人工晶体学报2012，Vol.41Issue(4)：1025-1029,5.
烧结工艺对原位合成ZrO2/TiB2复合陶瓷材料的力学性能影响
Influence of Sintering Process on Mechanical Properties of ZrO2/TiB2 Composite by In-Situ Synthesis
摘要
Abstract
TiB2 was fabricated using TiC and B4C as raw materials, ZrO2/TiB2 composite ceramic materials which content of TiB2 20wt% was fabricated by in-situ synthesis. Influence of sintering process on mechanical properties including temperature, holding time and pressure has been studied. The results show that the bending strength of the composite ceramic materials is improved from 820 MPa to 980 MPa, and its fracture toughness is improved from 7.2 MPa o m1/2 to 9.4 MPa o m1/2 when temperature raised from 1650℃ to 1750℃, the bending strength and its fracture toughness are decreased when temperature raised to 1850 X.. Microhardness is improved when temperature raised. Its fracture toughness is improved from 8.6 MPa o m1/2 to 9.4 MPa o m1/2 when holding time increased from 30 min to 45 min at sintering temperature 1750 ℃. and pressure 30 MPa, but the fracture toughness is decreased when holding time increased to 60 min, and the holding time has little more influence on bending strength and microhardness. The experimental results show that bending strength, microhardness, fracture toughness of ZrO2/TiB2 composite is 980 MPa, 13. 6 GPa, 9. 4 MPa o m1/2 respectively under the optimum sintering condition including temperature of 1750℃, holding time of 45min and pressure of 30 MPa.关键词
ZrO2/TiB2复合陶瓷/原位合成/烧结工艺/力学性能Key words
ZrO2/TiB2 composites/ in-situ synthesis/ sintering process/ mechanical properties分类
化学化工引用本文复制引用
潘培道,刘孝光,殷韦韦,王长春..烧结工艺对原位合成ZrO2/TiB2复合陶瓷材料的力学性能影响[J].人工晶体学报,2012,41(4):1025-1029,5.基金项目
安徽省科技计划资助项目(10020203045) （10020203045）
安徽省高校自然科学研究资助项目(kj2010B132) （kj2010B132）
