Silicon Nitride Bonded Silicon Carbide Refractory Products

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Insulation and Refractory Materials

Silicon Carbide Burner Nozzles (1)
Silicon Carbide Burner Nozzles (2)
Silicon Carbide Burner Nozzles (1)
Silicon Carbide Burner Nozzles (3)
Silicon Carbide Burner Nozzles (1)
Silicon Carbide Burner Nozzles (2)
Silicon Carbide Burner Nozzles (1)
Silicon Carbide Burner Nozzles (3)
Silicon Carbide Burner Nozzles

Laurel Silicon nitride bonded silicon carbide is an advanced refractory material that combines silicon carbide particles with silicon nitride bonding phases. The product provides excellent high-temperature strength, wear resistance, thermal shock resistance, and corrosion resistance. It is widely used in demanding industrial environments where traditional refractory materials cannot provide sufficient service life.

The unique structure of Si3N4 bonded SiC allows the material to maintain mechanical strength under high temperatures. The silicon nitride bonding creates a strong connection between silicon carbide grains, which improves stability during continuous heating and cooling cycles.

SNBSC refractory products are commonly used in non-ferrous metal processing, kiln furniture, furnace components, and other high-temperature applications. The material helps improve equipment reliability and reduce replacement frequency in harsh working conditions.

Product Details


Material Structure and Manufacturing Characteristics

The main composition of silicon nitride bonded silicon carbide includes silicon carbide aggregates and silicon nitride bonding phases. The combination provides the product with high hardness from silicon carbide and strong bonding performance from silicon nitride.

The production process forms a dense ceramic structure that reduces internal defects and improves resistance to oxidation. The material maintains stable performance when exposed to high temperatures, molten materials, and mechanical stress.

Si3N4 bonded SiC has a low thermal expansion coefficient compared with many traditional refractory materials. This characteristic helps the product resist cracking caused by rapid temperature changes.

The material can be manufactured into different shapes according to application requirements. Common shapes include beams, rollers, plates, tubes, crucibles, and customized refractory components.

Key Features

Excellent High Temperature Performance

Silicon nitride bonded silicon carbide maintains high mechanical strength at elevated temperatures. The product is suitable for applications where refractory components need to support heavy loads during heating.

Superior Thermal Shock Resistance

The material has good resistance to thermal cycling. The stable structure helps reduce damage caused by frequent heating and cooling operations.

Strong Wear Resistance

The high hardness of silicon carbide provides excellent abrasion resistance. The product performs well in environments with material impact, friction, or particle erosion.

Good Corrosion Resistance

SNBSC refractory products show good resistance to many chemical environments. The material can withstand contact with molten metals and aggressive process atmospheres.

Long Service Life

The dense ceramic structure helps reduce deformation and damage during operation. The product helps users decrease maintenance frequency and improve production efficiency.


Table parameters

Item

N-Sic Block

Bulk Density

(g/cm3)

2.5-2.6

Apparent Porosity

(%)

13-16.5

Cold Crushing Strength

(Mpa)

150-200

Modulus of Rupture

(Mpa)

31-60

Thermal Expansion

(%)

≤0.42

Thermal Conductivity

Thermal linear method

W/m.k

20

Laser method

W/m.k

18

Thermal Shock Resistance

(cycle)

≥50

Beta Ratio


---

Cryolite resistance


Excellent

Chemical Analysis

SiC

(%)

73-81

Si3N4

(%)

16-25

Fe2O3

(%)

≤0.3

Si

(%)

≤0.2


Features

Product Types

The material can be manufactured into different refractory components according to customer requirements.

Common products include:

Silicon Nitride Bonded Silicon Carbide Beams

The beams provide strong load-bearing performance for ceramic kilns. They are commonly used as kiln support components because of their high-temperature strength.

Silicon Nitride Bonded Silicon Carbide Rollers

The rollers provide good wear resistance and thermal stability for continuous kiln.

Silicon Nitride Bonded Silicon Carbide Plates

The plates provide durable protection in furnace and kiln applications where corrosion resistance is required.

Customized Components

Manufacturers can produce special shapes according to drawings and application conditions.

Selection Considerations

Customers should select suitable silicon nitride bonded silicon carbide products according to operating temperature, mechanical load, chemical environment, and installation conditions.

Applications with frequent thermal cycling usually require materials with strong thermal shock resistance. Applications with heavy abrasion or molten metal contact often require products with high wear resistance and corrosion resistance.

Silicon nitride bonded silicon carbide is a high-performance refractory material designed for demanding industrial applications. The combination of silicon carbide strength and silicon nitride bonding provides excellent thermal stability, wear resistance, and long service life.

Si3N4 bonded SiC and SNBSC refractory products provide reliable solutions for high-temperature equipment, and furnace components that require durable refractory performance.


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