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1)Silicon carbide whiskers should be pre-dispersed as much as possible before use. They should be mechanically and ultrasonically dispersed with water, ethanol, etc., and then mixed with the matrix material. 2) The amount of silicon carbide whiskers added to the material is not as high as possible, and there is usually an optimum value. Ordinary ceramics are generally added in an amount of 1-10%. ...
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First, powder materials are the key to 3D printing ceramic technology Additive manufacturing (3D printing) is known as the third industrial revolution. For ceramic materials, the properties of raw material powders (such as purity, particle size and distribution, particle morphology, etc.) have a direct impact on the performance of ceramics. . Ideally, the components are characterized by fine contr...
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Cubic silicon carbide, Beta SiC, is a synthetic high-performance material (only a small amount of high-purity cubic silicon carbide exists in nature). It is called "cube" because its structure belongs to the cubic system (diamond crystal). This structure also determines its own superior physical and chemical properties. B-SiC has a Mohs hardness range of 9.5 to 9.75, which is close to the most Moh...
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Pure silicon carbide powder is a colorless, transparent crystal. Industrial silicon carbide is light yellow, green, blue or even black due to the type and content of impurities contained in it. The transparency varies with its purity. The crystal structure of silicon carbide is divided into hexagonal or rhombohedral α-SiC and cubic β-SiC (called cubic silicon carbide). Since α-SiC constitutes...
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The silicon carbide nanopowder has high purity, small particle size distribution range and high specific surface area; nano-silicon carbide has stable chemical properties, high thermal conductivity, small thermal expansion coefficient, high hardness and Mohs hardness of 9.5. Nano silicon carbide wear-resistant, high temperature resistant, corrosion resistant, acid and alkali resistant solvents. 1....
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Since ultrafine powder has surface effect, small size effect, quantum effect and macroscopic quantum tunneling effect, it has many special properties in catalytic, optical, magnetic and mechanical properties compared with crystalline materials of the same composition. There are many important applications in the fields of medicine, microelectronics, and nuclear technology. "Plasma milling" refers ...
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The purpose of surface modification of ultrafine powder is: 1. In order to improve or change the dispersibility of powder particles; 2. Improve durability, such as resistance, light resistance, heat resistance, weather resistance, etc.; 3. Improve particle surface activity; Adding new physical, chemical and mechanical properties and new functions to the surface of the particles to increase the add...
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Silicon carbide whiskers are a kind of single-crystal fiber with a certain length-to-diameter ratio, which has very good high temperature resistance and high strength. It is mainly used in toughening applications where high temperature and high strength applications are required. Such as: aerospace materials, high-speed cutting tools. At present, it has a very high performance-price ratio. Silicon...
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Preparation method and introduction of nano silicon carbide powder infrared radiation coating 1.1 Ingredients Powder radiant mixture: 40 to 80 parts by weight of nano SiC (SiC) powder raw material, and zirconia (ZrO2) powder raw material 5 to 30 based on the weight fraction of (D50 is 40 nm, β phase) nano SiC powder raw material. 5 parts by weight or less of chromium oxide (Cr2O3) powder raw mater...
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Boron carbide chemical formula B4C. Glossy black crystals with a relative density of 2.52, a melting point of 2350 ° C, and a boiling point above 3500 ° C. Chemically stable, insoluble in water and various acids, soluble in molten alkali. Harder than diamond but higher than silicon carbide, Mohs hardness is 9.3. High thermal neutron capture ability, wear resistance, and semiconductor conductivity....
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Particle size D 0.1 ～ 2.5μm, length 10-50um, purity 99+, gray-green. Silicon carbide whisker is a kind of high-strength whisker-like (one-dimensional) single crystal with many excellent mechanical properties such as high strength and high modulus. Mainly used in ceramics, high-temperature components in the aerospace field, main strong bearing blocks, large mud pumps, etc. Physical characteristics:...
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Boron carbide, also known as black diamond, has a molecular formula of B₄C, usually grayish black powder. It is one of the three hardest materials known (the other two are diamond, cubic phase boron nitride), used in tanker armor, body armor, and many industrial applications. Its Mohs hardness is 9.3. Hard black shiny crystals. Harder than industrial diamond, but higher than silicon carbide. Compa...
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