TY - JOUR AV - none N1 - cited By 6 SP - 64 TI - Processing and characterisation of Al2O3-SiO 2-ZrO2 composite material PB - Inderscience Publishers SN - 17418410 EP - 76 N2 - An oxide ceramic based composite of Al2O3-SiO 2-ZrO2 (ASZ) system was developed and investigated using a pressureless sintering route. The effect of compositions of each component on the microstructure, density, and hardness properties were studied. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to investigate the phase composition of ASZ composite system. The results showed that with varying ZrO2 content, keeping the silica content constant and the alumina as a matrix, the densification tends to decrease as the content of zirconia increases starting from 10 wt. of the composition. XRD peaks suggested a fully developed alumina, mullite and zirconia phases formed by the solid and liquid phase reaction sintering. The experimental results reveal also the hardness value was in the range of 10-12.5 GPa, the highest value for a composition of 80wt. Al2O3-10wt. SiO2-10wt. ZrO2. Copyright © 2012 Inderscience Enterprises Ltd. IS - 1 ID - scholars3198 KW - Alumina; Aluminum oxide; Composite materials; Hardness; Microstructure; Mullite; Scanning electron microscopy; Silica; Sintered alumina; Sintering; X ray diffraction KW - Hardness values; Liquid-phase reaction; Oxide ceramics; Pressure-less sintering; Silica content; XRD peaks KW - Zirconia Y1 - 2012/// JF - International Journal of Microstructure and Materials Properties A1 - Asmelash, G.M. A1 - Mamat, O. UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84858635371&doi=10.1504%2fIJMMP.2012.045803&partnerID=40&md5=3559c036b2210e1cc30e955a1ea4621a VL - 7 ER -