Quantitative Evaluation of (0001) Sapphire Recession in High-Temperature High-Velocity Steamjet Exposures
Quantitative Evaluation of (0001) Sapphire Recession in High-Temperature High-Velocity Steamjet Exposures
复制标题
高温高速蒸汽喷射暴露中 (0001) 蓝宝石凹陷的定量评估
DOI:
10.1016/j.jeurceramsoc.2021.07.064
复制
发表时间:
2021
影响因子:
5.7
通讯作者:
Opila, Elizabeth J.
中科院分区:
文献类型:
--
作者:
Ridley, Mackenzie J.;Opila, Elizabeth J.
High-temperature high-velocity steam exposures of (0001) sapphire coupons were performed at temperatures of 1200 °C–1450 °C to determine the quantitative capability of the steamjet apparatus. Recession results were compared to calculated values of Al(OH)3(g) mass transfer rates based on laminar flow models and available thermodynamic data for Al(OH)3(g). Linear material volatilization rates and a strong gas velocity dependence on the reaction depth confirmed that the Al2O3reaction was controlled by a gas-phase diffusion process. The temperature dependence for the steam reaction agreed with thermodynamic calculations and with the literature, confirming that Al(OH)3(g) transport through a gas boundary layer represents the rate-limiting step for Al2O3volatilization in steam. The steamjet experimental setup can thus be utilized for determination of steam-oxide reaction thermodynamics given known steam flow conditions. Steamjet test recession results for simple oxides are discussed for comparison with behavior of complex oxides that form porous product layers, which are not yet well understood.
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DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
M. Ridley;E. Opila
通讯作者:
E. Opila
DOI:
10.1016/j.jeurceramsoc.2015.11.016
发表时间:
2016-04-01
影响因子:
5.7
作者:
Golden, Robert A.;Opila, Elizabeth J.
通讯作者:
Opila, Elizabeth J.
影响因子:
1.7
作者:
Xian;Lai;Yiguang Wang;Litong Zhang;Zhiliang Hong;Yahui Wu
通讯作者:
Yahui Wu
DOI:
10.4028/www.scientific.net/kem.287.367
发表时间:
2005
期刊:
Key Engineering Materials
影响因子:
--
作者:
M. Ferber;Hua
通讯作者:
Hua