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Hexagonal Boron Nitride Powder

What Is Hexagonal Boron Nitride Powder?

 

Hexagonal boron nitride powder is a popular material because of its lubricious properties, chemical inertness, excellent thermal stability and mechinical strength. Both sample size and bulk quantity are available now and contact us today for a quote!A nanopowder composed of hexagonal particles of boron nitride of approximately 100nm diameter, this material appears as an extremely fine powder.
Notable for its hardness, thermal properties, electrical properties, and general versatility, boron nitride nanopowders have been the subject of extensive industrial usage and research. Current and theoretical applications run the gamut from lubricant additive to fuel cell conductor.

 

Advantages of Hexagonal Boron Nitride Powder

 

High thermal stability

Stable up to approximately 3000°C in the inert atmosphere.

High corrosion resistance

Stable against most organic solvents and corrosive chemicals, and unwettable by most molten metals and glasses.

High electrical characteristics

Has high electrical insulation and voltage resistance at high temperature and no changes in permittivity and dielectric loss up to high-frequency area.

Lubricity and mold-release efficiency

Friction coefficient does not change up to considerably high temperature in nitrogen atomosphere, which enables use up to approximately 950°C in the air.

High thermal conductivity and high heat radiation

High thermal conductivity and high heat radiation can be applied to various kind of heat radiators

Why Choose Us

Rich experience

We have rich experience in special ceramics industry and metalizing applications.

 

 

High technology

It is a high-tech enterprise specializing in development and production of ceramic evaporation boats and boron nitride products.

Convenience location

Our company is located in zibo city，shandong province, it enjoys an advantageous geographical location and convenient transportation.

Market experiences

With years of market experiences, we have established long-term and stable cooperative relations with many domestic and abroad customers.

 

Application of Hexagonal Boron Nitride Powder
 

Superhard material industry
Used for the preparation of cubic boron nitride. Lithium-based or magnesium-based catalysts, can be converted into cubic boron nitride under ultra-high pressure and high temperature conditions.

 

Coating industry
HBN can make the metal or ceramic material have good surface lubricity and anti-sticking properties, and can prevent or reduce the chemical reaction between the material and the melt, and improve the life of the material. It can be used in all kinds of radiators, electronic parts to increase heat dissipation. And it's suitable for optoelectronic industry radiators, electronic parts cooling modules, power cooling modules, automotive radiators, oil coolers, transmission oil coolers, and other types of coolers.

 

Electronic materials industry
When used as a filler for high thermal conductivity materials, HBN has excellent heat resistance, good corrosion resistance, low thermal expansion coefficient and high heat rate. It is the most suitable thermal insulation material, which can improve the thermal conductivity of resin-based electronic components.

 

High-end cosmetics industry
When used as a high-end cosmetic filler, it can increase cosmetic adhesion and covering performance, and has a good greasy feel, making makeup products firm, easy to apply, easy to clean and remove, and harmless to the human body.

 

Lubricating material industry
As an additive for solid and liquid lubricating materials, it can improve fuel efficiency, the wear resistance of oil cylinders, and have a significant energy saving effect.

 

High-tech ceramic industry
Used to prepare HBN agglomerates.HBN agglomerates have high thermal conductivity, excellent high temperature performance, excellent electrical insulation and dielectric properties, and are often used to prepare high temperature and high pressure heat dissipation components, high temperature electrical insulation devices, crucibles and molds, as well as high permeability and high stability microwave antenna window and other components.

 

Hexagonal Boron Nitride Powder: An Easy Solution for Lubrication in Machines Experiencing Very High and Low Temperatures

 

A look into the features of boron nitride shows that it is basically a ceramic powder, one that is synthetic in nature. It is available in both solid and powdered forms. There are conditions under which you will need a dry lubricant that can withstand extremes of heat, and boron nitride suffices. It has a graphite-like laminar structure and a low coefficient of friction, so when it is applied to moving metal parts of machinery, they are able to easily slide against one another, thus running faster. This in turn enables the machine to perform better, so it is able to be more productive per day.

 

The easiest way to apply hexagonal boron nitride powder is by mixing it with an adhesive and then putting this mixture into a spray can. Through pneumatic air pressure, it can be applied over a large area, and once it covers the area in the form of a thin coating, it sticks strongly, making the surface stronger and more durable. When metal components are coated with it, boron nitride helps to increase their service life. Machine maintenance costs can be huge if machines are not lubricated with a lubricant that can tolerate the environment in which they function. In operating environments that experience extreme heat, it is best to use boron nitride to gain the required lubrication.

 

When the roughest surfaces are coated with this dry lubricant, they work even more smoothly, which is essential to eliminating frictional wear. By constantly lubricating with it, the surface is able to remain intact for a long period of time, which helps avoid replacement costs. This is a versatile dry lubricant when it comes to temperature fluctuations, as it is able to remain stable and provide lubrication at both high and low temperatures. Another interesting quality about it is that it has good resistance to high pressure, so it is able to lubricate even if there is a huge amount of pressure in the working environment.

 

Production Method of Hexagonal Boron Nitride Powder
HBN Boron Nitride Powder
Hexagonal Boron Nitride Insulation And High Temperature Resistant
Hexagonal Boron Nitride Insulation And High Temperature Resistant
High Purity Boron Nitride Powder

Solid phase synthesis
This is the most commonly used method for hexagonal boron nitride powder. This method is low-cost, simple in process, and can be mass-produced. The disadvantages are that the calcination temperature is usually high, the particle size of the phase powder is usually coarse, the composition uniformity is poor, and the sintering performance is poor.

 

Precipitation and coprecipitation methods
First, a solution containing metal ions is formed, a precipitant is added, an OH substance or CO3 precipitate is formed, and then calcined into a phase. This method is an atomic-level reaction, which can obtain nano-micron boron nitride powder, but there is a serious agglomeration problem. This method can be mass-produced, but due to the long process flow, the yield is poor. In order to ensure that the ratio of the precipitate to the raw material is consistent, the stirring, temperature, pH, and concentration of the chemical reaction need to be carefully adjusted; and the precipitant should be carefully selected to keep the Ksp concentration of the precipitate consistent.

 

Spray pyrolysis method
First, a mixed solution containing metal ions is formed, and the solution is slowly introduced into a spray dryer, and then atomized into small droplets with high-pressure gas. At the same time, various heat sources such as high-temperature gas, flame, microwave, plasma, etc. are used to volatilize the water, acid or other solvents in the small droplets to make them into dry powder, and finally calcine them into phases. This method does not need to consider the precipitation ratio of metal ions like the precipitation method, and it is atomic-level mixing, and a powder with a correct stoichiometric ratio and fine particle size can be obtained at one time.

 

Sol-gel method
After forming a mixed solution containing metal ions, chelating agents such as citric acid are added to adjust the pH value and temperature, so that the metal ions undergo organic chemical and hydrolysis reactions to form a sol. The solvent is evaporated to dryness at low temperature, concentrated into a gel, and then heated and calcined to form boron nitride ceramic powder. This method can form nano-scale powders with uniform particle size and uniform composition. The biggest problem with this method is that the evaporation process of the solution is very slow. After a long period of solution treatment (several days), only a small amount of material can be obtained. Therefore, this method is not suitable for mass production.

 

Hydrothermal method
After forming a mixed solution containing metal ions, add a specific reagent to promote the reaction, adjust the pH value, put the mixture into a hydrothermal reaction vessel, completely seal it, and heat it at a low temperature (<250℃) for a period of time (1 to 24 hours). A three-phase coexistence state of water is formed in the reaction vessel, and a pressure of tens of atmospheres is generated at the same time, and a complex reaction occurs. This method can form nano-scale uniform agglomerated particles, and can also form particles in the shape of long strips, flowers, flat shapes, etc.; but because the capacity of each reactor is limited (hundreds of cc), the amount of powder that can be produced is also very limited, and due to the high temperature and high pressure generated in the reactor, there is a possibility of explosion.

 

Hexagonal Boron Nitride Powder Market Dynamics

 

Implementation of stringent regulations
The market demand for hexagonal-boron nitride powder (h-bn) is expected to rise over the forecast period as a result of the implementation of strict government laws about infrastructure or construction. The pradhan mantri awas yojana (urban) mission, established by the indian government on june 25, 2015, aims to provide homes for everyone in urban areas by the year 2022. The mission provides central assistance to the implementing agencies via states/union territories (uts) and central nodal agencies (cnas) in order to provide homes to all eligible families and beneficiaries in response to the verified housing need of around 1.12 crore. Hexagonal-boron nitride powder (h-bn) is anticipated to rise in the forecast year as a result of the market demand for paints and coatings.

 

Increased requirement of electrical insulation segment
The consumer electronics business has been expanding quickly globally over the years due to the continually rising demand for mobile phones, portable computers, gaming consoles, and other personal electronic gadgets. For a number of electronic applications, such as 2d hbn-based substrates, gate dielectrics for graphene transistors and interconnects, and electronic packaging insulators, the 2d hbn has been regarded as the ideal material. Emerging applications, including deep uv (duv) optoelectronics, electron emitters, and neutron detectors also seem to favour it as their preferred material. Consequently, the demand for hexagonal boron nitride is anticipated to increase over the projected period along with the expansion of the electrical and electronics sector, and the electrical insulation segment is anticipated to lead the market growth.

 

High demand across end users
Throughout the forecast period, the beauty and personal care industry will continue to be a significant end-user of hexagonal boron nitride. Due to its adaptive qualities, the material is used for several additional industrial processes, including the production of electrical goods and metal processing.

 

Beneficial properties of hexagonal boron nitride powder
The market for hexagonal boron nitride powder is expected to grow as a result of notable qualities including chemical inertness, high thermal conductivity, high electrical resistance, and lubricity. These characteristics are crucial in the market expansion for hexagonal boron nitride features. They raise its competitiveness against its substitute, graphite, driving rising demand for hexagonal boron nitride powder.

 

FAQ

Q: What is the difference between cubic and hexagonal boron nitride?

A: Both h-BN and c-BN exhibit high chemical and thermal stability. But h-BN is more stable than c-BN even without deteriorating at temperatures as high as 1000°C (in air), 1400°C (in vacuum), and 2850°C (in inert atmosphere).

Q: What is the difference between graphite and hexagonal boron nitride?

A: While graphite has nonpolar homonuclear C–C intralayer bonds, h-BN presents highly polar B–N bonds resulting in different optimal stacking modes of the two materials in the bulk form.

Q: What is hexagonal boron nitride in cosmetics?

A: It has a white, soft, and powdery appearance, similar to talc. Boron Nitride provides a smooth, silky texture to cosmetic formulations and helps to improve their spreadability and blendability. It can act as a mattifying agent, reducing shine and oiliness on the skin.

Q: How do you make hexagonal boron nitride?

A: Borax – Urea Method. The borax-urea method is a traditional and cost-effective approach for synthesizing h-BN powder. The boron hydride is mixed with urea (ammonium chloride) and heated in an ammonia gas stream to obtain boron nitride.

Q: What is the use of hexagonal boron nitride powder?

A: An hBN coating is used in refractory molds for glass forming and Titanium forming. It is used in the glass manufacturing process due to its non-wetting properties. The powder due to its self-lubricating properties can be mixed with ceramics, alloys, resins, plastics, rubbers and more.

Q: How strong is hexagonal boron nitride?

A: Its stability in an oxygen atmosphere is poor, and its use temperature is below 1000°C. Hexagonal boron nitride has a low expansion coefficient and high thermal conductivity, so it has excellent thermal shock resistance, and it will not be damaged even after hundreds of cycles at 1200-20°C.

Q: Why is hexagonal boron nitride an lubricant?

A: The hBN particles reduce friction due to their low shear resistance and improve wear resistance by interacting with sliding surfaces and forming low-friction boundary films. On the atomic level, the layers of hBN are aligned along the direction of sliding motion, shearing easily to provide low friction levels.

Q: What is the composition of hexagonal boron nitride?

A: Hexagonal boron nitride (h-BN), a layered material isostructural to graphite, has similar exotic properties like graphite. With single atom thick and alternating boron and nitrogen atoms in its atomic structure, h-BN is an insulator with band gap ~ 5.9 eV.

Q: Who manufactures hexagonal boron nitride?

A: Boron Nitride Powder & Suspension - Supervac Industries LLP
Supervac Industries (India) offers various grades of hexagonal boron nitride in powder form as well as in aqueous suspension/colloidal form.

Q: Is hexagonal boron nitride toxic?

A: Preliminary investigations have been performed to understand the biocompatibility of BN nanomaterials. Most studies focused on BN nanotubes and have indicated that the toxicity of BN nanotubes to mammalian cells is low [12], [25], [9].

Q: Is hexagonal boron nitride conductive?

A: Abstract. Hexagonal boron nitride (h-BN) has been predicted to exhibit an in-plane thermal conductivity as high as ~ 550 W m−1 K−1 at room temperature, making it a promising thermal management material.

Q: Is hexagonal boron nitride hydrophobic?

A: First, hexagonal boron nitride (hBN), which is an isoelectric analog of graphene with high thermal conductivity, chemical stability and hydrophobicity31,32,33,34, is exfoliated to a few layers by probe sonication in water solution, thus obtaining a stable few-layer hBN dispersion.

Q: What is the thickness of hexagonal boron nitride?

A: Figure 1(a-l) are optical microscopy images of SiO2-supported hBN flakes with thicknesses ranging from 3.6 nm to 398.4 nm. As observed in other layered materials such as graphene and black

Q: What is the correct statement about hexagonal boron nitride?

A: Hence, the CORRECT statement about hexagonal boron nitride is it is reactive towards Fluorine.

Q: What is the thermal stability of hexagonal boron nitride?

A: H-BN nanoplatelets can withstand temperatures up to ∼1000 °C under air-flow. Oxidation occurs between 1000 and 1200 °C with a 30% excess mass due to boron oxide formation.

Q: What are the risks of boron nitride?

A: Symptoms of Exposure: May cause irritation to eyes and abraded skin. May cause respiratory irritation if inhaled. Acute and Chronic Effects: Boron Compounds: Only a few human studies have been conducted to assess health effects associated with exposure to boron compounds.

Q: What is the purpose of boron nitride?

A: Different applications are possible through exploiting these properties. BN nanostructures are used for thermal conductivity enhancement, mechanical strength enhancement, insulating coatings, oxidation and corrosion-resistant coatings, electrical circuits, water treatment, and hydrogen storage.

Q: How is boron nitride powder made?

A: Commonly known as "white graphite," hexagonal BN (hBN) is a man-made ceramic produced by reacting boric acid or boron oxide and nitrogen at temperatures above 1600°C.

Q: What is the application of hexagonal boron nitride?

A: Unlike graphite, hBN is both insulating and transparent, making it an ideal material for isolating devices from the environment and acting as a waveguide. As a result, hBN has found extensive applications in optical devices, electronic devices, and quantum photonic devices.

Q: Is CBN harder than diamond?

A: Diamond, while harder than CBN, has a much lower thermal tolerance, making CBN more suitable for high-temperature grinding applications.

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