A Comparative Assessment of Hydrogen Embrittlement: Palladium and Palladium-Silver (25 Weight% Silver) Subjected to Hydrogen Absorption/Desorption Cycling
A Comparative Assessment of Hydrogen Embrittlement: Palladium and Palladium-Silver (25 Weight% Silver) Subjected to Hydrogen Absorption/Desorption Cycling
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A%20比较%20评估%20的%20氢%20脆化：%20钯%20和%20钯银%20（25%20重量%%20银）%20受制%20至%20氢%20吸收/解吸%20循环
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
A. Craft
中科院分区：
文献类型：
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作者：
Gilberto Jimenez;E. Dillon;Joseph Dahlmeyer;Travis Garrison;Tyler D. Garrison;Sedna Darkey;Kyle Wald;Joseph Kubik;D. Paciulli;Mustakim Talukder;J. Nott;Maria Ferrer;Joseph Prinke;P. Villaneuva;F. Massicotte;K. Rebeiz;S. Nesbit;A. Craft
通过测定暴露于氢的两种金属系统的机械性能，研究了氢脆对金属系统的负面影响。我们评估了氢吸收/解吸循环对纯钯和钯银合金（25 重量％银）的拉伸强度、延展性和显微硬度的影响。研究重点的变量是金属吸收的氢量、氘同位素效应、氢吸收/解吸循环次数以及氢暴露温度。在所有研究条件下，纯钯的机械性能由于接触氢而显着改变，并发生显着的氢脆。相比之下，钯银合金的机械性能由于暴露于氢而几乎没有变化，包括几乎没有发生氢脆。
The negative effects of hydrogen embrittlement on metallic systems have been investigated through determination of the mechanical properties of two metallic systems that were exposed to hydrogen. An assessment of the effects of hydrogen absorption/desorption cycling on the tensile strength, ductility, and microhardness of pure palladium and the alloy palladium-silver (25 weight% silver) has been undertaken. The variables that are the focus of the study are the amount of hydrogen absorbed by the metal, deuterium isotope effect, number of hydrogen absorption/desorption cycles, and the hydrogen exposure temperature. Under all conditions studied, the mechanical properties of pure palladium were significantly altered as a result of hydrogen exposure, with significant hydrogen embrittlement occurring. In contrast, the mechanical properties of the palladium-silver alloy showed little alteration as a result of hydrogen exposure, including virtually no occurrence of hydrogen embrittlement.