اثرات آنتی باکتریال فلزات Antibacterial effects of metals

Antibacterial effects of metals 

اثرات آنتی باکتریال فلزات

ABSTRACT

In this chapter, the antibacterial effects of metals will be described first, and it will be compared with photocatalytic oxides and organics. Then , anti bacterial coating that have been proposed in practical industries will be introduced. The merits and demerits will be discussed, and the concept of composite materials for antibacterial effect will be proposed followed by a detail discussion. Some possibilities will be mentioned. And finally, the two concrete examples by the authors will be introduced and explained.

 

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.