Hydrogen outgasing from titanium-modified layers with various surface treatments
Hydrogen outgasing from titanium-modified layers with various surface treatments
复制标题
经过各种表面处理的钛改性层的氢气脱气
DOI:
10.1116/1.1392396
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
T. Homma
中科院分区:
文献类型:
--
作者:
Y. Mizuno;A. Tanaka;K. Takahiro;T. Takano;Y. Yamauchi;T. Okada;S. Yamaguchi;T. Homma
In an extremely high-vacuum (XHV) system, hydrogen outgassing is the most important factor to obtain vacuum pressure below 1.0×10−10 Pa. Titanium is an interesting material for applications in XHV construction. This work will demonstrate a clear correlation between hydrogen outgassing and surface structures of pure titanium in vacuum technology. The titanium surfaces were prepared following treatments such as chemical, electrical, buffing, and mechanochemical polishing. Characterization of oxide layers has been carried out using Auger electron spectroscopy and angle-resolved x-ray photoelectron spectroscopy, and a cross section of the modified layer has been observed by using an optical microscope. The hydrogen distribution in a surface region was measured by elastic recoil detection analysis. The oxide thicknesses were from 20 to 50 nm, although the finished titanium surfaces were covered with TiO2 for chemical polish, electrical polish, buffing polish (BP), and mechanochemical polish (MCP); also, TiO wa...