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    Jul
    5

    Silicon Carbide (SiC) Micron and Nano Powder

    by Admin in Blog


    Silicon carbide, chemical formula SiC, is a covalent bond material. C and Si belong to the same family, all have a tetravalent bond, while Si also has metal properties. Its structure has the mesh shape and body shape and has high strength in nature, so the properties of silicon carbide material include high-temperature strength, wear-resistant, corrosion-resistant, high thermal conductivity, and high insulation. The structure determines the performance, and the higher the performance, the finer the microstructure of the silicon carbide material is required, so the preparation method becomes the key to the acquisition of the high-performance silicon carbide material. Silicon Carbide has applications in a variety of sectors.

    Two kinds of silicon carbide powders are discussed below.

    -Silicon carbide Micron Powder

    -Silicon carbide Nano Powder

     

    The detailed discussion about SiC Micron Powder and Nanopowder is given below:

    Silicon carbide micron powder

    Silicon carbide (SiC) micron powder is widely used as abrasives or fillers in ceramic refining abrasives, resin polishing wheels, and diamond polishing wheels. Due to its excellent properties such as high hardness, high strength, outstanding oxidation resistance and wear resistance, SiC micron powder is also widely used in non-grinding applications such as refractory materials, engineering ceramics, and structural materials. At present, SiC has become the main raw material for the development of modern defense, modern industry, and high-tech. Due to the large surface area and fine agglomeration of fine-grained (10μm fine) SiC micron powder, not only the dispensability and fluidity of the ceramic grinding tool cannot meet the molding process performance requirements, but also in the production of resin polishing wheel, The compatibility of the bonding agent is also poor. Therefore, the strength of the abrasive article is low, the premature sand removal, the polishing quality, and the durability are not satisfactory, which seriously affects the quality.

    Characteristics and Structure of Silicon Micron Powder

    Silicon carbide micron powder is not the best for different customers. Only the relative stability is good. Different customers have different purity and grain shape requirements for the micron powder raw materials due to different production methods and different formulations. Under the premise of the same formula, if the micronized raw materials are in batches. The difference in purity, strength, and grain shape in the second time will directly affect the qualification rate and quality of the customer's products, and if the products after the whole batch are unqualified, it may cause serious losses.

     

    The invention relates to the field of silicon carbide micron powder processing equipment, in particular to a processing device for high-iron silicon carbide micron powder and a using method thereof. The utility model comprises a box body without an end cover, wherein a stirring device and a liquid removing the device is present in the box body, and an electric heating tube is arranged on a lower end surface of the bottom plate of the box body, and a temperature sensor is arranged in the box body.

    A normal-pressure sintered ceramic-grade silicon carbide micron powder requires an average particle size of D50<0.8μm. The content of impurities such as iron, carbon, and silicon in the raw materials is strict. The mineral content can be up to standard by mineral processing and chemical treatment. Before the grinding, the free carbon is separated by flotation, and more than 70% of the iron mineral can be removed by the pulsating high gradient magnetic separator.