@article{scholars14995, year = {2021}, pages = {13173--13180}, journal = {Ceramics International}, publisher = {Elsevier Ltd}, doi = {10.1016/j.ceramint.2021.01.182}, number = {9}, volume = {47}, note = {cited By 4}, title = {Microstructure, phase compositions and mechanical properties of slip cast sintered SiC/Si3N4 composites}, author = {Shahrestani, S. and Ismail, M. C. and Kakooei, S. and Beheshti, M.}, issn = {02728842}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099826064&doi=10.1016\%2fj.ceramint.2021.01.182&partnerID=40&md5=f36d405e087e4bc64f7b3d6585c865c9}, keywords = {Mechanical properties; Particle size; Powders; Silica; Silicon; Silicon carbide; Sintering, Average particle size; Different particle sizes; Fine particles; Mixing ratios; Sintered SiC; Sintering temperatures; Slip casting method; Weight ratios, Nitrogen compounds}, abstract = {In this study, a slurry containing a mixture of Si and SiC powders was used to fabricate the SiC/Si3N4 composites by slip casting method and sintering in a nitrogen-controlled furnace. The effects of mixing ratios of Si and SiC powders, different particle sizes of SiC powders as well as three sintering temperatures (1400, 1450, 1490 {\^A}oC) were evaluated for SiC{\^a}??Si3N4 composites. The results demonstrated that the best slurry was prepared using the weight ratio of Si/SiC of 30/70 and the fine-particle size of SiC powders with an average particle size of d50 {\^a}?? 0.45 {\^I}1/4m. The results of XRD and FESEM determined that the sintered composites at 1450 {\^A}oC have the minimum porosity without the SiO2 phase. Besides, with an increase in the sintering temperature, the {\^I}{$\pm$}/{\^I}2-Si3N4 phase ratio increased while the hardness and flexural strength were strongly dependent on the {\^I}{$\pm$}/{\^I}2-Si3N4 phase ratio in the SiC{\^a}??Si3N4 composites. {\^A}{\copyright} 2021 Elsevier Ltd and Techna Group S.r.l.} }