Formation mechanisms of Ti_(3)(Si,Al)C_(2)/Al_(2)O_(3) composites from Ti_(3)AlC_(2) and SiO via low-temperature sintering

作     者：Zhenyu ZHANG Jun JI Yingying CHEN Deli MA Sique CHEN Hailing YANG Guopu SHI Zhi WANG Mengyong SUN Fei CHEN Shifeng HUANG Qinggang LI 

作者机构：Shandong Provincial Key Laboratory of Preparation and Measurement of Building MaterialsUniversity of JinanJinan 250022China School of Materials Science and EngineeringUniversity of JinanJinan 250022China Institute of China North Industries GroupYantai 264003China State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2023年第12卷第1期

页      面：93-110页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：support by the Shandong Province Key Research and Development Plan (Grant No.2020JMRH0401) the National Natural Science Foundation of China (Grant No.51872118) the Key Research and Development Program of Shandong Province (Grant No.2019RKB01018) the Shandong Provincial Natural Science Foundation (Grant Nos.ZR2018PEM008 and ZR2019MEM055) supported by the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology and was financially supported by the National Natural Science Foundation of China (Grant No.51632003) the Taishan Scholars Program the Case-by-Case Project for Top Outstanding Talents of Jinan 

主　　题：aluminum oxide(Al_(2)O_(3)) current-assisted sintering(CAS) silicon monoxide(SiO) Ti_(3)(Si Al)C_(2) 

摘      要：Ti_(3)SiC_(2)/Al_(2)O_(3) composites have attracted attention due to their excellent mechanical and electromagnetic properties,but the high temperatures(≥1400℃)required for the densification of aluminum oxide(Al_(2)O_(3))leads to the decomposition of Ti_(3)SiC_(2).To address this issue,Ti_(3)(Si_(x)Al_(1−x))C2/Al_(2)O_(3)(x represents the Si content)composites were synthesized for the first time via hot-pressing(HP)sintering and current-assisted sintering(CAS)of mixed Ti_(3)AlC_(2) and silicon monoxide(SiO)powders at 1300 and 1200℃,*** approaches produced composites with x values greater than 0.9,indicating that the compositions of the prepared composites were similar to those of Ti_(3)SiC_(2)/Al_(2)O_(3) *** synthetic mechanism involved substitution and continuous interdiffusion of Al and Si *** composite prepared by CAS at 1200℃ was compacted,whereas the composite prepared by HP had a low *** low-temperature densification mechanism is attributed to the combined effects of amorphous SiO,liquid Al,and the high heating rates for *** flexural strength and hardness of the composite prepared by CAS were also comparable to those of compacted Ti_(3)SiC_(2)/Al_(2)O_(3) composites.