摘要
在氢气气氛下,尝试采用两步法无压烧结技术制备了致密且晶粒尺寸较小的Al2O3半透明陶瓷。结果表明:第一步烧结温度T1和第二部烧结温度T2的范围分别为1 650～1 750℃和1 600～1 650℃;在T1,T2分别为1 750,1 650℃烧结试样的力学性能较一步烧结的有了大幅提高,其光学性能达到了灯管的要求。
The translucent alumina ceramic with high density and fine grain size was fabricated by a two-step pressureless sintering process in a bydrogenolysis gas atmosphere. The results show that the first-step sintering temperature（T1 ） was 1 650--1 750℃ and the second-step sintering temperature（T2 ） was 1 600--1 650℃. The mechanical properties of the sample prepared by two-step pressureless sintering （T1 = 1 750 ℃, T2 = 1 650 ℃） were far more improvement than that of the sample prepared by one-step sintering, and its opitical properties met the general requirements of the lamp.
出处
《机械工程材料》
CAS
CSCD
北大核心
2013年第1期68-70,76,共4页
Materials For Mechanical Engineering
关键词
Al2O3半透明陶瓷
两步法无压烧结
力学性能
translucent alumina ceramic
two-step pressureless sintering
l mechanical property
