Effect of mullite seeding on microstructure of reaction-sintered mullite/zirconia multiphase ceramics

被引：0

作者：

Zhao, Shike ^{[1
]}

Huang, Yong ^{[1
]}

Wang, Chang'an ^{[1
]}

Huang, Xiaoxian ^{[2
]}

Guo, Jingkun ^{[2
]}

机构：

[1] Dept. of Mat. Sci. and Eng., Tsinghua Univ., Beijing 100084, China

[2] Shanghai Inst. of Ceramics, Chinese Acad. of Sci., Shanghai 200050, China

来源：

Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society | 2002年 / 30卷 / 05期

关键词：

Microstructure; -; Sintering; Zirconia;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Mullite-zirconia composites were prepared starting from ZrSiO4/α-Al2O3 mixtures. Effect of mullite seeding on the microstructure of the reaction-sintered composites was investigated through microstructure measurement. It is observed that Ma(d50=1.87 μm) and Mb(d50=0.83 μm) seeded samples have a relatively uniform microstructure with equiaxed and smaller mullite grains compared with those unseeded samples. Pores and ZrO2 particles are primarily intergranularly distributed. However, the content and particle size of the seeds have no obvious influences on the microstructural characteristics of the sintered compacts. Elongated mullite grains are formed when gel-derived mullite seeds (Mc) are used, which provides a promising route for producing mullite-based composites with higher toughness.

引用

页码：589 / 592