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Boron Nitride one end Closed Tube is a boron product with a wide range of applications. For it, the question that many people are very concerned about is whether hexagonal boron nitride is a conductor or an insulator?
In fact, hexagonal boron nitride (HBN) is a typical insulator, and the resistivity at room temperature can reach 1016-1018Ω.cm,even at 1000°C, the resistivity is still 104-106Ω.cm.
The insulating properties of hexagonal boron nitride (HBN) are very good, and the thermal conductivity is very good. Therefore, it is widely used in various electronic materials and plays the role of thermal conductivity and insulation.
The boron nitride ceramic crystal belongs to the hexagonal crystal system, its structure is similar to graphite, and its
properties have many similarities, so it is also called "white graphite".
It has good heat resistance, thermal stability, thermal conductivity, high temperature dielectric strength, and is an ideal heat dissipation material and high temperature insulating material.
Applications
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Boron Nitride Properties:
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Thermal Conductivity
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(40-50)W/m·k
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Thermal expansivity
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(6.5-7.5)*10-6 °C
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Resistivity
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>1012 Ω·m
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Puncture voltage
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(2.5-4.0)*106 /kv·m
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Dielectric constant
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3.8-4.3
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Bending strength
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>35mpa
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Compression strength
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>200mpa
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Density
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1.9-2.2 g/cm3
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Working Temperature
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Oxidizing Atmosphere
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850°C
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Vacuum and inertia
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2000°C
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Grade
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BN99
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CABN
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ALBN
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ZSBN
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ZABN
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SBN
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Compositions
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BN>98.5%
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BN>97.5%
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AlN+BN
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ZrO2+BN
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ZrO2+AlN+BN
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SiC+BN
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Binder
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B2O3
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CaB2O3
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AlBO3
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B2O3
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AlBO3
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AlBO3
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Density(g/cm3)
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1.95~2.0
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2.0~2.1
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2.6
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2.9~3.0
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3.2~3.3
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2.4~2.6
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25 Volume Resistivity(Ω·cm)
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>1014
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>1013
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>1014
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>1012
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>1012
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>1012
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Max. Service Temp. ()
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Oxygen
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900
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900
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900
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1000
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900
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900
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Inert Gas
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2400
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2400
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2100
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1800
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1800
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1700
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High Vacuum
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2200
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2200
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1900
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1800
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1800
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1700
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Three-point
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30
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70
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130
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120
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130
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91
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Flexural Strength(Mpa)
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Compressive Strength(Mpa)
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100
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100
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250
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280
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300
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300
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Coefficient of Thermal Expansion
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1.5
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2
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4.5
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5
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5
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4
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25~1000(10-6/K)
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Thermal Conductivity(W/mK)
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15
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20
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50
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20
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40
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40
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INNOVACERA is a professional high-tech enterprise, cooperate with Chinese University in advanced materials, many products are awarded as high-tech products and obtain patents.
Xiamen INNOVACERA engages in R&D, manufacturing and selling the products of advanced ceramic materials, including Alumina, Zirconia, Boron Nitride, Silicon Nitride, Machinable Glass Ceramic and other advanced materials. Through different manufacturing processes, we supply metallized ceramic components, alumina heater, ceramic pump components and other ceramic components as request.
FAQ
Q1. Do you offer samples?
A: Yes, we'll offer you samples if we have stock, but some will charge sample fee. Shipping cost will pay by customer.
Q2. What is your terms of payment?
A: T/T in advance, Western Union, Alipay, Paypal.
Q3. How about your delivery time?
A: Depends on the requirement of the producst, according to the materials, dimensions and the manufacture process.
Q4. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q5: What else products do you offer?
A: We provide the products of advanced ceramic materials, including Alumina, Zirconia, Boron Nitride, Silicon Nitride, Machinable Glass Ceramic and other advanced materials.
If you have another question, pls feel free to contact us as below:
Call to +86 0592-5589716
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