Densification and microstructural evolution of bulk Al                         2                         O                         3                         –Y                         3                         Al                         5                         O                         12                         (YAG) eutectic ceramic fabricated by spark plasma sintering

Di Zhao; Haijun Su; Haifang Liu; Yuan Liu; Zhonglin Shen; Bin Yao; Min Guo; Yueling Guo; Jun Zhang; Lin Liu; Hengzhi Fu

doi:10.1016/j.ceramint.2019.03.151

Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering

Di Zhao, Haijun Su^*, Haifang Liu, Yuan Liu, Zhonglin Shen, Bin Yao, Min Guo, Yueling Guo, Jun Zhang, Lin Liu, Hengzhi Fu

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

5 Citations (Scopus)

Abstract

Highly dense Al ₂ O ₃ [sbnd]Y ₃ Al ₅ O ₁₂ (YAG) eutectic bulk ceramics are successfully prepared by spark plasma sintering (SPS) using fine ceramic particles with homogeneous eutectic structure. The fine ceramic particles are obtained by pulverizing the eutectic ceramic rods prepared with laser floating zone melting (LFZM). The densification and microstructural evolution of eutectic ceramic particles during SPS are investigated. The results show that the sintering process can be divided into four stages, and densification is mainly accomplished with a short time in the stage of 1450–1580 °C. High-temperature diffusions on grain surface and in lattice or grain boundary of fine particles are primary densification mechanisms. Three types of microstructural evolutions during sintering are revealed, in which large eutectic particles mainly consolidate with an indirect way due to fine particles between them. On the basis, the effects of sintering temperature on microstructure and mechanical properties are discussed. The results pave a feasible way to prepare bulk eutectic ceramics with enhanced toughness by sintering method.

Original language	English
Pages (from-to)	12337-12343
Number of pages	7
Journal	Ceramics International
Volume	45
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2019.03.151
Publication status	Published - 15 Jun 2019
Externally published	Yes

Keywords

Al O /YAG
Eutectic
Laser floating zone
Spark plasma sintering

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10.1016/j.ceramint.2019.03.151

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Zhao, D., Su, H., Liu, H., Liu, Y., Shen, Z., Yao, B., Guo, M., Guo, Y., Zhang, J., Liu, L., & Fu, H. (2019). Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering Ceramics International, 45(9), 12337-12343. https://doi.org/10.1016/j.ceramint.2019.03.151

Zhao, Di ; Su, Haijun ; Liu, Haifang et al. / Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering In: Ceramics International. 2019 ; Vol. 45, No. 9. pp. 12337-12343.

@article{0f2830960b674948aab9ec9391fce429,

title = " Densification and microstructural evolution of bulk Al 2 O 3 –Y 3 Al 5 O 12 (YAG) eutectic ceramic fabricated by spark plasma sintering ",

abstract = " Highly dense Al 2 O 3 [sbnd]Y 3 Al 5 O 12 (YAG) eutectic bulk ceramics are successfully prepared by spark plasma sintering (SPS) using fine ceramic particles with homogeneous eutectic structure. The fine ceramic particles are obtained by pulverizing the eutectic ceramic rods prepared with laser floating zone melting (LFZM). The densification and microstructural evolution of eutectic ceramic particles during SPS are investigated. The results show that the sintering process can be divided into four stages, and densification is mainly accomplished with a short time in the stage of 1450–1580 °C. High-temperature diffusions on grain surface and in lattice or grain boundary of fine particles are primary densification mechanisms. Three types of microstructural evolutions during sintering are revealed, in which large eutectic particles mainly consolidate with an indirect way due to fine particles between them. On the basis, the effects of sintering temperature on microstructure and mechanical properties are discussed. The results pave a feasible way to prepare bulk eutectic ceramics with enhanced toughness by sintering method.",

keywords = "Al O /YAG, Eutectic, Laser floating zone, Spark plasma sintering",

author = "Di Zhao and Haijun Su and Haifang Liu and Yuan Liu and Zhonglin Shen and Bin Yao and Min Guo and Yueling Guo and Jun Zhang and Lin Liu and Hengzhi Fu",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

month = jun,

day = "15",

doi = "10.1016/j.ceramint.2019.03.151",

language = "English",

volume = "45",

pages = "12337--12343",

journal = "Ceramics International",

issn = "0272-8842",

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number = "9",

}

Zhao, D, Su, H, Liu, H, Liu, Y, Shen, Z, Yao, B, Guo, M, Guo, Y, Zhang, J, Liu, L & Fu, H 2019, ' Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering ', Ceramics International, vol. 45, no. 9, pp. 12337-12343. https://doi.org/10.1016/j.ceramint.2019.03.151

Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering . / Zhao, Di; Su, Haijun; Liu, Haifang et al.
In: Ceramics International, Vol. 45, No. 9, 15.06.2019, p. 12337-12343.

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

TY - JOUR

T1 - Densification and microstructural evolution of bulk Al 2 O 3 –Y 3 Al 5 O 12 (YAG) eutectic ceramic fabricated by spark plasma sintering

AU - Zhao, Di

AU - Su, Haijun

AU - Liu, Haifang

AU - Liu, Yuan

AU - Shen, Zhonglin

AU - Yao, Bin

AU - Guo, Min

AU - Guo, Yueling

AU - Zhang, Jun

AU - Liu, Lin

AU - Fu, Hengzhi

PY - 2019/6/15

Y1 - 2019/6/15

N2 - Highly dense Al 2 O 3 [sbnd]Y 3 Al 5 O 12 (YAG) eutectic bulk ceramics are successfully prepared by spark plasma sintering (SPS) using fine ceramic particles with homogeneous eutectic structure. The fine ceramic particles are obtained by pulverizing the eutectic ceramic rods prepared with laser floating zone melting (LFZM). The densification and microstructural evolution of eutectic ceramic particles during SPS are investigated. The results show that the sintering process can be divided into four stages, and densification is mainly accomplished with a short time in the stage of 1450–1580 °C. High-temperature diffusions on grain surface and in lattice or grain boundary of fine particles are primary densification mechanisms. Three types of microstructural evolutions during sintering are revealed, in which large eutectic particles mainly consolidate with an indirect way due to fine particles between them. On the basis, the effects of sintering temperature on microstructure and mechanical properties are discussed. The results pave a feasible way to prepare bulk eutectic ceramics with enhanced toughness by sintering method.

AB - Highly dense Al 2 O 3 [sbnd]Y 3 Al 5 O 12 (YAG) eutectic bulk ceramics are successfully prepared by spark plasma sintering (SPS) using fine ceramic particles with homogeneous eutectic structure. The fine ceramic particles are obtained by pulverizing the eutectic ceramic rods prepared with laser floating zone melting (LFZM). The densification and microstructural evolution of eutectic ceramic particles during SPS are investigated. The results show that the sintering process can be divided into four stages, and densification is mainly accomplished with a short time in the stage of 1450–1580 °C. High-temperature diffusions on grain surface and in lattice or grain boundary of fine particles are primary densification mechanisms. Three types of microstructural evolutions during sintering are revealed, in which large eutectic particles mainly consolidate with an indirect way due to fine particles between them. On the basis, the effects of sintering temperature on microstructure and mechanical properties are discussed. The results pave a feasible way to prepare bulk eutectic ceramics with enhanced toughness by sintering method.

KW - Al O /YAG

KW - Eutectic

KW - Laser floating zone

KW - Spark plasma sintering

UR - http://www.scopus.com/inward/record.url?scp=85063539972&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2019.03.151

DO - 10.1016/j.ceramint.2019.03.151

M3 - Article

AN - SCOPUS:85063539972

SN - 0272-8842

VL - 45

SP - 12337

EP - 12343

JO - Ceramics International

JF - Ceramics International

IS - 9

ER -

Zhao D, Su H, Liu H, Liu Y, Shen Z, Yao B et al. Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering Ceramics International. 2019 Jun 15;45(9):12337-12343. doi: 10.1016/j.ceramint.2019.03.151

Densification and microstructural evolution of bulk Al ₂ O ₃ –Y ₃ Al ₅ O ₁₂ (YAG) eutectic ceramic fabricated by spark plasma sintering

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Keywords

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