TY - GEN
T1 - Effects of SiO2 and ZrO2 additives on microstructure and properties of Al2O3 ceramic
AU - Li, Yihua
AU - Jia, Dechang
AU - Yang, Zhihua
AU - Zhou, Yu
PY - 2013
Y1 - 2013
N2 - Alumina ceramic, with high mechanical strength, good electric insulation, high hardness and good corrosion resistance performance, has been widely used in machinery, electronic and electrical, chemical, medicine, construction and other high-tech areas. In this study, both silicon sol and zirconia particles are incorporated into the system and dense alumina composite ceramics were prepared by cold isostatic processing and pressureless sintering at 1550 °. The influence of additives on phase composition, microstructure and mechanical properties were investigated. The XRD results show that mullite phase was generated in the composite ceramic. The composite ceramic has excellent comprehensive performance. For example, the sample with 3wt.% SiO2 and 5wt.% ZrO2 has density of 3.87g cm-3, Vickers hardness of 17.6GPa, flexural strength of 369.0MPa, young's modulus of 374.2GPa and fracture toughness of 3.57MPa m1/2.
AB - Alumina ceramic, with high mechanical strength, good electric insulation, high hardness and good corrosion resistance performance, has been widely used in machinery, electronic and electrical, chemical, medicine, construction and other high-tech areas. In this study, both silicon sol and zirconia particles are incorporated into the system and dense alumina composite ceramics were prepared by cold isostatic processing and pressureless sintering at 1550 °. The influence of additives on phase composition, microstructure and mechanical properties were investigated. The XRD results show that mullite phase was generated in the composite ceramic. The composite ceramic has excellent comprehensive performance. For example, the sample with 3wt.% SiO2 and 5wt.% ZrO2 has density of 3.87g cm-3, Vickers hardness of 17.6GPa, flexural strength of 369.0MPa, young's modulus of 374.2GPa and fracture toughness of 3.57MPa m1/2.
KW - Composite ceramic
UR - https://www.scopus.com/pages/publications/84875092347
U2 - 10.4028/www.scientific.net/MSF.745-746.523
DO - 10.4028/www.scientific.net/MSF.745-746.523
M3 - 会议稿件
AN - SCOPUS:84875092347
SN - 9783037856079
T3 - Materials Science Forum
SP - 523
EP - 527
BT - Advances in Functional and Electronic Materials
A2 - Wang, Lianjun
A2 - Wang, Xiumei
A2 - Yao, Kefu
A2 - Yan, Guo
PB - Trans Tech Publications Ltd
T2 - Chinese Materials Congress 2012, CMC 2012
Y2 - 13 July 2012 through 18 July 2012
ER -