Thermodynamic stability and mechanical evaluation of YSZ-WC composite ceramics fabricated by pressureless sintering and hot pressing

Jae Hyeong Choi; Min Soo Nam; Sung Soo Ryu; In Ho Jung; Sahn Nahm; Seongwon Kim

doi:10.1016/j.ceramint.2022.12.216

Thermodynamic stability and mechanical evaluation of YSZ-WC composite ceramics fabricated by pressureless sintering and hot pressing

Jae Hyeong Choi, Min Soo Nam, Sung Soo Ryu, In Ho Jung, Sahn Nahm, Seongwon Kim

Department of Materials Science and Engineering

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

Abstract

Yttria-stabilized zirconia (YSZ)-based engineering ceramics are manufactured by adding non-oxide additives as the typical toughening mechanism of zirconia (ZrO₂). In this study, YSZ-10/20 vol% WC composite ceramics were prepared by pressureless sintering and hot pressing to view reaction pathways based on different driving forces. During the reactions, the decarburization of WC and the formation of ZrC were investigated at temperatures of ≥1500 °C. W was detected at 1700 °C, which is related to the thermodynamic stability of various chemical reactions in the ZrO₂-WC binary system. The hardness of the composite ceramics decreased, whereas the fracture toughness and wear resistance increased. The phase evaluation and reaction pathways from the thermodynamic perspective derived from the YSZ-WC binary system suggest considerable potential for the future composition designs of ZrO₂-based non-oxide composite ceramics.

Original language	English
Pages (from-to)	13414-13424
Number of pages	11
Journal	Ceramics International
Volume	49
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2022.12.216
Publication status	Published - 2023 May 1

Keywords

Crystalline phase
Mechanical property
Sintering
Thermodynamic stability
YSZ-WC

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2022.12.216

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title = "Thermodynamic stability and mechanical evaluation of YSZ-WC composite ceramics fabricated by pressureless sintering and hot pressing",

abstract = "Yttria-stabilized zirconia (YSZ)-based engineering ceramics are manufactured by adding non-oxide additives as the typical toughening mechanism of zirconia (ZrO2). In this study, YSZ-10/20 vol% WC composite ceramics were prepared by pressureless sintering and hot pressing to view reaction pathways based on different driving forces. During the reactions, the decarburization of WC and the formation of ZrC were investigated at temperatures of ≥1500 °C. W was detected at 1700 °C, which is related to the thermodynamic stability of various chemical reactions in the ZrO2-WC binary system. The hardness of the composite ceramics decreased, whereas the fracture toughness and wear resistance increased. The phase evaluation and reaction pathways from the thermodynamic perspective derived from the YSZ-WC binary system suggest considerable potential for the future composition designs of ZrO2-based non-oxide composite ceramics.",

keywords = "Crystalline phase, Mechanical property, Sintering, Thermodynamic stability, YSZ-WC",

author = "Choi, {Jae Hyeong} and Nam, {Min Soo} and Ryu, {Sung Soo} and Jung, {In Ho} and Sahn Nahm and Seongwon Kim",

note = "Funding Information: This study was supported by the Technology Innovation Program [grant number 20011007 ; Development of highly tough ceramic parts of 30 μm bead mill system] funded by the Ministry of Trade, Industry and Energy (MOTIE, Korea). Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd and Techna Group S.r.l.",

year = "2023",

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doi = "10.1016/j.ceramint.2022.12.216",

language = "English",

volume = "49",

pages = "13414--13424",

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T1 - Thermodynamic stability and mechanical evaluation of YSZ-WC composite ceramics fabricated by pressureless sintering and hot pressing

AU - Choi, Jae Hyeong

AU - Nam, Min Soo

AU - Ryu, Sung Soo

AU - Jung, In Ho

AU - Nahm, Sahn

AU - Kim, Seongwon

N1 - Funding Information: This study was supported by the Technology Innovation Program [grant number 20011007 ; Development of highly tough ceramic parts of 30 μm bead mill system] funded by the Ministry of Trade, Industry and Energy (MOTIE, Korea). Publisher Copyright: © 2023 Elsevier Ltd and Techna Group S.r.l.

PY - 2023/5/1

Y1 - 2023/5/1

N2 - Yttria-stabilized zirconia (YSZ)-based engineering ceramics are manufactured by adding non-oxide additives as the typical toughening mechanism of zirconia (ZrO2). In this study, YSZ-10/20 vol% WC composite ceramics were prepared by pressureless sintering and hot pressing to view reaction pathways based on different driving forces. During the reactions, the decarburization of WC and the formation of ZrC were investigated at temperatures of ≥1500 °C. W was detected at 1700 °C, which is related to the thermodynamic stability of various chemical reactions in the ZrO2-WC binary system. The hardness of the composite ceramics decreased, whereas the fracture toughness and wear resistance increased. The phase evaluation and reaction pathways from the thermodynamic perspective derived from the YSZ-WC binary system suggest considerable potential for the future composition designs of ZrO2-based non-oxide composite ceramics.

AB - Yttria-stabilized zirconia (YSZ)-based engineering ceramics are manufactured by adding non-oxide additives as the typical toughening mechanism of zirconia (ZrO2). In this study, YSZ-10/20 vol% WC composite ceramics were prepared by pressureless sintering and hot pressing to view reaction pathways based on different driving forces. During the reactions, the decarburization of WC and the formation of ZrC were investigated at temperatures of ≥1500 °C. W was detected at 1700 °C, which is related to the thermodynamic stability of various chemical reactions in the ZrO2-WC binary system. The hardness of the composite ceramics decreased, whereas the fracture toughness and wear resistance increased. The phase evaluation and reaction pathways from the thermodynamic perspective derived from the YSZ-WC binary system suggest considerable potential for the future composition designs of ZrO2-based non-oxide composite ceramics.

KW - Crystalline phase

KW - Mechanical property

KW - Sintering

KW - Thermodynamic stability

KW - YSZ-WC

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DO - 10.1016/j.ceramint.2022.12.216

M3 - Article

AN - SCOPUS:85146348444

SN - 0272-8842

VL - 49

SP - 13414

EP - 13424

JO - Ceramics International

JF - Ceramics International

IS - 9

ER -

Thermodynamic stability and mechanical evaluation of YSZ-WC composite ceramics fabricated by pressureless sintering and hot pressing

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Keywords

ASJC Scopus subject areas

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