Hydrogen Solubility and Diffusion in Austenitic Stainless Steels Studied with Thermal Desorption Spectroscopy
Hydrogen Solubility and Diffusion in Austenitic Stainless Steels Studied with Thermal Desorption Spectroscopy
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DOI：
10.1002/srin.201000227
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发表时间：
2011-01-01
影响因子：
2.2
通讯作者：
Hanninen, H.
中科院分区：
文献类型：
--
作者：
Yagodzinskyy, Y.;Todoshchenko, O.;Hanninen, H.
采用热脱附谱（TDS）研究了氢在AISI 310、AISI 301 LN和AISI 201奥氏体不锈钢中的溶解和扩散。所有研究的钢的氢解吸的温度依赖性表现出一个复杂的主峰所造成的氢释放从钢晶格扩散。取决于钢和加热速率，峰位于350至500 K，其形状反映了不锈钢中氢扩散的特性，不锈钢是多组分合金。TDS曲线的分析是基于氢扩散模型，考虑到在钢晶格中的能量深间隙位置中的氢原子的捕获。根据TDS曲线获得了相同充氢程序后氢的扩散系数及其总含量，并对所研究的钢进行了比较。
Hydrogen solubility and diffusion in austenitic stainless steels, namely AISI 310, AISI 301LN and AISI 201, are studied with thermal desorption spectroscopy (TDS) after electrochemical potentiostatic hydrogen pre-charging. Temperature dependencies of hydrogen desorption for all studied steels manifest a complex main peak caused by hydrogen releasing from the steel lattice by diffusion. Depending on the steel and heating rate the peak is situated from 350 to 500 K and its shape reflects a specific of hydrogen diffusion in stainless steels, which are multicomponent alloys. Analysis of the TDS curves is based on the hydrogen diffusion model taking into account trapping of hydrogen atoms in the energetically deep interstitial positions in the steel crystal lattice. Diffusion coefficient of hydrogen and its total content after the same charging procedure are obtained from the TDS curves and compared for the studied steels.