ボールミルによって紛砕したTiH2紛の酸化量の測定

概要

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The oxidation amount of TiH2 powder which was pulverized from 130 μm to 3μm by dry ball-milling and was left intact in the ball-milling pot was obtained by measuring the decrease in the pressure of air in the pot as a function of time. The increase (ΔO2;%) in the oxygen content of TiH2 powder was calculated by the following equation; ΔO2??(Mv/mRT) (ΔP/760) ×100, where M is the molecular weight of oxygen, v is the volume of pot, m is the weight of TiH2 powder, R is the gas constant, T is the test temperature and ΔP is the decrease in the pressure [mmHg] of air due to oxidation in the pot. It was found that the oxidation of the TiH2 powder was not affected by the initial air pressure introduced into the pot in the range of 760-500 mmHg and it was fairly suppressed by the decreasing of test temperature and by the addition of solvents such as CH3 (CO) CH3, CCl4, CCl2F-CClF2, etc.