoples R China
[3] Beijing Inst Technol, Beijing 100081, Peoples R China
来源：
ACTA MECHANICA SINICA | 2016年 / 32卷 / 05期
关键词：
High-temperature oxidation; Phase-field approach; Heat conduction; Thermogravimetry analysis; Nickel; HIGH-TEMPERATURE OXIDATION; SCALE/METAL SUBSTRATE SYSTEM; RESIDUAL-STRESS ANALYSIS; GROWTH STRAIN; PURE NICKEL; CREEP DEFORMATION; DIFFUSION; SIMULATION; COATINGS; ALLOY;
D O I：
10.1007/s10409-016-0593-z
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
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 . The oxidation rate was measured by thermogravimetry and Lc at these temperatures was determined via interactive algorithm. With the Lc 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.
引用
收藏
页码：881 / 890
页数：10
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