Description of Boron Nitride Composite Ceramic BN-SZ
BN is a kind of advanced synthesis ceramic that was sintered at a high temperature and high pressure by BN powder. It has many excellent properties including high-temperature resistance, high thermal conductivity, easy machining, and good lubricity, making BN an outstanding material.
Boron nitride composite ceramic BN-SZ, using silicon carbide and zirconia as a bonding agent, improves the thermal shock resistance and wear resistance of the product. It is commonly used as a separate ring for horizontal continuous casting and a nozzle made of amorphous ribbon. These products have stable chemical properties, high thermal shock resistance, and high corrosion resistance. They are widely used in molten metal contact.
• Chemical stability
• Good wear resistance
• High thermal shock stability
Specifications of Boron Nitride Composite Ceramic BN-SZ
| Grade |
BN-SZ |
| Compositions |
BN+SiC+ZrO2 |
| Density |
g/cm3 |
2.3-3.0 |
| 25°C Volume Resistivity |
Ω·cm |
>1012 |
| Max. Service Temp. (°C) |
Oxygen |
900 |
| Inert Gas |
1700 |
| High Vacuum |
1700 |
| Flexural Strength |
Mpa |
100 |
| Compressive Strength |
Mpa |
300 |
Coefficient of Thermal Expansion
25-1000°C |
10–6/K |
4.0 |
| Thermal Conductivity |
W/mK |
40 |
Applications of Boron Nitride Composite Ceramic BN-SZ
1. Aerospace: Used in thermal protection systems and high-temperature structural components.
2. Electronics: Electronics are heat spreaders, substrates, and insulators due to high thermal conductivity and electrical insulation.
3. Semiconductor Processing: Utilized in components exposed to harsh environments, such as plasma chambers and wafer handling parts.
4. Metal Forming: Serves in dies, molds, and crucibles for handling molten metals and glass.
5. Automotive: Applied in components requiring thermal management and wear resistance, such as engine parts.
6. Defense: Used in armor and protective coatings due to its lightweight and high-strength properties.
7. Chemical Processing: Suitable for reaction vessels, seals, and gaskets that need chemical resistance and high-temperature stability.
Packaging of Boron Nitride Composite Ceramic BN-SZ
Our Boron Nitride Ceramic BN-SZ is always carefully handled to prevent damage during storage and transportation and to preserve the quality of our product in its original condition.
Boron Nitride Composite Ceramic BN-SZ FAQs
Q1: Is Boron Nitride Composite Ceramic BN-SZ electrically insulating?
A1: Yes, Boron Nitride Composite Ceramic BN-SZ maintains excellent electrical insulation properties. Despite its high thermal conductivity, it provides effective electrical isolation, which is essential for many electronic and electrical applications, such as in power electronics and semiconductors.
Q2: What is the mechanical strength of Boron Nitride Composite Ceramic BN-SZ?
A2: BN-SZ composites have excellent mechanical strength, enhanced by the inclusion of materials like silicon carbide or other ceramic reinforcements. This results in a high resistance to fracture, wear, and thermal shock. The material is tough and durable, but like all ceramics, it is brittle under certain stress conditions, so proper handling is required.
Q3: How is Boron Nitride Composite Ceramic BN-SZ manufactured?
A3: Boron Nitride Composite Ceramic BN-SZ is typically produced through a sintering process, where a mixture of boron nitride and reinforcing agents like silicon carbide is heated to high temperatures to form a dense, strong composite ceramic. The material is then precision-machined into the required shape and size to meet specific application requirements.
