High-entropy reinforced zirconia foamed ceramic and preparation method thereof
By introducing high-entropy ceramic powder into zirconia foam ceramics, the problems of poor thermal shock resistance and insufficient strength at high temperatures are solved, and the high-temperature mechanical properties and thermal shock resistance of the material are improved.
CN119684024APending Publication Date: 2025-03-25佛山市金刚材料科技有限公司 +1
0 Cites 0 Cited by
Patent Information
- Application Number
- CN202411609515.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-03-25
AI Technical Summary
Technical Problem
Existing zirconia foam ceramics have low thermal shock resistance at high temperatures and have low strength due to high through-poration.
Method used
High-entropy ceramic powder is used as an additive to prepare high-entropy reinforced zirconia foam ceramics through sponge sizing and sintering to improve the strength, toughness and thermal stability of the material and reduce thermal conductivity.
Benefits of technology
It significantly improves the high-temperature thermal shock resistance of zirconia foam ceramics, enhances the mechanical strength and thermal shock resistance of the material, and meets the requirements of high-temperature liquid metal casting and casting.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses high-entropy reinforced zirconia foamed ceramic and a preparation method thereof, and relates to the technical field of high-entropy powder and foamed ceramic. The preparation method of the high-entropy reinforced zirconium oxide foamed ceramic comprises the following steps: mixing HfO2, TaO2, NbO2, TiO2 and ZrO2 through ball milling to obtain mixed powder, and calcining and synthesizing the mixed powder to obtain high-entropy ceramic, carrying out refining treatment on the high-entropy ceramic to obtain high-entropy ceramic powder; preparing the high-entropy ceramic powder and the zirconium oxide powder into ceramic slurry; dipping the ceramic slurry with sponge, and rolling to form a foamed ceramic green body; and drying the foamed ceramic green body, and sintering to obtain the high-entropy reinforced zirconia foamed ceramic. The high-entropy ceramic powder is used as an additive, so that the strength, toughness and thermal stability of the zirconium oxide material can be improved, the thermal conductivity of the zirconium oxide material can be reduced, and the high-temperature thermal shock resistance of the zirconium oxide foamed ceramic can be remarkably improved.
Need to check novelty before this filing date? Find Prior Art