Effect Of Two Step Sintering On Microstructural And Mechanical Properties Of Alumina Zirconia Hydroxyapatite Nanocomposite |
Paper ID : 1331-UFGNSM-FULL |
Authors: |
Abstract: |
Hydroxyapatite [HAp;Ca10(PO4)6(OH)2] being chemically similar to the inorganic constituent of bone mineral and owing to its excellent biocompatibility, has been studied extensively as a bone replacement material but the use of HAp is limited to low load bearing application due to its inferior mechanical properties (especially fracture toughness) compared to bone. Hence, additions of second-phase ceramic materials to the HAp matrix to obtain products with enhanced strength and toughness has been an interesting subject matter of research in recent years. Zirconia and Alumina have been commonly used as reinforcement, because of their high strength, fracture toughness and bioinertness properties. This work reports on the effect of tow step sintering on mechanical and microstructural properties of HAp-ZrO2-Al2O3 nanocomposite. After densification, the mechanical properties, the relative proportion of TCP formed and the microstructures of the composite were observed. By used of two step sintering, highest bending strength, lowest relative proportion of TCP and nanostructure were achieved. |
Keywords: |
Two Step Sintering ,Microstructural And Mechanical Properties ,Nanocomposite,Alumina Zirconia Hydroxyapatite |
Status : Paper Accepted (Poster Presentation) |