Study on the properties and process of fiber reinforced alumina ceramic composites

doi:10.19936/j.cnki.2096-8000.20220428.007

Abstract

Abstract: In this paper, short cut alumina fibers were dispersed uniformly in alumina ceramic slurry by ball milling, and then sprayed and granulated by dry spray molding. The influence of the amount of alumina fiber on the properties and microstructure of alumina fiber/alumina ceramic composite was investigated, and the influence of the particle size of granulating powder, the pressure in the dry pressing process and the holding time on the properties of the composite was investigated. The results show that when the fiber content is 10%, the bending strength and hardness of the material reach the maximum. Compared with the fiber content of 0%, the bending strength increases by 17.15%, the fracture toughness increases by 30.33%, but the density of the material reaches the maximum when the fiber content is 5%. In the process of dry pressing, the greater the molding pressure is, the greater the bending strength of the material is. When the holding time is 8 min, the material performance is the best. Extending the holding time does not improve the material performance.

Key words: alumina ceramics, spray granulation, dry compression molding, atmospheric pressure sintering, compound material

CLC Number:

TB332

WANG De-pan, LIANG Sen, ZHOU Yue-song, LIU Long. Study on the properties and process of fiber reinforced alumina ceramic composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(4): 45-49.

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