Hydrogen Trapping and Desorption in a Martensitic Steel with Mixed (Ti, Mo)C Precipitates

被引：0
|
作者：
Jin, Xiaokun [1 ,2 ]
Xu, Le [1 ]
Yu, Wenchao [1 ]
Yao, Kefu [2 ]
Shi, Jie [1 ]
Wang, Maoqiu [1 ]
机构：
[1] Institute for Special Steels, Central Iron and Steel Research Institute (CISRI), Beijing,100081, China
[2] Tsinghua University, Beijing,100084, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2020年 / 49卷 / 06期
关键词：
Atmospheric exposures - Electrochemical charging - Hydrogen trapping - Thermal desorption spectrometry;
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摘要：
Hydrogen trapping and desorption in a martensitic steel with mixed (Ti, Mo)C precipitates have been investigated by thermal desorption spectrometry (TDS) analyzer. Results indicate that the spherical (Ti, Mo)C precipitates of 36~60 nm could not absorb hydrogen during electrochemical charging, while the (Ti, Mo)C precipitates of 1~5 nm are effective hydrogen trapping sites. In spite of a relatively low desorption activation energy of 16.4~22.1 kJ/mol, which is far lower than that from pure coherent TiC, the hydrogen trapped by the fine (Ti, Mo)C carbides could not desorb during atmospheric exposure. Copyright © 2020, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved.
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页码：1901 / 1906
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