TY - JOUR A1 - Hu, H.-L. A1 - Zeng, Y.-P. A1 - Xia, Y. A1 - Yao, Dongxu A1 - Zuo, K.-H. A1 - Günster, Jens A1 - Heinrich, J.G. T1 - Rapid fabrication of porous Si3N4/SiC ceramics via nitridation of silicon powder with ZrO2 as catalyst T2 - Ceramics international N2 - Porous Si3N4/SiC ceramics were rapidly prepared with Y2O3 as sintering additive and ZrO2 as nitrided catalyst, using Si and SiC as starting powders. Porous Si3N4/SiC ceramics with 5 wt% ZrO2 addition showed a complete nitridation and good mechanical properties (with a high porosity of 34.96%, flexural strength of 150±4.2 MPa, linear shrinkage of 0.02%). It was revealed that the reciprocal formation of ZrO2 and ZrN effectively enhanced nitridation by inhibiting the melting of silicon in micro-regions. PB - Ceramurgia CY - Faenza KW - D. ZrO2 KW - Rapid nitridation KW - Si3N4/SiC porous ceramics PY - 2014 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/30295 AN - OPUS4-30295 SN - 0272-8842 SN - 1873-3956 VL - 40 IS - 5 SP - 7579 EP - 7582 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany