Thermogravimetric study of the hydrogen uptake of the metastable β-titanium alloy Ti 38-6-44

摘要

A thermogravimetric method has been applied to study the hydrogen uptake in a metastableβ-titanium alloy. The tests were performed in H{sub}2-Ar gas mixtures with various partial pressuresof H{sub}2 at temperatures between 482℃ and 650℃. The results obtained were compared andsupplemented by means of additional volumetric tests in hydrogen at low (absolute) pressure. Basic findings like decreasing solubility of hydrogen with increasing temperature could beverified and first information on the effect of surface conditions were gained. Thus it could be shownthat despite the low atomic mass of hydrogen, thermogravimetry is an appropriate tool for theinvestigation of the hydrogen/metal interaction of titanium alloys.