材料与冶金学报2006，Vol.5Issue(4)：296-299,4.
离心成型方法制备Al2O3-ZrO2梯度复合材料及力学性能
Functionally graded Al2O3-ZrO2 composite prepared by centrifugal slip casting and its mechanical properties
早川 元造 1音田哲彦 2李晓东 3原小林4
作者信息
- 1. 日本鸟取大学
- 2. Graduate student, Tottori University, Koyama, Tottori, 680 - 8552, Japan
- 3. The Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China
- 4. Department of Mechanical Engineering, Tottori University, Koyama, Tottori, 680 - 8552, Japan
- 折叠
摘要
Abstract
Compositionally graded composite of alumina-20% zirconia ( volume fraction ) was fabricated by using centrifugal casting incorporated with relatively thin slip. An EPMA analysis exhibited a nearly linear variation of the alumina/zirconia ratio along the centrifugal direction; zirconia tended to accumulate in the bottom section, while alumina in the .top section. Such a graded structure exhibited a considerably higher flexural strength when the alumina rich surface was subjected to a tensile stress than compositionally uniform composite of the same average composition. Fracture toughness measurement across the specimen thickness by indentation method revealed that the crack lengths along the vertical and horizontal directions were different. The anisotropy of the fracture toughness was accounted for by the variation of the residual stress across the specimen thickness.关键词
functionally graded composite/alumina- zirconia composite/centrifugal slip casting/bending strength/fracture toughness/residual stressKey words
functionally graded composite/alumina- zirconia composite/centrifugal slip casting/bending strength/fracture toughness/residual stress分类
化学化工引用本文复制引用
早川 元造,音田哲彦,李晓东,原小林..离心成型方法制备Al2O3-ZrO2梯度复合材料及力学性能[J].材料与冶金学报,2006,5(4):296-299,4.
