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The specific surface area is the surface area (㎡/g) of the substance per unit mass. It is one of the most important physical properties of ultra-fine powder materials, especially nano-powder materials. It is used to evaluate their activity, adsorption, catalysis and other properties. important physical properties. Therefore, in the research, manufacture and application of various ultrafine powder ...
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Fisher's method is a relatively simple particle size measurement method, which is based on measuring the speed of air passing through the powder accumulation, and then obtaining the average particle size of the powder according to the Kozeny-Carman formula. However, the Fisher method is a relative measurement method, which cannot accurately determine the true particle size of the powder, and is on...
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This is a method of synthesizing boron nitride by reacting borax and ammonium chloride as the main raw materials in an ammonia atmosphere. The two raw materials should be dehydrated and recrystallized separately before participating in the reaction. Borax is best dehydrated in a vacuum at 200~400°C. The recrystallization of ammonium chloride is to dissolve it into a saturated solution, filter to r...
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The synthesis of boron nitride by nitridation with boron anhydride (B4O3) is one of the important methods for industrial production of boron nitride. Due to the low melting point of boron anhydride (glass state is 294°C, crystalline state is 450-600°C), it becomes a high-viscosity melt at the nitriding temperature, which hinders the flow of ammonia and makes the reaction slow and extremely incompl...
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Boron carbide, also known as black diamond, is an inorganic substance with a chemical formula of B4C, usually a gray-black micropowder. It is one of the three hardest known materials (after diamond and cubic boron nitride) and is used in tank armor, body armor and many industrial applications. Several preparation methods of nano-boron carbide (supply 100-200nm): 1. Carbothermal reduction method Be...
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The preparation methods of CNTS loaded metal nanoparticles are mainly physical preparation and chemical preparation methods. The most commonly used is chemical preparation method. The chemical preparation method is generally uniformly loaded with metal nanoparticles on the carrier CNTS. The general process of chemical preparation is that the metal front drive is restored to atoms, and the metal at...
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In pigments, nano sized iron oxide is also known as transparent iron oxide (through iron) . The so-called transparency, not specifically refers to the particles themselves macroscopically transparent, but refers to the pigment particles dispersed in the organic phase to make a film (or oil film) , when the light irradiation on the film, if the original direction does not change basically through t...
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1.The application of nanometer iron oxide in ink material, The transparent iron yellow can be used for the coating of the outside of the can, the nanometer iron oxide red ink is red-gold color, it is especially suitable for the inside of the can, and the transparent iron red can resist the high temperature of 300 ° C, is a rare pigment in ink treasures. In order to improve the printing quality of ...
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Nano metal powders have broad application prospects in fields such as electronics, magnetic materials, automotive industry, military industry, and powder metallurgy. For example, nano materials such as iron, aluminum, zinc, titanium, nickel, chromium, tantalum, cobalt, and so on have been produced. The most important factor in achieving optimal performance of nanometallic powders is the uniform di...
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The surface coating treatment of ultrafine powder is a very useful technology, which can improve the flow performance of the powder, reduce dust flying, improve stability and moisture resistance, and enhance the solubility of the powder. The commonly used surface coating treatment methods for ultrafine powders include the following: Wet surface treatment: The coating material is added in liquid fo...
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With the continuous progress of technology, the application of thermal conductive nanomaterials in modern industry is becoming increasingly widespread. From electronic devices to the automotive industry, their use has become an industry standard in today's high-tech field. As a company specializing in the production of thermal conductive nanomaterials, Dongguan SAT NANO understands the importance ...
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Metal nanoparticles are a widely used material that can be applied in various fields, such as medicine, electronics, energy, and the environment. They have extremely small size and high surface area, which can enhance the performance of many materials. However, the surface of metal nanoparticles is often very active and easily reacts with the surrounding environment, so a passivation layer is need...
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