Influence of Various Consolidation Techniques on the Green Microstructure and Sintering Behavior of Alumina Powders
Influence of Various Consolidation Techniques on the Green Microstructure and Sintering Behavior of Alumina Powders
复制标题
不同固结工艺对氧化铝粉生坯微观结构和烧结行为的影响
DOI：
10.1111/j.1151-2916.1988.tb07567.x
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发表时间：
1988
影响因子：
3.9
通讯作者：
H. Bowen
中科院分区：
文献类型：
--
作者：
A. Roosen;H. Bowen
通过干压和胶体成型技术对标准粒度分布和窄粒度分布的亚微米氧化铝粉末进行了固结。用孔径分布、生坯密度、收缩行为和烧结密度对所得生坯进行了表征。讨论了粉末特性、坯体组织和烧结行为之间的相互关系。直接从粉末悬浮液中固结的压坯和干压成型的压坯的特性有明显的区别。采用胶体成型技术的窄尺寸、分散性好的粉末，可以在低温下获得致密的微结构。
Submicrometer alumina powders, of both standard and narrow particle-size distributions, were consolidated by dry-pressing and colloidal-forming techniques. The resulting green compacts were characterized in terms of pore-size distribution, green density, shrinkage behavior, and sintered density. The interrelationships between powder characteristics, green compact microstructure, and sintering behavior are discussed. There are distinct differences between the characteristics of compacts that were directly consolidated from powder suspensions and those that were dry pressed. Dense microstructures can be achieved at low temperatures using narrow-sized, well-dispersed powders with colloidal-forming techniques.