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SPS In-situ Synthesis of WC-Co Hardmetal by Directly Carbonization of Tungsten/Cobalt Oxide AITranslate

Beijing University of Technology Key Laboratory of New Functional Materials, Ministry of Education/School of Materials;Beijing University of Technology Key Laboratory of New Functional Materials, Ministry of Education/School of Materials;Beijing University of Technology Key Laboratory of New Functional Materials, Ministry of Education/School of Materials;Beijing University of Technology Key Laboratory of New Functional Materials, Ministry of Education/School of Materials
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

The mixed powder of WO3,Co3 O4 and carbon was in-situ synthesized to get the dense WC-Co Hardmetal by spark plasma sintering technique. The effects of the synthesis parameters and the carbon contents on the phase composition, the density and microstructure of the alloy have been studied. The results showed that the carbon can rapidly reduce the Co3O4 to Co,reduce the WO3 and directly carbonize it to WC under 970℃ ,leading to a sintering reaction with further temperature increase. With low carbon content,Co3 W9C4 and Co3 W3 C exists in the alloy as impurity. Only with appropriate carbon content,the physical composition of the alloy is WC-Co and the density of the alloy can be near the theoretical density with a grain size of about 0.5μm.

KeyWords AITranslate

in-situ synthesis SPS WC tungsten oxide Co3O4

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Basic Information:

DOI:

Chinese Library Classification Number:TG146.4[金属学及工艺—金属材料]

Citation Information:

The mixed powder of WO3,Co3 O4 and carbon was in-situ synthesized to get the dense WC-Co Hardmetal by spark plasma sintering technique. The effects of the synthesis parameters and the carbon contents on the phase composition, the density and microstructure of the alloy have been studied. The results showed that the carbon can rapidly reduce the Co3O4 to Co,reduce the WO3 and directly carbonize it to WC under 970℃ ,leading to a sintering reaction with further temperature increase. With low carbon content,Co3 W9C4 and Co3 W3 C exists in the alloy as impurity. Only with appropriate carbon content,the physical composition of the alloy is WC-Co and the density of the alloy can be near the theoretical density with a grain size of about 0.5μm.

quote

GB/T 7714-2015 [1] RAO Yan-yan, ZHANG Jiu-xing, WANG Che, et al. SPS In-situ Synthesis of WC-Co Hardmetal by Directly Carbonization of Tungsten/Cobalt Oxide[J]. Rare Metals and Cemented Carbides, 2006(1): 18-21.
MLA [1] RAO Yan-yan, et al., "SPS In-situ Synthesis of WC-Co Hardmetal by Directly Carbonization of Tungsten/Cobalt Oxide." Rare Metals and Cemented Carbides, no. 1, 2006, pp. 18-21.
APA [1] RAO Yan-yan, ZHANG Jiu-xing, WANG Che, & ZHANG Guo-zhen. (2006). SPS In-situ Synthesis of WC-Co Hardmetal by Directly Carbonization of Tungsten/Cobalt Oxide. Rare Metals and Cemented Carbides(1), 18-21.
IEEE [1] RAO Yan-yan, ZHANG Jiu-xing, WANG Che, and ZHANG Guo-zhen, "SPS In-situ Synthesis of WC-Co Hardmetal by Directly Carbonization of Tungsten/Cobalt Oxide," Rare Metals and Cemented Carbides, no. 1, pp. 18-21, 2006. keywords: {in-situ synthesis;SPS;WC;tungsten oxide;Co3O4}