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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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Titanium is a chemical element, chemical symbol Ti, atomic number 22, located in the fourth cycle of the chemical periodic table, group IVB. It is a silver-white transition metal characterized by light weight, high strength, metallic luster and resistance to wet chlorine gas. The most common compound of titanium is titanium dioxide, which can be used to make white pigments. In the past, people use...
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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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Tungsten carbide powder (WC) is the main raw material for the production of cemented carbide, chemical formula WC. The full name is Wolfram Carbide. Tungsten carbide powder is a black hexagonal crystal with metallic luster, hardness similar to diamond, and a good conductor of electricity and heat. The melting point is 2870 ° C, the boiling point is 6000 ° C, and the relative density is 15.63 (18 °...
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Efficacy of nano silver: With its properties of inhibiting bacterial protein synthesis, silver ions achieve the purpose of inhibiting bacteria and effectively prevent itching caused by bacteria. Nano silver dipsersion material characteristics: 1.Broad spectrum antibacterial Nano-silver acts on cell membrane proteins, which can directly destroy the binding of bacterial cell membranes to oxygen meta...
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Nano-scale silicon carbide has the following characteristics: 1. Its microhardness is 2840 ～ 3320kg / mm², its hardness is between corundum and diamond, and its mechanical strength is higher than corundum. 2. It has a strong ability to absorb infrared waves, can be used as infrared absorbing and transmitting materials, made into functional films or fibers, and can also be used for polishing and gr...
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Product specification of nano copper powder: 1. Color: red 2. Particle size: 20 nm, 50 nm, 100 nm 3. Purity >99.5% 4. Dispersion: No hard agglomeration. 1. Antibacterial effect of copper nanoparticle : antibacterial textiles containing nano copper powder with a mass ratio of 6/1000 against red trichophyton fungi (main fungi of human skin diseases, including beriberi), Candida albicans fungi (ma...
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Boron carbide has a high neutron absorption capacity. The neutron capture cross-section is high and the capture energy spectrum is wide. The thermal cross-section of 10B is as high as 347 × 10-24 cm2, second only to a few elements such as gadolinium, samarium, and cadmium. At the same time, compared with pure elements B and Gd, B4C is low in cost, does not produce radioisotopes, has low secondary ...
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