Synthesis of high-entropy carbides (TiTaNb)xHfyZrzC with strong thermal-oxidative resistant properties by mechanical alloying and spark plasma sintering
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T(2023)
摘要
The paper presents the synthesis of single-phase high-entropy carbides (TiZrHfTaNb)C, (TiTaNb)0.45Hf0.275Zr0.275C and (TiTaNb)0.3Hf0.35Zr0.35C by mechanical alloying and spark plasma sintering. High-entropy carbides are promising as a material for jet engine parts. Mechanical alloying mode was obtained, in which the homogeneity of the powder and low technical grinding is achieved.The analysis of the micro-structure, phase and chemical composition of the obtained samples was carried out. HEC with an FCC structure and a small content of zirconium and hafanium oxides is formed at a temperature of 1600 degrees C. Increasing the sintering temperature to 2000 degrees C promotes the dissolution of oxides and the formation of a single-phase HEC. The microhardness of the samples ranged from 1600 to 2000 HV. The compressive strength of the samples was from 600 to 800 MPa. According to the results of gas dynamic tests, the (TiTaNb)0.3Hf0.35Zr0.35C alloy showed excellent thermal-oxidative resistance up to a temperature of 2250 degrees C.
更多查看译文
关键词
Ceramics,High -entropy carbides,Thermal -oxidative resistance,Mechanical alloying,Spark plasma sintering
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要