کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044089 | 1518916 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen adsorption characteristics of Zr57V36Fe7 non-evaporable getters at low operating temperatures
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
Non-evaporable getter is commonly used to remove active gases in vacuum chambers, especially H2 at ambient temperature. In this work, the getter was applied to low operating temperatures where a vacuum chamber is cooled to a temperature of 100â¯K, and maintained under a pressure of approximately 1â¯Ãâ¯10â3â¯Pa, in which the residual gas is mainly hydrogen. The test temperatures ranged from 100â¯K to 293â¯K. Using constant volume method, the hydrogen sorption capacity of Zr57V36Fe7 at different temperatures and equilibrium pressures are determined. In addition, the corresponding adsorption isotherms of the getter from 10â4â¯Pa to 10â¯Pa are obtained. In contrast with its properties at ambient temperature, Zr57V36Fe7 displays a lower hydrogen adsorption rate but a higher hydrogen sorption capacity at low temperature conditions. From that, it is reasonable to recommend the use of Zr57V36Fe7 for hydrogen degassing of vacuum chambers at low temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 154, August 2018, Pages 6-10
Journal: Vacuum - Volume 154, August 2018, Pages 6-10
نویسندگان
Tianyou Feng, Yongjun Cheng, Lian Chen, Zhenhua Xi, Jianbing Zhu, Yali Li,