Effect of Al2O3-CeO2 molar ratio on mechanical properties of SiC ceramics

Chao Chang; Yang Liu; Wei Ming Guo; Ying Long; Xiao Ming Duan; De Chang Jia; Hua Tay Lin

doi:10.1016/j.ceramint.2023.11.247

Effect of Al₂O₃-CeO₂ molar ratio on mechanical properties of SiC ceramics

Chao Chang
, Yang Liu
, Wei Ming Guo
, Ying Long^*
, Xiao Ming Duan
, De Chang Jia
, Hua Tay Lin

^*Corresponding author for this work

Guangdong University of Technology
Harbin Institute of Technology

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

7 Scopus citations

Abstract

In the present work, SiC ceramic samples with Al₂O₃ and CeO₂ sintering additives were prepared by spark plasma sintering (SPS). The effects of Al₂O₃ to CeO₂ molar ratio from 6.25:3.75 to 5:5, 4:6 and 3:7 on sintering behavior, microstructure, Vickers hardness, and fracture toughness of the SiC ceramic samples were investigated and compared. The results showed that, the relative density of SiC ceramic samples increased from 97.8% to 99.2%, and the Vickers hardness increased from 19.72 ± 0.41 GPa to 21.18 ± 0.92 GPa as the CeO₂ molar ratio increased. The increase in CeO₂ molar ratio effectively improved the densification and hardness of SiC ceramics.

Original language	English
Pages (from-to)	5032-5037
Number of pages	6
Journal	Ceramics International
Volume	50
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2023.11.247
State	Published - 1 Feb 2024
Externally published	Yes

Keywords

Ceramic composite
Mechanical properties
Microstructure
Molar ratio of AlO to CeO

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10.1016/j.ceramint.2023.11.247

Cite this

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title = "Effect of Al2O3-CeO2 molar ratio on mechanical properties of SiC ceramics",

abstract = "In the present work, SiC ceramic samples with Al2O3 and CeO2 sintering additives were prepared by spark plasma sintering (SPS). The effects of Al2O3 to CeO2 molar ratio from 6.25:3.75 to 5:5, 4:6 and 3:7 on sintering behavior, microstructure, Vickers hardness, and fracture toughness of the SiC ceramic samples were investigated and compared. The results showed that, the relative density of SiC ceramic samples increased from 97.8\% to 99.2\%, and the Vickers hardness increased from 19.72 ± 0.41 GPa to 21.18 ± 0.92 GPa as the CeO2 molar ratio increased. The increase in CeO2 molar ratio effectively improved the densification and hardness of SiC ceramics.",

keywords = "Ceramic composite, Mechanical properties, Microstructure, Molar ratio of AlO to CeO",

author = "Chao Chang and Yang Liu and Guo, \{Wei Ming\} and Ying Long and Duan, \{Xiao Ming\} and Jia, \{De Chang\} and Lin, \{Hua Tay\}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd and Techna Group S.r.l.",

year = "2024",

month = feb,

day = "1",

doi = "10.1016/j.ceramint.2023.11.247",

language = "英语",

volume = "50",

pages = "5032--5037",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "3",

}

TY - JOUR

T1 - Effect of Al2O3-CeO2 molar ratio on mechanical properties of SiC ceramics

AU - Chang, Chao

AU - Liu, Yang

AU - Guo, Wei Ming

AU - Long, Ying

AU - Duan, Xiao Ming

AU - Jia, De Chang

AU - Lin, Hua Tay

PY - 2024/2/1

Y1 - 2024/2/1

N2 - In the present work, SiC ceramic samples with Al2O3 and CeO2 sintering additives were prepared by spark plasma sintering (SPS). The effects of Al2O3 to CeO2 molar ratio from 6.25:3.75 to 5:5, 4:6 and 3:7 on sintering behavior, microstructure, Vickers hardness, and fracture toughness of the SiC ceramic samples were investigated and compared. The results showed that, the relative density of SiC ceramic samples increased from 97.8% to 99.2%, and the Vickers hardness increased from 19.72 ± 0.41 GPa to 21.18 ± 0.92 GPa as the CeO2 molar ratio increased. The increase in CeO2 molar ratio effectively improved the densification and hardness of SiC ceramics.

AB - In the present work, SiC ceramic samples with Al2O3 and CeO2 sintering additives were prepared by spark plasma sintering (SPS). The effects of Al2O3 to CeO2 molar ratio from 6.25:3.75 to 5:5, 4:6 and 3:7 on sintering behavior, microstructure, Vickers hardness, and fracture toughness of the SiC ceramic samples were investigated and compared. The results showed that, the relative density of SiC ceramic samples increased from 97.8% to 99.2%, and the Vickers hardness increased from 19.72 ± 0.41 GPa to 21.18 ± 0.92 GPa as the CeO2 molar ratio increased. The increase in CeO2 molar ratio effectively improved the densification and hardness of SiC ceramics.

KW - Ceramic composite

KW - Mechanical properties

KW - Microstructure

KW - Molar ratio of AlO to CeO

UR - https://www.scopus.com/pages/publications/85178341926

U2 - 10.1016/j.ceramint.2023.11.247

DO - 10.1016/j.ceramint.2023.11.247

M3 - 文章

AN - SCOPUS:85178341926

SN - 0272-8842

VL - 50

SP - 5032

EP - 5037

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Effect of Al₂O₃-CeO₂ molar ratio on mechanical properties of SiC ceramics

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Keywords

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