无机材料学报2021，Vol.36Issue(10)：1097-1102,6.DOI:10.15541/jim20210029
Al含量对Ti2AlC在核反应堆失水事故下抗氧化性能的影响
Influence of Al Content on Oxidation Resistance of Phase-pure Ti2AlC under Simulated Loss-of-coolant Accident Conditions
摘要
Abstract
To tailor Ti2AlC coatings for the applications in accident tolerant fuels, the oxidation of near-stoichiometric and Al-lean Ti2AlC was investigated in Ar-41％ H2O atmosphere in 1000-1200 ℃. The oxidation kinetics of phase-pure Ti2AlC in high-temperature water vapor varied from parabolic to linear rate law with Al content decreasing. Insufficient Al content could not sustain the growth of continuous alumina scales, resulting in formation of thick unprotective TiO2-based scales. The formation of thin and protective Al2O3 scale for Ti2AlC with stoichiometric composition effectively inhibited the inward diffusion of water vapor. For the application of protective coatings on Zr-based cladding, stoichiometric Ti2AlC is expected to protect cladding from fast oxidation and improve the accident tolerance in the current light water reactors.关键词
事故容错燃料/Ti2AlC/高温水蒸气氧化Key words
accident tolerant fuels/Ti2AlC/water vapor high-temperature oxidation分类
化学化工引用本文复制引用
雷一明,张洁,柏广海,张晏伟,王晓辉,王京阳..Al含量对Ti2AlC在核反应堆失水事故下抗氧化性能的影响[J].无机材料学报,2021,36(10):1097-1102,6.基金项目
National Key R&D Program of China(2017YFB0703201) （2017YFB0703201）
National Natural Science Foundation of China(51772302) （51772302）
National Natural Science Foundation of China-China National Nuclear Corporation Joint Fund(U2067217) （U2067217）
Primary Research and Development Project of Suzhou(SGC201840) （SGC201840）
