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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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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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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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Because of its low density, good oxidation resistance, high temperature resistance and corrosion resistance, silicon carbide has promoted the development of silicon carbide in the field of brake pads. Silicon carbide composite material is a material that can meet the high temperature of 1650-1700 ℃. Adding silicon carbide powder in the production of brake pads can more effectively improve the stab...
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Silicon carbide whiskers are cubic whiskers and belong to the same crystal type as diamond. It is the whisker product with the highest hardness, the highest modulus, the highest tensile strength, and the highest heat-resistant temperature among the whiskers that have been synthesized. There are two forms of α type and β type, among which β type has better performance than α type. Type β has higher...
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1. Titanium carbide tool materials AL2O3-TIC ceramics is the earliest development of composite ceramic tool system. Hard particles of nano-titanium carbide with a mass fraction of 15-40% are dispersed in the matrix, which not only improves the hardness of the material, but also improves the fracture toughness of the material. The cutting performance of the composite AL2O3-TIC ceramic tool is much ...
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Black silicon carbide is made of quartz sand, petroleum coke and high-quality silica as the main raw materials, and is smelted at high temperature in a resistance furnace. The raw materials used in the manufacture of green silicon carbide, such as black silicon carbide, are roughly the same, and industrial salt is added as a reactant and accelerator to react in a resistance furnace. In terms of it...
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As a key member of non-metallic materials, ceramic materials have a large number of attractive properties, such as good mechanical and electrochemical properties, low thermal conductivity, dense and uniform structure, wear resistance and corrosion resistance, etc. The high specific stiffness, high specific strength and chemical inertness of ceramic materials in complex environments, and the low de...
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1 Zirconium carbide is used in cemented carbide Zirconium carbide is an important high-temperature structural material with high melting point, high strength and corrosion resistance. It can improve the strength and corrosion resistance of cemented carbide. Its excellent characteristics make it have a lot of application space in cemented carbide. Using zirconium carbide instead of expensive tantal...
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Under the situation of rapid development of science and technology, to prepare high-temperature, high-performance, new-type materials, the first thing to do is to solve the refractory materials needed in the preparation process. The characteristics of refractory materials are as follows: 1. Mechanical properties The elastic modulus of special refractory materials is large. Most have higher mechani...
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Silicon carbide whiskers are cubic whiskers and belong to the same crystal type as diamond. It is the whisker product with the highest hardness, the highest modulus, the highest tensile strength, and the highest heat-resistant temperature among the whiskers that have been synthesized. There are two forms of α type and β type, and the performance of β type is better than that of α type. Type β has ...
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1. The advantages of yttria stabilized zirconia YSZ Common zirconia stabilizers are usually alkaline earth oxides or rare earth oxides, such as yttrium oxide, cerium oxide, calcium oxide, and magnesium oxide. The essence of these stabilizers to stabilize zirconia is roughly similar, but the performance is different. In application, yttria-doped zirconia has good comprehensive properties, and is al...
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