Microstructure and Fracture Toughness of Al&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt;/Er&lt;SUB&gt;3&lt;/SUB&gt;Al&lt;SUB&gt;5&lt;/SUB&gt;O&lt;SUB&gt;12&lt;/SUB&gt; Eutectic Ceramic Prepared by Laser Zone Remelting

Deng, Yangfang; Zhang, Jun; Su, Haijun; Song, Ke; Liu, Lin; Fu, Hengzhi

doi:10.3724/sp.j.1077.2011.00841

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…4. XRD patterns of the Al 2 O 3 /EAG eutectic in situ composite obtained by laser zone remelting [32].…”

Section: Resultsmentioning

confidence: 99%

“…Because of high melting points of the oxides, it is difficult to achieve high growth rate using conventional solidification preparation method. Laser zone remelting (LZR) has been applied to prepare several metal and oxide ceramics but was few to Al 2 O 3 /EAG functional ceramic yet [29][30][31][32]. Especially, because the high cooling rate during melting process, the sample obtained generally had cracks and pores at relatively high rates, and its rapid solidification behavior was not clear [32].…”

Section: Introductionmentioning

confidence: 98%

“…Laser zone remelting (LZR) has been applied to prepare several metal and oxide ceramics but was few to Al 2 O 3 /EAG functional ceramic yet [29][30][31][32]. Especially, because the high cooling rate during melting process, the sample obtained generally had cracks and pores at relatively high rates, and its rapid solidification behavior was not clear [32]. In this study, we focused on the directionally solidified Al 2 O 3 /EAG eutectic in situ composite ceramic plates in order to investigate the rapid solidification microstructure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Laser zone remelting of Al2O3/Er3Al5O12 bulk oxide in situ composite thermal emission ceramics: Influence of rapid solidification

Su¹,

Zhang²,

Ren³

et al. 2013

Materials Research Bulletin

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“…4. XRD patterns of the Al 2 O 3 /EAG eutectic in situ composite obtained by laser zone remelting [32].…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Laser zone remelting of Al2O3/Er3Al5O12 bulk oxide in situ composite thermal emission ceramics: Influence of rapid solidification

Su¹,

Zhang²,

Ren³

et al. 2013

Materials Research Bulletin

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“…Due to the increase of growth rate, the front temperature gradient and solidification rate at the solid-liquid interface of the solidified ceramic both increase, which results in the refinement of its microstructure [16]. …”

Section: Resultsmentioning

confidence: 99%

“…The hardness of the ceramics was measured by the Vickers-Hardness micro-hardness tester (HVS-5, Yantai Huayin Experimental Instrument Co. Ltd., Yantai, China), and the fracture toughness of the solidified ceramic was calculated by the indentation method. Figure 1 shows the schematic diagram of Vickers-Hardness indentation [16]. A 9.8 N load was applied and lasted for 15 s to obtain the hardness value.…”

Section: Methodsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Al2O3/Er3Al5O12 Binary Eutectic Ceramic Prepared by Bridgman Method

et al. 2018

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Directionally solidified Al2O3/Er3Al5O12 (EAG) eutectic ceramic was prepared via vertical Bridgman method with high-frequency induction heating. The effects of the growth rate on the microstructure and mechanical properties of the solidified ceramic were investigated. The experimental results showed that there were no pores or amorphous phases in the directionally solidified Al2O3/EAG eutectic ceramic. Al2O3 phase was embedded in the EAG matrix phase, and the two phases were intertwined with each other to form a typical binary eutectic “hieroglyphic” structure. With the increase of growth rate, the phase size and spacing of the solidified Al2O3/EAG ceramic both decreased, and the growth rate and phase spacing satisfied the λ2v ≈ 60 formula of Jackson-Hunt theory. The cross section microstructure of the solidified ceramic always exhibited an irregular eutectic growth, while the longitudinal section microstructure presented a directional growth. The mechanical properties of the solidified ceramic gradually increased with the increase of growth rate, and the maximum hardness and fracture toughness could reach 21.57 GPa and 2.98 MPa·m1/2 respectively. It was considered that the crack deflection and branching could enhance the toughness of the solidified ceramic effectively.

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Microstructure of the directionally solidified ternary eutectic ceramic Al2O3/MgAl2O4/ZrO2

Zhai

Liu

Jin

2016

Ceramics International

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Microstructure and Fracture Toughness of Al<SUB>2</SUB>O<SUB>3</SUB>/Er<SUB>3</SUB>Al<SUB>5</SUB>O<SUB>12</SUB> Eutectic Ceramic Prepared by Laser Zone Remelting

Cited by 10 publications

References 17 publications

Laser zone remelting of Al2O3/Er3Al5O12 bulk oxide in situ composite thermal emission ceramics: Influence of rapid solidification

Laser zone remelting of Al2O3/Er3Al5O12 bulk oxide in situ composite thermal emission ceramics: Influence of rapid solidification

Microstructure and Mechanical Properties of Al2O3/Er3Al5O12 Binary Eutectic Ceramic Prepared by Bridgman Method

Microstructure of the directionally solidified ternary eutectic ceramic Al2O3/MgAl2O4/ZrO2

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