Is hexagonal boron nitride poisonous?

What is hexagonal boron nitride?

Hexagonal boron nitride (h-BN), also known as "black diamond", is an inorganic compound. Its chemical formula is B4C, and it is usually a gray-black powder.

Hexagonal boron nitride is one of the three hardest materials known (after diamond and cubic boron nitride) and is used in tank armor, bullet armor and many industrial products. Its Mohs hardness is about 9.5.

Hexagonal boron nitride has multiple advantages such as low density, high strength, high temperature stability and chemical stability. In structure, it is similar to graphite. Boron nitride can withstand temperatures exceeding 2,000°C, and depending on the grade, its dielectric strength is close to 1000 volts/mil. If you want to buy Hexagonal Boron Nitride BN powder in bulk, please feel free to send an inquiry to get the latest price.

How strong is hexagonal boron nitride?

Hexagonal boron nitride is the third known hard material in the world. Because of its high oxidation resistance at 800ºC, it has become the most ideal high-temperature wear-resistant material. There are mainly two key hardness indicators: Mohs hardness is about 9.5, and microhardness is about 55GPa-67GPa.

Is hexagonal boron nitride poisonous?

Boron carbide has certain toxicity and irritation, and long-term close contact requires certain protective measures. For example, avoid inhaling the dust and direct contact with the skin. However, as a commonly used protective material, boron carbide generally does not cause much harm to the human body.

Overview of Boron Nitride

Boron nitride industrial powder is a pure white ceramic material with a hexagonal crystal structure similar to graphite. Boron nitride can withstand temperatures exceeding 2000°C, and depending on the brand, its dielectric strength is close to 1000 volts/mil. Boron nitride is hot-it is pressed as a blank and can be easily processed into bars, bars, plates and even custom shapes.

Application of Boron Nitride

1. Metal forming release agent and metal drawing lubricant.

2. Special electrolytic and resistance materials under high temperature conditions.

3. High-temperature solid lubricants, extrusion anti-wear additives, ceramic composite materials production additives, refractory materials and antioxidant additives, especially additives resistant to molten metal corrosion, heat-resistant additives, high-temperature insulating materials.

4. Heat-sealing desiccant for transistors and additives for polymers such as plastic resins.

5. Compressed into various shapes of boron nitride products, which can be used as high temperature, high pressure, insulation and heat dissipation parts.

6. Aerospace thermal shielding materials.

7. With the participation of a catalyst, it can be converted into cubic boron nitride with hardness like diamond after high temperature and high pressure treatment.

8. The structural materials of the atomic reactor.

9. Airplane and rocket engine nozzles.

10. High-voltage and high-frequency electrical insulators and plasma arc insulators.

11. Packaging materials to prevent neutron radiation.

12. The superhard materials made by boron nitride processing can be made into high-speed tools and drill bits for geological exploration and oil drilling.

13. Metallurgical continuous casting steel isolation ring, amorphous iron launder, continuous casting aluminum mold release agent (various optical glass mold release agents)

14. Production of evaporation boats for various capacitor film aluminum plating, picture tube aluminum plating, display aluminum plating, etc.

15. All kinds of fresh-keeping aluminum-plated packaging bags, etc.

16. Various laser anti-counterfeiting aluminum plating, brand hot stamping materials, various cigarette labels, beer labels, packaging boxes, cigarette packaging boxes, etc.

17. The lipstick filler used in cosmetics is non-toxic, lubricious and shiny.

In terms of optical applications, due to the high hardness of the c-BN film, it has high transmittance in the entire wavelength range from ultraviolet (about 200nm) to far-infrared. It is suitable as a surface coating for some optical components, especially as zinc selenide ( Coating of window materials such as ZnSe) and zinc sulfide (ZnS). In addition, it has good thermal shock resistance and hardness, and is expected to become an ideal window material for high-power lasers and lasers. detector.

Boron Nitride Price:

The price of boron nitride will vary randomly with the production cost, transportation cost, international situation, exchange rate and supply and demand in the boron nitride market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for boron nitride, please feel free to send an inquiry to get the latest price of boron nitride.

Boron Nitride Supplier:

As a global boron nitride supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium nitride, silicon nitride, titanium nitride, etc.) high-purity targets, functional ceramics and structural devices, and provides OEM services.