Center for Health Science and Engineering;
School of Materials Science and Engineering;
Hebei University of Technology;
Tianjin 300130;
China;
Institute of Metal Research;
University of Chinese Academy of Sciences;
Shenyang 110016;
China;
International Research Center for Translational Orthopaedics(IRCTO);
China;
Mixed bacterial strains; E.coli; S.aureus; 420 Cu-bearing stainless steel; Antibacterial mechanism;