文献类型：期刊文献

英文题名：Research on the microstructure and mechanical properties of high-entropy composite ceramics

作者：Li, Hui-Ze[1];Zhang, Yan[1];Ni, Bo-Yu[1];Wu, Zhang-Yu[1];Cao, Hao-Yu[1];Yan, Fa-Cai[1];Tang, Rui-Wen[1];Liu, Ye[1]

机构：[1]Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing Key Lab Mech Components Surface & Interface Sci, Shaoxing, Peoples R China

年份：2025

外文期刊名：INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001499891600001)、、EI(收录号：20252318540751)、Scopus(收录号：2-s2.0-105006978759)、WOS

基金：This work was financially supported by the Basic public welfare program projects in Shaoxing city (No. 2023A11005), General scientific research Project of Zhejiang Education Department (Grant No. Y202248367), Post-doctoral fund of Shaoxing University (Grant No. 08220101030), and University-level general research projects of Shaoxing University (Grant No. 2022LG007), Zhuji City "open list" project contract (Grant No. 2022J24)

语种：英文

外文关键词：density; fracture toughness; hardness; HEB-SiC composite ceramics; sintering temperature

外文摘要：To investigate the microstructure and mechanical properties of HEB-SiC composite ceramics, various SiC contents (10 vol%, 20 vol%, 30 vol%) were incorporated as the second phase. (Mo0.2Nb0.2Zr0.2Hf0.2Ti0.2)B2-(10 vol%, 20 vol%, 30 vol%)SiC composite ceramics were synthesized using borothermal/carbothermal reduction followed by SPS. As the sintering temperature increased, the hardness of the composite ceramics remained relatively stable, while the fracture toughness showed a notable improvement. Additionally, with an increase in SiC content, the hardness of the composite ceramics decreased, whereas the fracture toughness increased. The highest hardness values were observed for the 10 vol% SiC samples, measuring 31.4 +/- 1.4 GPa at 1800 degrees C and 31.4 +/- 1.3 GPa at 1900 degrees C. The 30 vol% SiC sample sintered at 1900 degrees C exhibited the highest fracture toughness, reaching 5.24 +/- 0.44 MPam1/2. These findings demonstrate that increasing the SiC content enhances the mechanical properties of high-entropy boride ceramics.