Toughening effect of mullite whisker within low-density ceramic proppants

Advanced Composites Letters

Short Communication

Pinbo Bai¹  Baolin Mu²  Yunfeng Gao²  Guomin Li²  Jianying Hao²  Yuming Tian³ 

[1] Changqing Fracturing Proppant Co. Ltd, Yangquan, China;Department of Mechanical Engineering, Institute of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China;Department of Mechanical Engineering, Institute of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China;Shanxi Engineering Vocational College, Taiyuan, China;

关键词: ceramics;    sintering;    mullite whisker;    toughening mechanism;    crack bifurcation and deflection;   

DOI  :  10.1177/2633366X19890625

 received in 2019-04-16, accepted in 2019-10-16,  发布年份 2019

来源: Sage Journals

【 摘 要 】

Main crystal phases of low-density ceramic proppants prepared by bauxite and feldspar are granular corundum and whisker-shaped mullite. Mullite whiskers are interlocked with one another and piled up inside the pores. High aspect ratio of mullite whiskers inside the pores can greatly enhance the fracture toughness. The dominant toughening mechanism for the proppants is attributed to crack bifurcation and deflection and pulling out and bridging effect of mullite whiskers.

【 授权许可】

CC BY-NC   
© The Author(s) 2019

【 图 表 】

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