CAJ | 학술논문

以纳米SiB6颗粒为增强相，YAG为烧结助剂，采用无压液相烧结技术制备了SiC／纳米SiB6复合陶瓷，主要研究两步烧结对复合陶瓷烧结特性和力学性能的影响。研究结果表明，两步烧结对复合陶瓷的烧结性能和力学性能有一定的影响。第一步烧结温度由1850℃升至1900℃，SiC／纳米SiB。复合陶瓷的收缩率、失重率和相对密度增加，抗弯强度和维氏硬度整体下降；而第二步烧结温度由1850℃升高到1900℃，复合陶瓷失重率增加，收缩率和相对密度下降，抗弯强度和维氏硬度均有所提高。
이납미SiB6과립위증강상，YAG위소결조제，채용무압액상소결기술제비료SiC／납미SiB6복합도자，주요연구량보소결대복합도자소결특성화역학성능적영향。연구결과표명，량보소결대복합도자적소결성능화역학성능유일정적영향。제일보소결온도유1850℃승지1900℃，SiC／납미SiB。복합도자적수축솔、실중솔화상대밀도증가，항만강도화유씨경도정체하강；이제이보소결온도유1850℃승고도1900℃，복합도자실중솔증가，수축솔화상대밀도하강，항만강도화유씨경도균유소제고。
SiC/SiB6 composite ceramics were synthesized by pressureless liquid phase sintering, using SiBe nanoparticles as the reinforcement and YAG as the sintering aid. The effects of two-step sintering on their sintering properties and mechanical performance were studied. Results show, two-step sintering could affect the sintering properties and mechanical performance of the composite ceramics. When the temperature of the first sintering rose from 1850℃ to 1900℃, the contractiveness, mass loss and relative density of SiC/SiBe composite ceramics increased, but the flexural strength and Vickers hardness decreased; when the temperature of the second sintering rose from 1850℃ to 1900℃, the mass loss increased, the contravenes and relative density decreased, but the flexural strength and Vickers hardness were enhanced.