Fabrication and Oxidation-Resistance Property of Coated ZrB2-YAG-Al2O3 Multi-Phase Ceramics

Jie Guang Song; Fang Wang; Min Han Xu; Shi Bin Li; Gang Chang Ji

doi:10.4028/www.scientific.net/KEM.544.347

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Effect of Coupled Conditions of Thermal Cycle and Dump Environment on Microstructure of 5mol% Yttria Stabilized Zirconia
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Thermal Stress Analysis of Photovoltaic Hollow Glass Based on ANSYS
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Effect of CrTiAlN Coatings on High-Temperature Oxidation Behavior of H13 Steel
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Fabrication and Oxidation-Resistance Property of Coated ZrB₂-YAG-Al₂O₃ Multi-Phase Ceramics
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 544Fabrication and Oxidation-Resistance Property of...

Fabrication and Oxidation-Resistance Property of Coated ZrB₂-YAG-Al₂O₃ Multi-Phase Ceramics

Abstract:

Zirconium diboride is widely applied because of some excellent performances. The results show the A1(OH)3-Y(OH)3/ZrB2 composite powders is prepared by a co-precipitation method, the shell-core structure A12O3-Y2O3/ZrB2 composite powders is prepared by sintering A1(OH)3-Y(OH)3/ZrB2 composite powders. The coating and density ZrB2-YAG-Al2O3 multi-phase ceramics is sintered at 1700°C, 20MPa for 4min by using Al2O3-Y2O3-80wt%ZrB2 composite powders, the oxidation weight is increased with increasing the oxidation temperature, however, the oxidation weight is decreased with increasing the YAG-Al2O3 content. ZrB2 reacted with O2 to form B2O3, and B2O3 is reacted with Al2O3 to form Al18B4O33, which is melted and coated on the surface of ceramics to form a protective layer for the oxidation resistance of ceramics at high temperature.

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Key Engineering Materials (Volume 544)

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347-350

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.544.347

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Online since:

March 2013

Authors:

Jie Guang Song, Fang Wang, Min Han Xu, Shi Bin Li, Gang Chang Ji

Keywords:

Oxidation-Resistance Property, Ultra-High-Temperature Ceramics, Zirconium Diboride

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