CAJ | 학술논문

利用凝胶注模成型工艺,在固定单体交联荆总质量的情况下,改变单体与交联剂的质量比例,制备出不同单体与交联剂比例的多孔氮化硅陶瓷.借助扫描电子显微镜、Archimedes法和三点弯曲法等方法研究了单体与交联剂比例对多孔氮化硅陶瓷的微观结构和基本力学性能的影响.结果表明,随着单体与交联剂比例的增大,试样的干燥收缩率增大;当单体与交联剂比例≥15时,试样排胶后出现开裂现象;当单体与交联剂比例<15时,随着单体与交联剂比例增大,烧成后的试样强度呈增大的趋势.
이용응효주모성형공예,재고정단체교련형총질량적정황하,개변단체여교련제적질량비례,제비출불동단체여교련제비례적다공담화규도자.차조소묘전자현미경、Archimedes법화삼점만곡법등방법연구료단체여교련제비례대다공담화규도자적미관결구화기본역학성능적영향.결과표명,수착단체여교련제비례적증대,시양적간조수축솔증대;당단체여교련제비례≥15시,시양배효후출현개렬현상;당단체여교련제비례<15시,수착단체여교련제비례증대,소성후적시양강도정증대적추세.
By using gel-casting process, porous silicon nitride ceramics of different ratios between monomer and cross-linker were prepared under the condition of a fixed total amount but different proportion of monomer and crosslinking agent. The effects of different proportion of monomer and cross-linking agent on the microstructure and mechanical properties of porous silicon nitride were studied by means of the scanning electron microscopy ( SEM), archimedes method and three-point bending method. The results showed that the drying shrinkage of specimens increased as the proportion of monomer and cross-linking agent increased, the specimens cracked after binders burning when the proportion of monomer and cross-linking agent was above or equal 15. However, those sintering specimens with proportions of monomer and cross-linking agent below 15 displayed a rising trend of strength as the proportion increased.