陶瓷Issue(12)：24-27,71,5.
原料粉体对95氧化铝陶瓷显微结构与强度的影响
Effect of Raw Material Powder on Microstructure and Fracture Strength of 95Al2O3 Ceramics
贺亦文 1林华泰 2方豪杰 1张晓云 1曾雄 1李明晓 1方美玲 1方归程 1刘语婧 1郭伟明2
作者信息
- 1. 湖南省美程陶瓷科技有限公司 湖南 娄底 417600
- 2. 广东工业大学机电工程学院 广州 510062
- 折叠
摘要
Abstract
Three types of Al2O3 raw material powders with typical characteristics were used to prepare 95Al2O3 ceramics.Model A powder(particle size:～1.55μm,larger particle size),Model B powder(particle size:～0.36μm,uniform parti-cle size distribution),Model C powder(particle size:～0.38μm,powder agglomeration serious).The effects of different raw powders on microstructure,grain size distribution and flexural strength of 95Al2O3 ceramics were studied.Research results show that all three powders can be sintered densely at a sintering temperature of 1 500℃.Since A powder has the largest particle size,the average grain size of the prepared 95Al2O3 ceramic is the largest(2.54μm),the abnormal grain growth is serious,and the flexural strength is the lowest(428±36 MPa).Due to the small particle sizes of B powder and C powder,the prepared 95Al2O3 ceramics have smallergrainsizes,whichare 1.26μm and 1.12μm respectively.However,C powder has serious agglomeration phenomenon,and the sintered ceramic has abnormal grain growth,resulting in its strength(527±34 MPa)being lower than the 95Al2O3 ceramic prepared from A powder(582±25 MPa).关键词
95氧化铝/粒径/晶粒尺寸/抗弯强度Key words
95Al2O3/Particle Size/Grain Size/Fracture strength分类
通用工业技术引用本文复制引用
贺亦文,林华泰,方豪杰,张晓云,曾雄,李明晓,方美玲,方归程,刘语婧,郭伟明..原料粉体对95氧化铝陶瓷显微结构与强度的影响[J].陶瓷,2024,(12):24-27,71,5.
