Key;
Laboratory;
of;
Traction;
Power,;
Southwest;
Jiaotong;
University,;
Chengdu;
610031,;
China;
Railway;
Construction;
Heavy;
Industry;
Co.;
Ltd.,;
Zhuzhou;
412005,;
China;
Railway;
Longchang;
Materials;
Co.;
Ltd.,;
Longchang;
642150,;
China;