梯度氧化锆/氧化铝陶瓷高温应力的结构依赖性及优化设计

doi:10.11896/cldb.24010215

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Abstract Zirconia (ZrO₂) materials are widely used in various glass furnaces due to its excellent mechanical properties and corrosion resistance to melt glass. However, because of their poor thermal shock resistance, ZrO₂ materials are easy to crack and peel off, which influents the quality of the glass and shortens the service life of the furnace. To provide a material with excellent erosion resistance and thermal shock resistance for glass furnace, composition and structural parameters of the ZrO₂-Al₂O₃ gradient material were optimized based on the analysis of stress field under high temperature by using finite element simulation. The ZrO₂-Al₂O₃ gradient material was prepared using a pressureless sintering process. And the prepared materials show good mechanical properties, thermal shock resistance and erosion resistance. The results show that a high density ZrO₂-Al₂O₃ gradient material without warping deformation can be produced by adopting a symmetrical structural design with high zirconium content layers on both sides and gradient layers in the middle. When the layer number of the ZrO₂-Al₂O₃ gradient material is 5 and the gradient index is 0.9, the maximum equivalent thermal stress and maximum axial stress of the material are relatively small, and the stress gradient is the smallest. The bending strength of the material reaches 668 MPa. And the material possesses good anti-thermal shock properties. In addition, no obvious erosion layer or element diffusion at the surface of the sample can be observed after erosion experiment under 1 500 ℃.

Key words： ZrO₂ graded materials finite element simulation erosion resistance thermal shock resistance

Published: 25 June 2025 Online: 2025-06-19

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	Articles by authors
	CHEN Long
	LIANG Xinxing
	LIANG Baoqing
	WANG Yunjie
	WU Yuanting
	LIU Changqing

Cite this article:

CHEN Long,LIANG Xinxing,LIANG Baoqing, et al. Structure Dependence and Optimization of High Temperature Stress in Zirconia/Alumina Gradient Materials[J]. Materials Reports, 2025, 39(12): 24010215-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24010215 OR https://www.mater-rep.com/EN/Y2025/V39/I12/24010215

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