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Preparation of SiC composite ceramic filtration membrane materials by air spray technology

机译：空气喷涂技术制备SiC复合陶瓷过滤膜材料

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Silicon carbide composite ceramic filtration membrane materials were prepared by air spray technology. In this process, using some organic solvents such as glycerol, ethanol, etc to fabricate a stable, excellent dispersibility inorganic silicon carbide slurry. Using air spray technology and coating the filter membrane. According to some heat treatments that sintering temperature from1350°C to 1450°C for 3h, we can prepare a well-distributed, jumbo size SiC ceramic composite filtration membrane. The effects of particle size of SiC, sintering temperature, different ceramic binders on SiC filtration membrane were investigated. Meanwhile, the reaction bonding characteristics, phase composition, flexural strength as well as microstructure of SiC composite ceramics filtration membrane were also investigated. It is demonstrated that 22.8μm silicon carbide sintered at 1450°C will obtain a better performance. With particle size increases, silicon carbide porous ceramic surface oxide layer thinner prepared at the same temperature. When 15wt% ceramic binder was added, a flexural strength of 36.6MPa was achieved at an open porosity of 35.3%. Al(OH)_3 used as a ceramic binder is very suitable due to its outstanding connectivity and better uniformity.
机译：通过空气喷涂技术制备碳化硅复合陶瓷过滤膜材料。在该方法中，使用一些有机溶剂如甘油，乙醇等制成稳定，优异的分散性无机碳化硅浆料。使用空气喷涂技术并涂覆过滤膜。根据一些热处理，烧结温度从1350℃至1450℃的3小时，我们可以制备一个分布均匀的巨型巨型SiC陶瓷复合过滤膜。研究了SiC，烧结温度，不同陶瓷粘合剂对SiC过滤膜的粒度的影响。同时，还研究了反应键合特征，相组合物，弯曲强度以及SiC复合陶瓷过滤膜的微观结构。结果证明，在1450℃下烧结22.8μm碳化硅将获得更好的性能。具有粒度的增加，在相同温度下制备的碳化硅多孔陶瓷表面氧化物层稀释剂。当加入15wt％陶瓷粘合剂时，在开放孔隙率为35.3％的弯曲孔中实现36.6MPa的弯曲强度。使用作为陶瓷粘合剂的Al（OH）_3由于其出色的连通性和更好的均匀性而非常合适。

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