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01 4月

Nanometer magnesium hydroxide for nanoscale materials

Nano magnesium hydroxide can also be used to save fertilizer? Recently in zhengzhou held a “nanometer magnesium hydroxide fertilizer application technology” scientific and technological achievements appraisal meeting, nanometer magnesium hydroxide fertilizer synergist recognized by experts, experts agree that the technology has obvious economic benefits and social benefits. By zhao yufen academician, director of the national committee of xiamen university, south China agricultural university professor liao and henan academy of agricultural science and technology ke-gang sun researcher, deputy director of the [...]

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09 3月

Application and prospect of boron nitride nanomaterials

The purpose of preparation and characterization of boron nitride nanomaterials is to improve the properties of traditional boron nitride materials, give full play to their various effects at the nanoscale level, achieve expected excellent properties and expand new application fields. 1, boron nitride coating has obvious chemical inertia at high temperature, so that boron nitride coating can be used to protect aluminum, magnesium, zinc alloy and other materials from high temperature oxidation. When coated with refractory or ceramic ware, [...]

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03 3月

Hafnium carbide ceramic material additive

At present, the method of synthesis of hafnium carbide at home and abroad is not much reported, the original method, generally need to be above 1900℃ to react, high energy consumption, high requirements for equipment, and grow out of the particle size, need to use other methods to reduce the reaction temperature. (2) Liquid phase precursor conversion method. Wang Yanbin et al. used HfoCl2, HCl, HNO3, n-propanol, isopropanol, ethanol, acetyl and other HFC powders with sizes ranging from tens [...]

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09 2月

Application of praseodymium fluoride

Praseodymium metal (PR) material is one of the products of light rare earth metals. Because of its unique physical and chemical properties, it has been widely used in the fields of rare earth permanent magnets, hydrogen storage materials, non-ferrous metals and alloys, ignition alloys, steel and iron, and has a promising prospect. In the middle of the 1950s, China began to develop metal praseodymium. In the 1960s, the metal gradually went into industrial production, and a small quantity of [...]

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05 12月

Production methods of holmium oxide and erbium oxide

Although the current use of holmium and erbium is still limited, some are equal to people’s further development, but it is certain that, with the development of science and technology, the application of holmium and erbium will be more and more widely, more and more people’s attention. At present, an important reason restricting the application of holmium and erbium is that it is very difficult to separate and purify the holmium and erbium, and the purification process is complex [...]

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27 11月

Application and prospect of molybdenum carbide in electrocatalytic hydrogen production

With the depletion of petroleum, coal and other traditional fossil energy and the worsening of environmental problems, the traditional energy structure system based on fossil energy is facing unprecedented crisis and challenge. Hydrogen, with its high energy density, excellent combustion performance, clean and pollution-free, is the best alternative to green energy from traditional fossil energy. However, the utilization of hydrogen energy depends on the development of hydrogen production technology to a large extent. At present, industrial hydrogen production technology [...]

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21 11月

The invention relates to a preparation method of nano-scale neodymium oxide lubricating oil additive

Lubricating oil is a common lubricating material, which can reduce equipment wear and tear, prolong equipment service life and reduce maintenance cost. Lubricating oil is composed of different types of base oils and various additives with different properties, among which additives can make up for the deficiency in the performance of base oils, which is an important factor to improve the properties and quality of oil products. With the increasingly harsh working conditions of equipment and the strict requirements [...]

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30 9月

To verify the microstructure and properties of laser cladding tungsten carbide nanometer layer

In tungsten carbide, carbon atoms embedded in the gap of the tungsten metal lattice do not destroy the original metal lattice and form interstitial solid solution, so it is also called interstitial compound. Tungsten carbide can be prepared by heating a mixture of tungsten and carbon at high temperatures, and the presence of hydrogen or warp accelerates the reaction. If the oxygen-containing compound of tungsten is used for preparation, the product must eventually be vacuumed at 1500℃ to remove [...]

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23 9月

Preparation of nanometer tungsten carbide composite powder

Tungsten carbide is a black gray crystalline powder. Relative density 15.6(18/4℃), melting point 2600℃, boiling point 6000℃, Mohs hardness 9. Tungsten carbide insoluble in water, hydrochloric acid or sulfuric acid, soluble in nitric acid and hydrofluoric acid mixture. Tungsten carbide reacts strongly with fluorine at room temperature and is oxidized to tungsten oxide when heated in air. At 1550 ~ 1650℃, the metal tungsten powder can be directly combined with carbon black, or at 1150℃, the tungsten powder can [...]

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09 8月

Titanium suboxide Conductive ceramic electrode material (Ti4O7)

The titanium suboxide ceramic electrode material is produced by reducing high-purity titanium dioxide powder by hydrogen H2 at a high temperature of 1200 degrees. The main crystal phase is Ti4O7. The appearance of the product is blue-black flow dynamic powder. High conductivity of metal-like materials. Excellent chemical stability against acids and alkalis. Unique electrochemical performance. With high mechanical strength, it can be easily formed into electrode shapes such as plates, tubes, and rods. The outstanding physical property of titanium suboxide is that it has good electrical [...]

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