What is Alumina Al2O3 ??

Aluminium oxide is an amphoteric oxide with the chemical formula Al2O3.

** Natural alumina is renowned as sapphire or 

ruby, counting on the kinds of impurities which 

give increase to color.

Properties of aluminium oxide!!

** Aluminium oxide is to blame for the opposition 

of metallic aluminium to weathering.

** A number of alloys, such as aluminium bronzes, 

exploit this house by including a percentage of 

aluminium in the alloy to enhance corrosion 

resistance.

** Metallic aluminium is very reactive with 

atmospheric oxygen, and a slim passivation level 

of alumina

types in about 100 picoseconds on any exposed 

aluminium surface.

**Aluminium oxide is absolutely insoluble in water.

handicap:

** negligible skeletal part ingrowth

** Non-adherent fibrous membrane 

** Interfacial failure and decrease of implant can occur.