National Engineering Research Center for Magnesium Alloys University 400044;
College of Materials Science and Engineering University 400044;
Key Laboratory of Advanced Technologies of Materials of Education of Material Science and Engineering Jiaotong University 610031;
Institute of Metallic Biomaterials-Zentrum Hereon-Planck-Str.1-21502 Geesthacht;
School of Mechanical Engineering University of Technology 523808;
magnesium-based composites; Al_(2)O_(3)whiskers; potential difference; DISPERSION;