Fabrication of Protective-coated SiC Reinforced Tungsten Matrix Composites with Reduced Reaction Phases by Spark Plasma Sintering

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SiC reinforced tungsten matrix composites were fabricated via the spark plasma sintering process. In order to prevent an interfacial reaction between the SiC and tungsten during sintering, TiOx coated SiC particles were synthesized by a solution-based process. TiOx layer coated SiC particles were treated in high temperature nitriding conditions or annealed in a high temperature vacuum to form TiN or TiC coated SiC particles, respectively. The TiC layers coated on SiC particles successfully prevented tungsten from reacting with SiC; hence the proposed process resulted in successful fabrication of the SiC/W composites. The mechanical properties such as compressive strength and flexural strength of the composites were measured. Additionally, the effect of SiC on the high temperature oxidative ablation of tungsten was also investigated. The addition of SiC resulted in an improved oxidative ablation resistance of the tungsten-based composites.
Publisher
KOREAN INST METALS MATERIALS
Issue Date
2016-05
Language
English
Article Type
Article
Keywords

MECHANICAL-PROPERTIES; INTERFACIAL REACTIONS; THERMAL-CONDUCTIVITY; TIN NANOPARTICLES; YTTRIUM-OXIDE; MICROSTRUCTURE; TEMPERATURE; CARBIDE; ALLOY; ATMOSPHERE

Citation

METALS AND MATERIALS INTERNATIONAL, v.22, no.3, pp.493 - 500

ISSN
1598-9623
DOI
10.1007/s12540-016-5700-y
URI
http://hdl.handle.net/10203/209208
Appears in Collection
NE-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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