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陶瓷材料
Ultra-high temperature ceramics (UHTCs) are a type of ceramics with robust resistance against extremely high temperature, being thought of as a potential candidate as thermal protected materials.
Ultra-High Temperature Ceramics (UHTCs)
Ultra-high temperature ceramics (UHTCs) are specialized materials with remarkable resistance to extreme heat, making them ideal for use in high-temperature environments. They are particularly well-suited for aerospace, rocket propulsion systems, hypersonic vehicles, and other advanced technological applications due to their durability and performance under such conditions.
Zirconium Diboride (ZrB2): Properties and Challenges
Zirconium Diboride (ZrB2) is a widely studied UHTC material known for its outstanding properties, including a high melting point of 3250°C, hardness of 22 GPa, and good thermal shock resistance. However, ZrB2 struggles with poor oxidation resistance at high temperatures. To improve its performance, materials such as silicon carbide (SiC) and zirconium carbide (ZrC) are often added to the ZrB2 matrix. These additions enhance oxidation resistance, control grain growth, and suppress the formation of depletion layers, improving both physical and mechanical properties.
Ternary Ceramic Synthesis via Sol-Gel Method
In this study, the sol-gel method combined with high-temperature sintering was used to synthesize a ternary ceramic material composed of ZrB2-SiC-ZrC nanostructures. The effects of varying composition ratios, sintering temperatures, and other processing parameters on the resulting morphology and crystalline phases were thoroughly investigated.
Future work
Future research will focus on further improving the oxidation resistance and mechanical properties of UHTCs, particularly by exploring new additive materials and advanced synthesis techniques. Additionally, optimizing the sol-gel method for better control of microstructure and phase composition will be crucial for enhancing the overall performance of ternary ceramics. Investigations into scaling up production methods and real-world testing in aerospace and other high-temperature applications will also be essential for practical deployment of these materials.