Reactive spark plasma sintering of binderless WC ceramics at 1500 C

Shi Kuan Sun; Guo Jun Zhang; Wen Wen Wu; Ji Xuan Liu; Ji Zou; Tohru Suzuki; Yoshio Sakka

doi:10.1016/j.ijrmhm.2013.10.013

Reactive spark plasma sintering of binderless WC ceramics at 1500 C

Shi Kuan Sun^*, Guo Jun Zhang, Wen Wen Wu, Ji Xuan Liu, Ji Zou, Tohru Suzuki, Yoshio Sakka

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Binderless WC ceramics were prepared by reactive spark plasma sintering, using tungsten trioxide, tungsten and carbon black as the starting materials. Phase assemblages and microstructure of the as-sintered ceramics were investigated. It was found that graphite existed as an impurity phase due to the volatilization of WO₃, and W could compensate for the WO₃ loss to form WC with a single phase. Benefiting from the enhanced sinterability, WC ceramics with high relative density and good hardness could be obtained at temperature as low as 1500 C.

Original language	English
Pages (from-to)	42-45
Number of pages	4
Journal	International Journal of Refractory Metals and Hard Materials
Volume	43
DOIs	https://doi.org/10.1016/j.ijrmhm.2013.10.013
Publication status	Published - 2014
Externally published	Yes

Keywords

Binderless cemented carbides
Densification
SPS
Tungsten carbides

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.ijrmhm.2013.10.013

Cite this

@article{d5f35e4f7cc0405aa2f508fe5bc8c24a,

title = "Reactive spark plasma sintering of binderless WC ceramics at 1500 C",

abstract = "Binderless WC ceramics were prepared by reactive spark plasma sintering, using tungsten trioxide, tungsten and carbon black as the starting materials. Phase assemblages and microstructure of the as-sintered ceramics were investigated. It was found that graphite existed as an impurity phase due to the volatilization of WO3, and W could compensate for the WO3 loss to form WC with a single phase. Benefiting from the enhanced sinterability, WC ceramics with high relative density and good hardness could be obtained at temperature as low as 1500 C.",

keywords = "Binderless cemented carbides, Densification, SPS, Tungsten carbides",

author = "Sun, {Shi Kuan} and Zhang, {Guo Jun} and Wu, {Wen Wen} and Liu, {Ji Xuan} and Ji Zou and Tohru Suzuki and Yoshio Sakka",

note = "Funding Information: Financial supports from the National Natural Science Foundation of China (No. 51111140017 , No. 51002168 and No. 51002169 ), the Chinese Academy of Sciences under the Program for Recruiting Outstanding Overseas Chinese (Hundred Talents Program) , and the State Key Laboratory of High-Performance Ceramics and Superfine Microstructure are gratefully acknowledged.",

year = "2014",

doi = "10.1016/j.ijrmhm.2013.10.013",

language = "English",

volume = "43",

pages = "42--45",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0263-4368",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Reactive spark plasma sintering of binderless WC ceramics at 1500 C

AU - Sun, Shi Kuan

AU - Zhang, Guo Jun

AU - Wu, Wen Wen

AU - Liu, Ji Xuan

AU - Zou, Ji

AU - Suzuki, Tohru

AU - Sakka, Yoshio

N1 - Funding Information: Financial supports from the National Natural Science Foundation of China (No. 51111140017 , No. 51002168 and No. 51002169 ), the Chinese Academy of Sciences under the Program for Recruiting Outstanding Overseas Chinese (Hundred Talents Program) , and the State Key Laboratory of High-Performance Ceramics and Superfine Microstructure are gratefully acknowledged.

PY - 2014

Y1 - 2014

N2 - Binderless WC ceramics were prepared by reactive spark plasma sintering, using tungsten trioxide, tungsten and carbon black as the starting materials. Phase assemblages and microstructure of the as-sintered ceramics were investigated. It was found that graphite existed as an impurity phase due to the volatilization of WO3, and W could compensate for the WO3 loss to form WC with a single phase. Benefiting from the enhanced sinterability, WC ceramics with high relative density and good hardness could be obtained at temperature as low as 1500 C.

AB - Binderless WC ceramics were prepared by reactive spark plasma sintering, using tungsten trioxide, tungsten and carbon black as the starting materials. Phase assemblages and microstructure of the as-sintered ceramics were investigated. It was found that graphite existed as an impurity phase due to the volatilization of WO3, and W could compensate for the WO3 loss to form WC with a single phase. Benefiting from the enhanced sinterability, WC ceramics with high relative density and good hardness could be obtained at temperature as low as 1500 C.

KW - Binderless cemented carbides

KW - Densification

KW - SPS

KW - Tungsten carbides

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DO - 10.1016/j.ijrmhm.2013.10.013

M3 - Article

AN - SCOPUS:84888379178

SN - 0263-4368

VL - 43

SP - 42

EP - 45

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

ER -

Reactive spark plasma sintering of binderless WC ceramics at 1500 C

Abstract

Keywords

ASJC Scopus subject areas

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