目前广泛应用的形状记忆合金多为ＴｉＮｉ系，一般采用熔炼法．熔炼法生产ＴｉＮｉ合金难于得到均匀的组分，碳由坩埚混入合金中，不适于制做形状复杂的制品．粉末烧结法也可用来制取ＴｉＮｉ形状记忆合金．近年来，电火花烧结技术得到长足发展，这种方法以施加脉冲大电流加压 Currently widely used shape memory alloy mostly TiNi series, the general method of melting. TiNi alloy melting method is difficult to get uniform components, carbon from the alloy into the crucible, not suitable for the manufacture of complex shapes. Powder sintering method can also be used to prepare TiNi shape memory alloy. In recent years, the spark sintering technology has made great progress, this method to impose a large current pulse pressure