THE EFFECT OF TiO2 AS ADDITIVES ON PROPERTIES OF COMPOSITE MgO FOR BONE REPAIR

Abstract

Magnesium oxide (MgO) is regarded as a biocompatible material. A composite material from
MgO oxide prepared by mixing MgO powder with TiO2 (rutile phase) (2, 5, 10)Wt.% using
powder metallurgy technique. It is used to be bioceramic material. The compressed samples
were dried and sintered at (1200) ?C. porosity measurement showed that the porosity
decreasing with increasing TiO2% . X-ray showed the presence of Mg2TiO4 in the composite
structure of MgO with (5, 10)%TiO2 samples.
The mechanical study showed an increasing in compressive strength, hardness, wear
resistance and biodegradation resistance with increasing TiO2% content in the limit of used
percentage. The prepared composite material didn’t present antibacterial activity while
previous researches showed opposite result because of using nanoscale particle size of MgO.