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Fabrication and mechanical properties of self-toughening ZrB2-SiC composites from in-situ reaction
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Indexed by:Journal Papers

Date of Publication:2019-12-01

Journal:JOURNAL OF ADVANCED CERAMICS

Included Journals:SCIE

Volume:8

Issue:4

Page Number:527-536

ISSN No.:2226-4108

Key Words:ultrahigh temperature ceramic; in-situ reaction; interlocking microstructure; mechanical property

Abstract:Self-toughening ZrB2-SiC based composites are fabricated by in-situ reactive hot pressing. The effect of sintering additive content on the microstructure and mechanical properties of the composites is investigated. Microstructure observation found that the in-situ reactive hot pressing could promote the anisotropic growth of ZrB2 grains and the formation of interlocking microstructure. Such microstructure could improve the mechanical properties, especially, for the fracture toughness. The improved mechanical properties could be attributed to the self-toughening structure related to the ZrB2 platelets and the formed interlocking microstructure, which could trigger various toughening mechanisms such as grain pull-out, crack bridging, crack deflection, and crack branching, providing the main contribution to the high fracture toughness.

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Associate Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Gender:Male

Alma Mater:大连理工大学

Degree:Doctoral Degree

School/Department:材料科学与工程学院

Discipline:Manufacturing Engineering of Aerospace Vehicle. Materials Processing Engineering. Flight Vehicle Design

Business Address:综合实验1号楼 414B

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