1. Shanghai Key Laboratory of Advanced Hightemperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
Nanoporous metals have been widely used in many fields containing catalysis and energy owing to their unique structural characteristics. In medical implant field, the biomimetic materials with bicontinuous porous structure at the micro/nanoscale have attracted much attention, but the traditional forming methods are hard to achieve this structure. In recent years, due to the excellent performance and similarity with the porous structure in human bones, nanoporous metals have been introduced into the implant to obtain new metallic implant materials. Previous studies have found that metallic implant materials with nanoporous structure exhibit relatively good performance in mechanics and biology, and have great application potential in the field of implantation. In this work, the research status of the nanoporous metals prepared by dealloying techniques for implantation application is systematically reviewed. Firstly, the common metallic implant materials are introduced, then the basic preparation techniques and specific application forms of nanoporous metallic implant materials prepared by the dealloying method are emphatically described, and finally, their development prospects is discussed as well.