KINETICS OF HYDROGEN ABSORPTION IN ALPHA-TITANIUM
KINETICS OF HYDROGEN ABSORPTION IN ALPHA-TITANIUM
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DOI：
10.1007/bf02674016
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发表时间：
1988-06-01
期刊：
影响因子：
--
通讯作者：
BUXBAUM, RE
中科院分区：
文献类型：
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作者：
BROWN, CC;BUXBAUM, RE
氢的吸收和解吸往往限制了材料的应用。对于钛，氢吸收动力学决定了它是否适合于氚储存、氚吸杂和真空泵应用。本研究探讨绝对速率理论能量表面的分子氢气遇到，因为它被吸收到α相钛。这导致在有用的新的预测氢的吸收率，解吸率，和表面覆盖钛。唯一的能量表面，这是与观察到的活化和吸收hubricies一致，而预测所有的吸收/解吸速率数据，被发现包含一个新的活化势垒。对于两种表面处理和250至500 °C之间的温度，精度在3.6倍以内。
Hydrogen absorption and desorption often limits a material’s application. For titanium, hydrogen absorption kinetics determine its suitability for tritium storage, tritium gettering, and vacuum pump applications. This study examines the absolute rate theory energy surface which molecular hydrogen gas encounters as it is absorbed into alpha-phase titanium. This results in useful new predictions for hydrogen absorption rates, desorption rates, and surface coverages on titanium. The only energy surface which is consistent with observed activation and absorption enthalpies, while predicting all absorption/desorption rate data, is found to contain a new activation barrier. Accuracy is within a factor of 3.6 for two surface preparations and temperatures between 250 and 500 °C.