选用１５Ｃｒ－Ｍｏ钢，分别在３００，３５０，４００，４５０，５００℃和１８ＭＰａ下氢蚀不同时间，分析其高温高压氢中脱碳激活能和氢蚀激活能。结果表明，氢蚀脱碳激活能与氢蚀激活能接近，说明其氢蚀初期，氢蚀过程由碳的扩散速率控制．焊接热影响区的氢蚀程度大于基体．
The activation energies of decarburization and hydrogen attack of 15CrMo steel exposed under 18 MPa H2 and at 300, 350, 400, 450 and 500℃ for different time were evaluated. Both activation energies have similar value. This is believed that the hydrogen attack reaction is controlled by the diffusion of C-atom. The hydrogen attack in the welding affected zone is more obvious than that of matrix.
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