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PRODOCT
High temperature boron nitride
High temperature boron nitride is a type of ceramic material that exhibits excellent thermal and chemical stability at high temperatures. It is commonly used as a coating or substrate material in high-temperature applications such as in furnaces, rocket engines, and gas turbines. High temperature boron nitride is also used as a mold release agent in the production of plastic and rubber parts, as it can withstand high temperatures without degrading or sticking to the material being molded. Additionally, high temperature boron nitride is often used in the electronics industry as a heat sink and insulator due to its excellent thermal conductivity and electrical insulation properties.
CAS NO. 10043-11-5
Manufactured byKuca
Other namesWhite graphene
AppearanceColorless crystals,white powder
Molecular formulaBN
Technical index
| Product Name: boron nitride | White powder |
| Inspection items | Inspection index |
| Boron nitride (BN) % | >99 |
| Free boron oxide % | <0.2 |
| iron % | <0.005 |
| calcium % | <0.005 |
| magnesium % | < ,0.005 |
| aluminum % | <0.006 |
| Average particle size um | 1um |
High temperature boron nitride
Characteristic
- High heat resistance: sublimates at 3000°C, its strength at 1800°C is twice that at room temperature, and it can be air-cooled from 1500°C to room temperature dozens of times without breaking. It does not soften at 2800°C in an inert gas.
- High thermal conductivity: the thermal compression product is 33W/M.K, which is the same as pure iron, and it has a larger thermal conductivity among ceramic materials above 530°C.
- Low coefficient of thermal expansion: the expansion coefficient of 2×10-6 is second only to quartz glass, which is smaller in ceramics. Coupled with its high thermal conductivity, it has good thermal shock resistance.
- Excellent electrical properties: good high-temperature insulation, 1014Ω-cm at 25°C, and can reach 103Ω-cm at 2000°C, which is a better high-temperature insulation material in ceramics. The breakdown voltage is 3KV/MV, the low dielectric loss is 2.5×10-4 at 108HZ, and the dielectric constant is 4. It can transmit microwaves and infrared rays.
- Good corrosion resistance: it does not react with general metals (iron, copper, aluminum, lead, etc.), rare earth metals, precious metals, semiconductor materials (germanium, silicon, potassium arsenide), glass, molten salts (crystal, fluoride, slag), inorganic acids, and bases.
- Low friction coefficient: U is 0.16, and does not increase at high temperatures. It has higher heat resistance than molybdenum disulfide and graphite. It can be used in an oxidizing atmosphere up to 900°C and in a vacuum up to 2000°C.
- High purity: its impurity content is less than 10PPM, while the content of boron is greater than 43.6%.
- Machinability: its hardness is Mohs 2, so it can be processed into high-precision parts and products using general machining methods.
Application
- Boron nitride is a material that is non-toxic, high-temperature-resistant, corrosion-resistant, highly conductive, highly insulating, and has excellent lubricating properties.
- It is both an electrical insulator and a thermal conductor, and is a special electrolytic and resistive material at high temperatures, high-voltage and high-frequency electricity, and plasma arc.
- It can be used as a solid-phase doping material for semiconductors, anti-oxidation or anti-water lubricants.
- It can be used as a high-temperature lubricant and a demoulding agent for models. Boron nitride powder can also be used as an anti-sticking agent for glass beads and a demoulding agent for glass and metal forming.
- Ultra-hard materials made from boron nitride can be used to make high-speed cutting tools and drill bits for geological exploration and oil drilling.
- It can be used as a structural material for atomic reactors, as a spray for aircraft and rocket engines, as a packaging material to prevent neutron radiation, and as a heat-shielding material in aerospace.
- It is non-toxic and harmless with good lubricity, and can be used as a filler for cosmetics.
- Under the participation of catalysts, it can be transformed into cubic boron nitride as hard as diamonds by high-temperature and high-pressure treatment.
- It is used as an evaporation boat for various capacitor thin film aluminum plating, image tube aluminum plating, display aluminum plating, etc.
- It is used as a heat-sealing desiccant for transistors and an additive for polymer materials such as plastic resins.
- It is used for various laser anti-counterfeiting aluminum plating, trademark hot stamping materials, cigarette labels, beer labels, packaging boxes, cigarette packaging aluminum plating, etc.
- It is added to silicon carbide rods to increase resistance strain.
- It is used as a coolant additive.