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Fe₂O₃对SiC基泡沫陶瓷过滤器性能的影响

Effect of Fe₂O₃ on properties of SiC-base ceramic foam filter

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【Author】 WANG Zhe~1,REN Feng-zhang~1,LI Feng-jun~(2,3),MA Zhan-hong~1,LIU Ping~1,WANG Li-mei~1(1.School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471003,China; 2.Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China;3.China Yituo Group Limited Corporation,Luoyang 471004,China)

【机构】河南科技大学材料科学与工程学院；清华大学机械学院；河南科技大学材料科学与工程学院河南洛阳471003；河南洛阳471003；北京100084；中国一拖集团有限公司；河南洛阳471004；

【摘要】采用有机前驱体浸渍法制备SiC基泡沫陶瓷过滤器,通过对SiC基泡沫陶瓷过滤器热震性、抗压强度的测试以及显微结构的分析,研究了Fe2O3对泡沫陶瓷过滤器强度和烧结等性能的影响。实验表明:随着Fe2O3含量的增加,泡沫陶瓷过滤器的抗压强度随之增加,而抗热震次数显著减少;Fe2O3的加入能够起到助烧作用,但是过量的Fe2O3会导致烧结体产生过量的玻璃相,Fe2O3的含量应控制在1.5wt%以内。更多还原

【Abstract】 The polyurethane foam was used as carrier to fabricate SiC foam ceramics.The compression strength and thermal shock-resistance of the ceramic foam with various Fe₂O₃ content were investigated,and the microstructure and composition of the phase were studied and analyzed by SEM and EDS,respectively.It is found that with the increasing of Fe₂O₃ the thermal shock-resistance times of the ceramic foam is obviously decreased.The Fe₂O₃ content influnces the sinter behavior of the SiC foam ceramics.Superfluous Fe₂O₃ made the formation of excessive glass phase in the ceramic foam.The proper content of Fe₂O₃ is less than 1.5wt%.更多还原