First, boron nitride has a high melting point and high hardness, and it is a white ceramic material. Boron nitride has excellent thermal stability and can remain stable at high temperatures without decomposition or deterioration. Its thermal conductivity is also very high, so it is widely used in the manufacture of high-temperature stoves and lining materials for high-temperature stoves, which can help reduce the loss of heat and increase the efficiency of thermal energy.
Secondly, boron nitride has good chemical inertness and corrosion resistance. Most chemicals do not erode it, so it is widely used in the manufacture of parts for chemical equipment and lining materials for high-temperature stoves. In addition, boron nitride also has excellent electrical insulation and wear resistance, so it is also widely used in electronic equipment and automotive parts.
In addition, boron nitride has some other unique properties. For example, it has good light transmission and insulation, so it is widely used in the manufacture of high-temperature furnace lining materials and electronic equipment insulation materials. It also has excellent lubrication performance and low coefficient of thermal expansion, so it is also widely used in fields such as automotive parts and spacecraft.
Application of Boron Nitride Powder：
First of all, boron nitride has been widely used in the field of high-temperature stoves. Because of its high melting point and excellent thermal stability, boron nitride is widely used in the manufacture of high-temperature furnace lining materials. It is able to withstand extreme temperatures and chemical corrosion. It isn't easy to decompose or weaken, so that it can ensure the efficient operation of high-temperature stoves and the stability of products.
Secondly, boron nitride has also been widely used in the field of electronic equipment. It has excellent electrical insulation and wear resistance, so it has been widely used in the manufacturing of electronic equipment parts. For example, it can be used as an insulating material or wear-resistant material in electronic equipment to safeguard the functioning of electronic equipment when it is subjected to high pressure and high temperatures.
In addition, boron nitride has also been widely used in the field of automotive parts. It has excellent lubrication performance and low coefficient of thermal expansion, so it has been widely used in the manufacturing of automotive parts. For example, it can be used as a manufacturing material for parts such as automotive bearings and gears, improving the wear resistance and service life of parts.
Finally, boron nitride has been widely used in the field of spacecraft. Because of its high melting point and high hardness, boron nitride can withstand high temperatures and pressures, so it has been widely used in spacecraft manufacturing. For example, it can be used as a high-temperature material and a wear-resistant material for spacecraft to protect the normal operation of spacecraft under high temperature and high-pressure conditions.
Production Method of Boron Nitride Powder：
The direct synthesis method is the direct synthesis of boron nitride from nitrogen and boron under high temperature and pressure. The reaction temperature of this method is usually between 1800-2000℃, the reaction pressure is 10-15kbar, and the raw materials used are pure elemental boron and nitrogen. At high temperatures and high pressure, nitrogen and boron directly react to produce boron nitride. The advantage of this method is that the reaction temperature and pressure are relatively low; the disadvantage is the need to use high-purity nitrogen and boron powder raw materials.
Pyrolysis is the decomposition of boron-containing compounds into boron nitride and hydrogen at high temperatures. The reaction temperature of this method is usually between 1800-2200℃, and the raw materials used are boron-containing compounds, such as boron trichloride and eborane. At high temperatures, boron-containing compounds are decomposed into boron nitride, hydrogen, and chloride products, and pure boron nitride can be obtained after removing impurities such as chloride in the products. The advantage of this method is that boron-containing compounds are used as raw materials, which can reduce the cost. Still, the disadvantage is that the reaction temperature and pressure are high.
Nitriding is the infiltration of nitrogen into a metal or alloy to replace some of the atoms in the metal or alloy with nitrogen atoms to form nitrides. The reaction temperature of this method is usually between 750-1000 ° C, and the raw material used is metal or alloy. In the nitriding process, nitrogen atoms penetrate the metal or alloy to form nitride. The advantage of this method is that the content and properties of nitride can be controlled by controlling the nitride time and temperature, but the disadvantage is that the cost is high.
Ion implantation method
The ion implantation method is to inject an ion beam containing nitrogen and boron elements into a solid material through ion beam injection energy to make the surface of the solid material local heating and melt; at the same time, injected ions are fixed in the molten solid material, to form a dense boron nitride coating. The reaction temperature of this method is usually between 500 and 1000℃, and the raw material used is a boron nitride ion beam. In the ion implantation process, the solid surface is heated to a molten state, and the ion beam is injected to form a coating. The advantage of this method is that the thickness and properties of the coating can be controlled by controlling the ion implantation energy and dose. Still, the disadvantage is that the cost is higher.
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