硅酸盐学报2020，Vol.48Issue(3)：391-398,8.DOI:10.14062/j.issn.0454-5648.20190285
基于振荡压力烧结的氧化锆陶瓷水热老化行为
Hydrothermal Aging of Zirconia Ceramics Consolidated by Oscillatory Pressure Sintering
摘要
Abstract
The use of zirconia ceramics in humid environments is limited by the phase transformation from the tetragonal phase to the monoclinic phase. In this study, an oscillatory pressure sintering (OPS) technique was developed for the preparation of zirconia ceramics that were characterized by high density, fine grain size and excellent mechanical properties. The hydrothermal aging behaviors of the oscillatory pressure sintered and hot-pressed zirconia were investigated. The Raman analysis showed strong peaks at 178 and 189 cm-1 in both the oscillatory pressure sintered and the hot-pressed specimens, but the peak intensities of the oscillatory pressure sintered specimen were much weaker than those of the hot-pressed specimen. When the specimens were aged for 18 h, the flexural strength of the oscillatory pressure sintered zirconia reached approximately 1216 MPa, which is much higher than that of the hot-pressed zirconia. Therefore, the OPS technique is promising for the preparation of zirconia ceramics that are used in the biomedical field.关键词
振荡压力烧结/相变/抗弯强度/晶粒尺寸Key words
oscillatory pressure sintering/phase transformation/flexural strength/grain size引用本文复制引用
李双,孟兆禄,谢志鹏,魏春城,王鹏,周立娟..基于振荡压力烧结的氧化锆陶瓷水热老化行为[J].硅酸盐学报,2020,48(3):391-398,8.基金项目
辽宁科技大学开放课题(USTLGCZX201804)资助. （USTLGCZX201804）
