^pof;
Advanced;
Materials;
and;
Technology,;
University;
of;
Science;
and;
Technology;
Beijing,;
Beij'ing;
100083,;
China;
^pof;
Material;
Science;
and;
Engineering,;
Chongqing;
University;
of;
Technology,;
Chongqing;
400050,;
China;
^p59;
Institute;
of;
China;
Ordnance;
Industry,;
Chongqing;
400039,;
China;