In situ fabrication of highly-dense Al2O3/YAG nanoeutectic composite ceramics by a modified laser surface processing

Haijun Su; Jun Zhang; Weidan Ma; Kaichen Wei; Lin Liu; Hengzhi Fu; Shien-Ping Feng; A. K. Soh

doi:10.1016/j.jeurceramsoc.2013.10.014

In situ fabrication of highly-dense Al₂O₃/YAG nanoeutectic composite ceramics by a modified laser surface processing

Haijun Su, Jun Zhang, Weidan Ma, Kaichen Wei, Lin Liu, Hengzhi Fu, Shien-Ping Feng, A. K. Soh

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

37 Citations (Scopus)

Abstract

Alumina-matrix eutectic in situ composite ceramics present excellent high-temperature mechanical properties, which have been considered as promising next-generation ultra-high temperature structural materials. A modified laser surface processing is developed to in situ fabricate highly-dense Al₂O₃/YAG bulk nanoeutectic ceramics with large size and homogeneous three-dimensional network of nanoeutectic microstructure by introducing two-side remelting and high-temperature preheating. The crack and porosity are avoided, and the eutectic structure achieves a good continuous growth between two solidified layers. The eutectic phases show sharp interface bonding with a defined orientation relationship. The dislocations and crack deflection at high-density phase interfaces importantly contribute to the enhanced fracture toughness. © 2013 Elsevier Ltd.

Original language	English
Pages (from-to)	739-744
Journal	Journal of the European Ceramic Society
Volume	34
Issue number	3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2013.10.014
Publication status	Published - Mar 2014
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Ceramics
Composites
Fracture toughness
Laser surface processing
Rapid solidification

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Cite this

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title = "In situ fabrication of highly-dense Al2O3/YAG nanoeutectic composite ceramics by a modified laser surface processing",

abstract = "Alumina-matrix eutectic in situ composite ceramics present excellent high-temperature mechanical properties, which have been considered as promising next-generation ultra-high temperature structural materials. A modified laser surface processing is developed to in situ fabricate highly-dense Al2O3/YAG bulk nanoeutectic ceramics with large size and homogeneous three-dimensional network of nanoeutectic microstructure by introducing two-side remelting and high-temperature preheating. The crack and porosity are avoided, and the eutectic structure achieves a good continuous growth between two solidified layers. The eutectic phases show sharp interface bonding with a defined orientation relationship. The dislocations and crack deflection at high-density phase interfaces importantly contribute to the enhanced fracture toughness. {\textcopyright} 2013 Elsevier Ltd.",

keywords = "Ceramics, Composites, Fracture toughness, Laser surface processing, Rapid solidification",

author = "Haijun Su and Jun Zhang and Weidan Ma and Kaichen Wei and Lin Liu and Hengzhi Fu and Shien-Ping Feng and Soh, {A. K.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2014",

month = mar,

doi = "10.1016/j.jeurceramsoc.2013.10.014",

language = "English",

volume = "34",

pages = "739--744",

journal = "Journal of the European Ceramic Society",

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TY - JOUR

T1 - In situ fabrication of highly-dense Al2O3/YAG nanoeutectic composite ceramics by a modified laser surface processing

AU - Su, Haijun

AU - Zhang, Jun

AU - Ma, Weidan

AU - Wei, Kaichen

AU - Liu, Lin

AU - Fu, Hengzhi

AU - Feng, Shien-Ping

AU - Soh, A. K.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2014/3

Y1 - 2014/3

N2 - Alumina-matrix eutectic in situ composite ceramics present excellent high-temperature mechanical properties, which have been considered as promising next-generation ultra-high temperature structural materials. A modified laser surface processing is developed to in situ fabricate highly-dense Al2O3/YAG bulk nanoeutectic ceramics with large size and homogeneous three-dimensional network of nanoeutectic microstructure by introducing two-side remelting and high-temperature preheating. The crack and porosity are avoided, and the eutectic structure achieves a good continuous growth between two solidified layers. The eutectic phases show sharp interface bonding with a defined orientation relationship. The dislocations and crack deflection at high-density phase interfaces importantly contribute to the enhanced fracture toughness. © 2013 Elsevier Ltd.

AB - Alumina-matrix eutectic in situ composite ceramics present excellent high-temperature mechanical properties, which have been considered as promising next-generation ultra-high temperature structural materials. A modified laser surface processing is developed to in situ fabricate highly-dense Al2O3/YAG bulk nanoeutectic ceramics with large size and homogeneous three-dimensional network of nanoeutectic microstructure by introducing two-side remelting and high-temperature preheating. The crack and porosity are avoided, and the eutectic structure achieves a good continuous growth between two solidified layers. The eutectic phases show sharp interface bonding with a defined orientation relationship. The dislocations and crack deflection at high-density phase interfaces importantly contribute to the enhanced fracture toughness. © 2013 Elsevier Ltd.

KW - Ceramics

KW - Composites

KW - Fracture toughness

KW - Laser surface processing

KW - Rapid solidification

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U2 - 10.1016/j.jeurceramsoc.2013.10.014

DO - 10.1016/j.jeurceramsoc.2013.10.014

M3 - RGC 21 - Publication in refereed journal

SN - 0955-2219

VL - 34

SP - 739

EP - 744

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 3

ER -