水素中熱処理したSm₂Fe₁₇N_x合金の相変化と磁気特性

抄録

This paper describes the use of hydrogen in the processing of Sm₂Fe₁₇N_x powders with good coercivity. The hydrogen absorption and desorption behavior of Sm₂Fe₁₇ compound were studied. The green compacts of Sm₂Fe₁₇ compound were heattreated in hydrogen at around 600∼1000°C, in decomposing into α-Fe and samarium hydrides. They underwent further dehydrogenation by alternating the heating atmosphere into a vacuum, resulting in the reforming Sm₂Fe₁₇ phase.