收缩率
材料科学
烧结
复合材料
各向异性
各向同性
陶瓷
铸造
流延
量子力学
物理
作者
İ. Özgür Özer,Ender Suvacı,B. Karademir,Jean‐Michel Missiaen,C. Carry,D. Bouvard
标识
DOI:10.1111/j.1551-2916.2006.01039.x
摘要
The effect of oriented α‐Al 2 O 3 platelets on densification and shrinkage behavior of tape‐cast α‐Al 2 O 3 during solid‐state sintering was studied using dilatometric sintering shrinkage experiments and microstructural characterization. Platelet‐free alumina samples exhibit isotropic shrinkage with an ∼17% linear final shrinkage. The addition of platelets retards densification, and results in anisotropic shrinkage. Initially during sintering, shrinkage is isotropic for platelet‐containing systems; however, it becomes highly anisotropic by inhibition of shrinkage in the platelet orientation direction. In the 10 vol% platelet‐containing system, shrinkage was ∼12% in the casting and the transverse directions and ∼20% in the direction perpendicular to the casting plane.
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