High Pressure Infiltration Sintering of Coarse Grained Cemented Carbide with Low Cobalt Content

FAN Xiao-Qin; HE Duan-Wei; WANG Pei; LI Dong; LIU Yin-Juan; DU Yan-Chun

doi:10.11858/gywlxb.2017.01.002

Volume 31 Issue 1

Dec 2016

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Chinese Journal of High Pressure Physics > 2017 > 31(1): 8-14.

FAN Xiao-Qin, HE Duan-Wei, WANG Pei, LI Dong, LIU Yin-Juan, DU Yan-Chun. High Pressure Infiltration Sintering of Coarse Grained Cemented Carbide with Low Cobalt Content[J]. Chinese Journal of High Pressure Physics, 2017, 31(1): 8-14. doi: 10.11858/gywlxb.2017.01.002

Citation:

FAN Xiao-Qin, HE Duan-Wei, WANG Pei, LI Dong, LIU Yin-Juan, DU Yan-Chun. High Pressure Infiltration Sintering of Coarse Grained Cemented Carbide with Low Cobalt Content[J]. Chinese Journal of High Pressure Physics, 2017, 31(1): 8-14. doi: 10.11858/gywlxb.2017.01.002

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High Pressure Infiltration Sintering of Coarse Grained Cemented Carbide with Low Cobalt Content

doi: 10.11858/gywlxb.2017.01.002

FAN Xiao-Qin^{1, 2
,},
HE Duan-Wei^{1, 2,*
,
,},
WANG Pei^{1, 2},
LI Dong^{1, 2},
LIU Yin-Juan^{1, 2},
DU Yan-Chun^{1, 2}

1.
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
2.
Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, China

Received Date: 14 Mar 2016
Rev Recd Date: 23 May 2016

Abstract

Abstract

We investigated the high pressure infiltration sintering of coarse grained cemented carbide with low cobalt content, where WC-16%Co (mass fraction) substrate was used to provide cobalt. The initial WC powder was prepared with vacuum hydrogen reduction in order to isolate the oxygen impurity. This paper mainly studied the effects of such sintering conditions as pressure, temperature and sintering time on the properties of the sintered body, and a high hardness value was obtained by controlling the sintering process. The sintered WC-Co samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and Vickers hardness tests. The scanning electron microscopy (SEM) analysis reveals that the WC grains in well sintered alloys are round in shape and the sintered WC-Co alloy with a cobalt content of 5.7% exhibits a high hardness value of 17.4 GPa.
- infiltration sintering,
- high pressure,
- coarse grained cemented carbide with low cobalt content,
- melt cobalt,
- WC skeleton

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References(17)

References

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High Pressure Infiltration Sintering of Coarse Grained Cemented Carbide with Low Cobalt Content

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