Interface Structure between Ti-Based Bulk Metallic Glasses and Hydroxyapatite Ceramics Jointed by Hydrothermal Techniques

exhibit high hardness, high tensile strength, and good fracture toughness. The unique properties of bulk glassy alloys make them extremely attractive for biomedical applications. The mechanical deformation behavior of biological materials, which is characterized by a high recovery of strain (above 2%) after deformation, is very different from that of common metallic materials. 4) Another problem concerning metallic implants in orthopedic surgery is the mismatch of Young’s modulus between a human bone and metallic implants. The bone is insufficiently loaded due to a mismatch called stressshielding. From the viewpoint of the requirements toward implant materials for hard tissue replacement, a biomaterial with low elastic modulus is required. Glassy alloys have lower Young’s modulus and an extremely high elastic limit of 2%. Since bulk glassy alloys have a unique ability to flex elastically with the natural bending of bone, they distribute stresses more uniformly. Faster healing rates will result from reduced stress shielding effects while minimizing stress concentrators.