Mechanical Alloying and Magnetic Properties of Magnetic Shape Memory Alloy Ni50Mn43Sn7

作者：Zhang Fangfang^*; Xie Zhiwei

来源：Rare Metal Materials and Engineering, 2012, 41: 663-667.

• mechanical alloying
• magnetic shape memory alloy Ni50Mn43Sn7
• magnetic properties

The Ni50Mn43Sn7 ferromagnetic shape memory alloy powder was prepared by mechanical alloying. The microstructure and magnetic properties of mechanically alloyed powders have been investigated by XRD, SEM, VSM etc. Some intermediate compounds such as Mn1.77Sn,MnSn2, Ni3Sn4, Ni3Sn2, Ni4Sn are orderly formed in the beginning process. These intermediate phases gradually disappear when the milling goes on. After milled for 270 h, the Ni2MnSn phase is obtained and the mechanical alloying is completed. The crystalline size is decreased sharply at the early stage of milling. There isn't obvious change of crystalline size with increasing of milling time. The particle agglomeration occurs obviously after 90 h of milling. The granules exist in agglomeration form in 90 h to 270 h of milling. The saturation magnetization M-s of the alloy powder increases with the increasing of milling time. The coercive force H-c first increases, and then decreases with the increasing of milling time.

• 出版日期2012-9
• 单位广东工业大学