مواد ایمپلنت سرامیکی Ceramic Implant Materials

Ceramic Implant Materials

مواد ایمپلنت سرامیکی

ABSTRACT

Ceramics are refractory, polycrystalline compounds, usually inorganic, including silicates, metallic oxides, carbides, and various refractory hydrides, sulfides, and selenides. Oxides such as Al2O3, MgO, SiO2, etc. contain metallic and nonmetallic elements. Ionic salts (NaCl, CsCl, ZnS, etc.) can form polycrystalline aggregates, but soluble salts are not suitable for structural biomaterials. Diamond and carbonaceous structures like graphite and pyrolized carbons are  covalently bonded. The important factors influencing the structure and property relationship of  the ceramic materials are radius ratios (§2.2.2) and the relative electronegativity between posi- tive and negative ions.