Structure and Magnetic Properties of Sm2Fe17Nx Sintering Magnets Prepared by Spark Plasma Sintering
来源期刊：Journal of Rare Earths2006年第S1期
论文作者：张东涛 岳明 张久兴
文章页码：325 - 328
摘 要：<正>Bulk Sm2Fe17Nx sintering magnet was fabricated by spark plasma sintering（SPS） technique. The effects of sintering pressure and sintering temperature on the magnetic properties of the Sm2Fe17Nx magnet were investigated. As a result, the density of the magnet is obviously improved with the increase of sintering pressure, but the coercivity drops since Sm2Fe17Nx has decomposed into SmN,α-Fe and N2. When sintering temperature was only above 200℃under 1 GPa sintering pressure, the coercivity even begins to decrease, which indicates that high pressure promotes the decomposition of the Sm2Fe17Nx at lower temperature. The decomposition is also proved by the decrease of nitrogen and increase ofα-Fe in the magnets.
张东涛，岳明，张久兴
摘 要：<正>Bulk Sm2Fe17Nx sintering magnet was fabricated by spark plasma sintering（SPS） technique. The effects of sintering pressure and sintering temperature on the magnetic properties of the Sm2Fe17Nx magnet were investigated. As a result, the density of the magnet is obviously improved with the increase of sintering pressure, but the coercivity drops since Sm2Fe17Nx has decomposed into SmN,α-Fe and N2. When sintering temperature was only above 200℃under 1 GPa sintering pressure, the coercivity even begins to decrease, which indicates that high pressure promotes the decomposition of the Sm2Fe17Nx at lower temperature. The decomposition is also proved by the decrease of nitrogen and increase ofα-Fe in the magnets.
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