複合材料、塑性加工
MA–SPSプロセスで作製したフェライト粒子分散強化65/35黄銅基複合材料の特性
キーワード:
mechanical alloying,
spark plasma sintering,
composite material Cu–35Zn,
hardness,
magnetic properties
2020 年 59 巻 1 号 p. 204-208
詳細
2020 年 59 巻 1 号 p. 204-208
Pure copper powder and pure zinc powder together with ferrite （FR） powder were mechanically alloyed （MAed） using a vibration type of ball mill, and obtained MAed powders were consolidated into bulk materials by spark plasma sintering （SPS）. Effects of sintering temperatures on hardness and electrical conductivity of bulk SPS materials were investigated by hardness and electrical conductivity measurements, respectively. The constitute phase for the SPS materials was identified by X–ray diffraction. In addition, magnetic properties of the SPS materials were evaluated. The optimal sintering temperature was 973 K in terms of hardness value in the SPS materials. The maximum value of Vickers hardness was over 500 HV for the Cu–35 Zn with 50 mass% FR composite material at the sintering temperature of 973 K. The SPS materials exhibited to attach the permanent magnetic. The combination of MA–SPS process can be beneficial for fabricating bulk materials from composite powders produced by mechanical alloying process.
