Influence of Sintering Temperature on Microstructure and Mechanical Properties of Al2O3 Ceramic via 3D Stereolithography

He Li; Yongsheng Liu; Yansong Liu; Kehui Hu; Zhigang Lu; Jingjing Liang

doi:10.1007/s40195-019-00950-y

Influence of Sintering Temperature on Microstructure and Mechanical Properties of Al₂O₃ Ceramic via 3D Stereolithography

He Li, Yongsheng Liu, Yansong Liu, Kehui Hu, Zhigang Lu, Jingjing Liang

School of Materials Sience and Engineering

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

62 Scopus citations

Abstract

In this work, aluminum oxide (Al₂O₃) ceramic samples were fabricated by 3D stereolithography printing. Printing process was followed by debinding and sintering. In addition, the effect of sintering temperature on microstructure and properties was investigated. Flexure strength was observed to increase with increasing sintering temperature due to fewer pores, fewer defects and stronger grain boundary bonding of samples at higher sintering temperatures. Maximum flexure strength of 138.5 MPa was obtained when sintering temperature was 150 °C. Furthermore, the shrinkage along length direction decreased with the decreasing sintering temperature until reaching minimum value of 1.02% after sintering at 1200 °C. After sintering at 1280 °C, flexure strength was 24.0 MPa and the shrinkage along length direction was 2.1%, which meets demands of ceramic core.

Original language	English
Pages (from-to)	204-214
Number of pages	11
Journal	Acta Metallurgica Sinica (English Letters)
Volume	33
Issue number	2
DOIs	https://doi.org/10.1007/s40195-019-00950-y
State	Published - 1 Feb 2020

Keywords

3D
Aluminum oxide
Shrinkage
Sintering temperature
Stereolithography

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title = "Influence of Sintering Temperature on Microstructure and Mechanical Properties of Al2O3 Ceramic via 3D Stereolithography",

abstract = "In this work, aluminum oxide (Al2O3) ceramic samples were fabricated by 3D stereolithography printing. Printing process was followed by debinding and sintering. In addition, the effect of sintering temperature on microstructure and properties was investigated. Flexure strength was observed to increase with increasing sintering temperature due to fewer pores, fewer defects and stronger grain boundary bonding of samples at higher sintering temperatures. Maximum flexure strength of 138.5 MPa was obtained when sintering temperature was 150 °C. Furthermore, the shrinkage along length direction decreased with the decreasing sintering temperature until reaching minimum value of 1.02% after sintering at 1200 °C. After sintering at 1280 °C, flexure strength was 24.0 MPa and the shrinkage along length direction was 2.1%, which meets demands of ceramic core.",

keywords = "3D, Aluminum oxide, Shrinkage, Sintering temperature, Stereolithography",

author = "He Li and Yongsheng Liu and Yansong Liu and Kehui Hu and Zhigang Lu and Jingjing Liang",

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doi = "10.1007/s40195-019-00950-y",

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T1 - Influence of Sintering Temperature on Microstructure and Mechanical Properties of Al2O3 Ceramic via 3D Stereolithography

AU - Li, He

AU - Liu, Yongsheng

AU - Liu, Yansong

AU - Hu, Kehui

AU - Lu, Zhigang

AU - Liang, Jingjing

PY - 2020/2/1

Y1 - 2020/2/1

N2 - In this work, aluminum oxide (Al2O3) ceramic samples were fabricated by 3D stereolithography printing. Printing process was followed by debinding and sintering. In addition, the effect of sintering temperature on microstructure and properties was investigated. Flexure strength was observed to increase with increasing sintering temperature due to fewer pores, fewer defects and stronger grain boundary bonding of samples at higher sintering temperatures. Maximum flexure strength of 138.5 MPa was obtained when sintering temperature was 150 °C. Furthermore, the shrinkage along length direction decreased with the decreasing sintering temperature until reaching minimum value of 1.02% after sintering at 1200 °C. After sintering at 1280 °C, flexure strength was 24.0 MPa and the shrinkage along length direction was 2.1%, which meets demands of ceramic core.

AB - In this work, aluminum oxide (Al2O3) ceramic samples were fabricated by 3D stereolithography printing. Printing process was followed by debinding and sintering. In addition, the effect of sintering temperature on microstructure and properties was investigated. Flexure strength was observed to increase with increasing sintering temperature due to fewer pores, fewer defects and stronger grain boundary bonding of samples at higher sintering temperatures. Maximum flexure strength of 138.5 MPa was obtained when sintering temperature was 150 °C. Furthermore, the shrinkage along length direction decreased with the decreasing sintering temperature until reaching minimum value of 1.02% after sintering at 1200 °C. After sintering at 1280 °C, flexure strength was 24.0 MPa and the shrinkage along length direction was 2.1%, which meets demands of ceramic core.

KW - 3D

KW - Aluminum oxide

KW - Shrinkage

KW - Sintering temperature

KW - Stereolithography

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M3 - 文章

AN - SCOPUS:85074506167

SN - 1006-7191

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SP - 204

EP - 214

JO - Acta Metallurgica Sinica (English Letters)

JF - Acta Metallurgica Sinica (English Letters)

IS - 2

ER -

Influence of Sintering Temperature on Microstructure and Mechanical Properties of Al₂O₃ Ceramic via 3D Stereolithography

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