Abstract
In this communication we describe a titanium alloy material that has an excellent low outgassing property whose rate is lower than 6×10−13 Pa m s−1. This value is much lower than that of standard vacuum materials by three orders of magnitude under the same ordinary pretreatments. In our titanium alloy a natural TiO2 thin layer on the surface acts as an enhanced diffusion channel for dissolved gases, mainly hydrogen, consequently very quick evacuation of gas near the surface gives a very low outgassing rate.
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