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Effect of Cr 3 C 2 on Valence‐Electron Structure and Plasticity of Rim Phase in Ti(C,N)‐Based Cermets
Author(s) -
Zheng Yong,
You Min,
Xiong Weihao,
Liu Wenjun,
Wang Shengxiang
Publication year - 2004
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2004.00460.x
Subject(s) - cermet , plasticity , materials science , valence electron , dissolution , chromium , phase (matter) , covalent bond , crystallography , metallurgy , electron , composite material , chemistry , physics , ceramic , organic chemistry , quantum mechanics
Based on the empirical electron theory of solids and molecules, the valence‐electron structure (VES) of the rim phase in Ti(C,N)‐based cermets was calculated, and the relationship between the VES and plasticity was determined. The results indicated that the plasticity of the rim phase in a Ti(C,N)‐based cermet could be defined using the sum of the n a values for the covalent bonds, and that chromium dissolution in the rim phase improved the plasticity of the rim phase. Moreover, a series of experiments showed that adding Cr 2 C 3 to a typical Ti(C,N)‐based cermet strengthened the interface. Based on those results, a Ti(C,N)‐based cermet with added Cr 3 C 2 was manufactured; the new cermet had more than twice the transverse rupture strength of a typical cermet.