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Tough TiB 2 ‐Based Ceramic Composites Using Metallic Glass Powder as the Sintering Aid
Author(s) -
Yang Chao,
Yao Yuanpeng,
Huan Yong,
Fu Zhiqiang,
Chen Fei,
Lavernia Enrique J.
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600234
Subject(s) - materials science , sintering , spark plasma sintering , composite material , ceramic , fracture toughness , relative density , fabrication , powder metallurgy , medicine , alternative medicine , pathology
In this work, the authors report on the formation of toughened TiB 2 ‐based ceramic composites using Ti 60.8 Al 25 Nb 10 V 3 Mo 1 B 0.2 (at%) metallic glass powder as sintering aid fabricated by spark plasma sintering. The TiB 2 ceramic powder blended with 5 wt% metallic glass sintering aid exhibits an interesting sigmoidal shrinkage behavior which is argued to be attributable to the viscous flow of metallic glass powder. The fabricated TiB 2 ‐based ceramic composites have high relative density of 99.1% and high fracture toughness of 9.9 Mpa m 1/2 . The fracture toughness values obtained in this study are related to the mechanical response of the TiAl phase, which transformed from the metallic glass sintering aid. The results obtained herein provide a novel pathway for the fabrication of high‐performance ceramic composites.