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Microstructure and mechanical properties of TiN‐based cermet reinforced by Cr 3 C 2 addition
Author(s) -
Wu Yuxue,
Xiong Huiwen,
Gan Xueping,
Li Zhiyou,
Zhou Kechao
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13098
Subject(s) - cermet , materials science , microstructure , tin , fracture toughness , sintering , metallurgy , toughness , flexural strength , composite material , ceramic
TiN‐based cermets with different Cr 3 C 2 addition were prepared by conventional vacuum sintering. Effect of Cr 3 C 2 on microstructure and properties of TiN‐based cermets were discussed. Owing to the formation of sound rims on TiN cores, ultrafine TiN‐based cermets with more uniform microstructure and finer grains were obtained with 1 wt% Cr 3 C 2 . When the added Cr 3 C 2 content enhanced from 0 to 2 wt%, the transverse rupture strength ( TRS ) and fracture toughness increased firstly and then decreased, while the hardness increased monotonically. For the experimental conditions considered, the cermet with 1 wt% Cr 3 C 2 addition had optimal combination of hardness (91HRA), fracture toughness (14.7 MPa m 1/2 ) and TRS (2123 MPa).