Shrinkage of Large Isolated Pores during Hot Isostatic Pressing of Presintered Alumina Ceramics
Shrinkage of Large Isolated Pores during Hot Isostatic Pressing of Presintered Alumina Ceramics
复制标题
预烧氧化铝陶瓷热等静压过程中大孤立孔的收缩
DOI：
10.1111/j.1151-2916.1995.tb08697.x
复制
发表时间：
1995
影响因子：
3.9
通讯作者：
Seong
中科院分区：
文献类型：
--
作者：
Kyung;Doh;Seong
研究了预烧Al{sub2}O{sub3}和Al{sub2}O{sub3}-ZrO{sub2}陶瓷热等静压(HIP)过程中大气孔的收缩过程。晶界滑动导致大气孔坍塌，流动颗粒错配导致的小气孔消失，主要是扩散。由于Al{sub2}O{sub3}-ZrO{sub2}陶瓷具有较高的抗晶界滑移能力，气孔很难消除。
The shrinkage process of large pores during hot isostatic pressing (HIP) of presintered Al{sub 2}O{sub 3} and Al{sub 2}O{sub 3}-ZrO{sub 2} ceramics has been investigated. Large pores were observed to collapse by grain-boundary sliding, and then small pores resulting from the misfit of flowed grains disappeared, mainly by diffusion. Due to the high resistance to grain-boundary sliding, the pores in the Al{sub 2}O{sub 3}-ZrO{sub 2} ceramics were hard to eliminate.