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电致发热SiC多孔陶瓷制备研究 被引量:4

Preparation of a New Functional Porous SiC
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摘要 采用一种新方法制备了具有2种孔隙结构的电致发热SiC多孔陶瓷。根据SEM,X射线分析,气孔率与电阻率等测试结果可知,试样主孔道直径在300μm左右,微孔道直径在30~40μm,气孔率可达55%,电阻率在0.0007~0.00195Ω·m。研究了烧结温度和烧结时间与电阻率的关系,并根据机械性能的测试结果,探讨了试样的强度与烧结温度的关系。 In this paper, a new function SiC porous ceramic which can produce heat through electricity was prepared successfully. It is of two kinds pore structure. According to the result of SEM, X-ray, porosity and resistivity, the main pore diameter of the sample is about 300p, m and the micro-pore diameter is about 30 - 40μm. Its porosity is up to 55% and resistivity is 0. 0007 - 0. 00195Ω·m. The dependence of resistivity on sintering temperature or time was studied. According to test result of mechanical performance, the relation between strength and sintering temperature was discussed.
出处 《硅酸盐通报》 CAS CSCD 北大核心 2005年第6期112-115,共4页 Bulletin of the Chinese Ceramic Society
关键词 电致发热 碳化硅 多孔陶瓷 电阻率 heating element silicon carbide porous ceramics resistivity porosity
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