ZHAO Wenxia, YANG  Yongshun, GUO Junqing

(School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003)

Abstract:The perform of polycrystal alumina short fiber was obtained by wet method and the short volume fraction of the fiber is10%. The technical parameters for short fiber preforms were designed and selected through orthogonal experiments. Theoptimal technical parameters for preparing preforms were obtained: material ratio (A) 9:1, material ratio (B) 1:10, sinteringtemperature 1050℃, soaking time 2.5h. And the microstructure of the short fiber perform was observed by SEM. The observation shows that fibers and pores were distributed uniformly.

Keywords:polycrystal alumina short fiber, prefom, heating schedule, orthogonal experiment, experiment method, aluminum matrix composites