DocumentCode :
1894745
Title :
Plasma sintering behavior of binderless WC powders
Author :
Kim, Hwan-Tae ; Choi, Dong-Wook ; Kim, Ji-Soon ; Kwon, Young-Soon ; Kwon, Hye-Suk ; Baek, Eung Ryul
Volume :
1
fYear :
2003
fDate :
6-6 July 2003
Firstpage :
56
Abstract :
Pure WC powders which does not include a binder phase were consolidated by spark plasma sintering (SPS) process at 1600/spl sim/1850/spl deg/C for 0/spl sim/30 min under 50 MPa. Microstructure and mechanical properties of binderless WC prepared by SPS were investigated. With increasing sintering temperature, sintered density and Vickers hardness of binderless WC increased. The fracture toughness of binderless WC was 7/spl sim/15 MPam/sup 1/2/ according to sintered density and revealed the tendency to decrease with increasing the Vickers hardness. It is found that the binderless WC prepared by SPS at 1750/spl deg/C for 10 min under 50 MPa showed nearly full densification with fine-grained structure and revealed excellent mechanical properties of high hardness (/spl sim/ HV 2400) and considerably high fracture toughness (/spl sim/ 7 MPam/sup 1/2/).
Keywords :
Vickers hardness; densification; fracture toughness; powders; sintering; tungsten; 0 to 30 min; 1600 to 1850 degC; Vickers hardness; WC; binderless tungsten carbide powders; densification; fracture toughness; sintered density; sintering temperature; spark plasma sintering;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Science and Technology, 2003. Proceedings KORUS 2003. The 7th Korea-Russia International Symposium on
Conference_Location :
Ulsan, South Korea
Print_ISBN :
89-7868-617-6
Type :
conf
Filename :
1222393
Link To Document :
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