School of Materials Science and Engineering Harbin Institute of Technology(Weihai) Weihai 264209 China;
School of Materials Science and Engineering Harbin Institute of Technology(Weihai) Weihai 264209 China;
School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China;
hydroxyapatite coatings; plasma spraying; processing parameters; heat treatment;