研究論文
振動型ボールミルによるMM-SPSプロセスで作製した純マグネシウムの諸特性
2022 年 72 巻 4 号 p. 127-132
詳細
2022 年 72 巻 4 号 p. 127-132
Pure magnesium powders together with different amounts of process control agent (PCA) were mechanically milled using a vibration ball mill, which provide higher energy to the powder than a planetary ball mill. Obtained powders were consolidated into bulk materials by the spark plasma sintering (SPS). Changes in hardness and solid-state reactions of the MMed pure magnesium powders and the bulk materials have been examined by hardness measurements and an X-ray diffraction. The Vickers hardness of the pure magnesium powders increased to 65 HV after MM 2 h with 0.30 g of PCA. The Vickers hardness of the bulk materials fabricated from MM 4 h pure magnesium powders with 0.40 g of PCA increased to 60 HV. Those hardness values were higher than that of using planetary ball mill. Vibration ball mill was attributable to increase the hardness of MMed powders and bulk materials due to minimized crystallite size in a short MM time together with formation of compounds.
