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  • 01

    Mar

    Effect of nano-SiO2 on properties of cement-based materials

    The addition of nano SiO2 powder as an admixture to cement-based materials can improve many of the properties of cement-based materials. A large number of research results show that adding appropriate amount of SiO2 nanopowder to cement-based materials, due to the volcanic ash effect of nano SiO2 particle, nucleation effect and micro-filling effect, can significantly improve the early strength of ...
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  • 04

    Mar

    B-SIC Cubic Silicon Carbide Powder Introduction and Application

    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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  • 11

    Mar

    What is the difference between Alpha SiC and Beta SiC in silicon carbide powder?

    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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  • 11

    Apr

    Nano titanium diboride powder can be used to reinforce nickel-based alloys

    Titanium diboride nanopowder has the characteristics of high melting point and high hardness, and is resistant to molten metal corrosion, and is often used for preparing composite ceramics. A*STAR (Agency for Science, Technology and Reseach), Singapore's largest research institute, has successfully improved the strength and thermal properties of materials by adding titanium diboride to nickel-base...
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  • 11

    Apr

    The role of nano SiC powder deposited on the surface of metal alloy parts

    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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  • 11

    Apr

    Brief Description of the Properties of Nano Aluminum Nitride Powder Filled Polytetrafluoroethylene Composites

    The aluminum nitride nanopowder has the characteristics of high specific surface area, high hardness, high thermal conductivity and high insulation. It is a diamond-like nitride, stable to 2200 ° C, high room temperature strength, good compatibility with the substrate interface, and can improve compounding. Thermal and dielectric properties, mechanical properties and wear resistance of the materia...
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  • 10

    May

    Foreign universities want to use nano silicon powder materials to create new lithium batteries

    New energy vehicles, communications and portable devices require lithium-ion batteries for high capacity and high endurance. Lithium-ion batteries urgently need to be updated to increase capacity, cycle and size. At present, the silicon-carbon negative electrode of lithium battery is all kinds of carbon materials mainly composed of graphite, and its theoretical capacity is only 372 mAh/g. In pract...
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  • 17

    May

    Hydroxyapatite - the new century bone

    Due to the influence of diseases, aging, frequent traffic accidents and other factors, the number of cases of bone injury has increased year by year. According to statistics, there are 3 million orthopedic cases every year in China, and the demand for bone substitute materials is increasing. In recent years, bone substitute materials represented by hydroxyapatite have gradually become the darling ...
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  • 29

    May

    Research and application of aluminum nitride and aluminum nitride ceramics

    Aluminum nitride (AlN) is a new type of ceramic material with excellent comprehensive properties. It has excellent thermal conductivity, reliable electrical insulation, low dielectric constant and dielectric loss, non-toxicity and thermal expansion coefficient matching with silicon. The excellent characteristics of the series are considered to be ideal materials for a new generation of high-concen...
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  • 10

    Jun

    Advantages and Typical Applications of Yttrium Oxide Stabilized Zirconia YSZ

    First, the advantages of yttria stabilized zirconia YSZ Common zirconia stabilizers are usually alkaline earth oxides or rare earth oxides such as cerium oxide, cerium oxide, calcium oxide, magnesium oxide. The stability 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 the...
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  • 17

    Jun

    What kind of substance is nano gold powder, and what effect does it have on human skin ?

    Nano gold powder refers to tiny particles of gold with a diameter of 1 to 100 nm. It has high electron density, dielectric properties and catalytic properties, and can bind to a variety of biomacromolecules without affecting its biological activity. Preparation of gold nanoparticles with different particle sizes by chloroauric acid reduction. The effect on human skin is as follows: By massaging th...
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  • 26

    Jun

    Chemical reaction equation for silicon nitride Si3N4

    Silicon nitride Si3N4 is a non-oxide high temperature ceramic structural material. Powdered Si3N4 can be prepared by reacting a mixture of SiCl4 vapor and NH3 gas. Powdered Si3N4 is unstable to air and water. Powdered Si3N4 can form a pungent odor, a gas commonly used as a refrigerant and a poorly soluble acid when it is in contact with water. Powdered Si3N4 can generate N2 and contact with air. a...
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