Forced SHS Compaction of TiC-NiTi Composites

被引：0

作者：

Bogatov, Yu. V. ^{[1
]}

Shcherbakov, V. A. ^{[1
]}

Kovalev, D. Yu. ^{[1
]}

机构：

[1] Russian Acad Sci, Merzhanov Inst Struct Macrokinet & Mat Sci, Chernogolovka 142432, Russia

来源：

INTERNATIONAL JOURNAL OF SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS | 2023年 / 32卷 / 03期

关键词：

forced SHS compaction; burning velocity; combustion temperature; TiB2 based metal ceramics; phase composition; microhardness; CERMETS;

D O I：

10.3103/S1061386223030044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiC-NiTi cermet composites were fabricated by forced SHS compaction from (Ti + C + Ni) mixtures with varying content of Ni + Ti from 28 to 90 wt %. The phase composition and microstructure were characterized by X-ray diffraction method, scanning electron microscopy, and energy dispersive spectroscopy. The microstructure of composites was shown to contain spherical TiC particles surrounded by the matrix including TiNi3, TiNi(B2), Ti2Ni, and Ti3Ni4 phases. As Ni + Ti content was increased, there was a change in the stoichiometry of TiC (from TiC1 to TiC0.43) and its particle size (from 6.5 to 0.2 mu m). It was found that the microhardness of TiC-NiTi composites dropped markedly from 23.5 to 6.4 GPa.

引用

页码：242 / 246

页数：5

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