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Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic

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Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic

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Type : Ceramic Parts

Processing service : Welding,Cutting,Moulding,CNC

Thermal Conductivity : 15 W/m.k

Density : 3.24g/cm3

Hardness : 18 Gpa

Compressive strength : 488 Mpa

Brand Name : BLM-kcf-1

Place of Origin : Jiangsu, China (Mainland)

MOQ : 1pcs

Price : FobShanghai usd 3.5-5/pc

Payment Terms : Western Union,L/C,T/T

Supply Ability : 3000 pc/pcs per Month

Delivery Time : 25-30 days subject to the clients' requirement and quantity

Packaging Details : packed and labeled according to the regulations and customer's requests.Great care is taken to avoid any damage which might otherwise be caused during storage or transportation.

Color : Grey

Application : Industrial Ceramic

Material : Silicon nitride

Place of origin : Jiangsu,China

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Silicon Nitride Ceramic Welding Positioning Block
Used for electronic appliances and textile machinery applications.
Material Description
Silicon nitride (Si₃N₄) ceramics is an inorganic non-metallic compound with strong covalent bonds. Its basic structural unit is a tetrahedron where the silicon atom is located at the center and four nitrogen atoms are located at the four vertices. This forms a continuous and strong network structure in three-dimensional space, resulting in exceptional material properties.
Silicon nitride exists in three crystal forms, with two common types:
  • α-Si₃N₄: Needle-like crystals, white or off-white in color
  • β-Si₃N₄: Darker colored, dense granular polyhedron or short prism
Both are hexagonal crystal structures. The α phase has higher hardness but is chemically unstable compared to the β phase, which transforms at high temperatures. Therefore, β-Si₃N₄ is the primary form used in silicon nitride ceramics.
Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic
Performance Characteristics
Physical Properties
  • Thermal properties: High-temperature refractory substance with no melting point, decomposes at approximately 1900°C under normal pressure
  • Excellent creep resistance under high pressure
  • Softening point up to 1800°C for reaction sintered silicon nitride without binder
  • Good thermal conductivity
  • Low thermal expansion coefficient
  • Excellent electrical insulation performance with small dielectric coefficient and high breakdown voltage
Chemical Properties
  • Oxidation resistance: Does not react with oxygen in dry atmosphere below 800°C
  • Molten metal corrosion resistance: Resists infiltration and corrosion from elemental metal melts (except copper)
  • Resistance to acid, alkali and salt corrosion: Soluble in hydrofluoric acid but resistant to dilute acids
Mechanical Properties
  • Excellent high-temperature strength with minimal strength attenuation at 1200°C compared to room temperature
  • Very low high-temperature creep rate due to strong covalent bonds
  • High hardness, second only to superhard materials like diamond, cubic BN, and B₄C
  • Low friction coefficient with self-lubricating properties similar to oiled metal surfaces
Applications
Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic
Automotive Industry: Used as engine component material including lower wear rocker pads, turbochargers for reduced inertia and engine lag, and waste gas control valves for improved acceleration.
Bearings: Silicon nitride ceramics offer excellent impact resistance, making them ideal for high-performance bearings. Used in NASA space shuttle main engines, high-end automotive bearings, industrial bearings, wind turbines, and various sports equipment.
High Temperature Applications: One of the few monolithic ceramic materials capable of surviving severe thermal shocks and thermal gradients in hydrogen/oxygen rocket engines.
Medical Applications: Used in orthopedic applications and as an alternative to PEEK and titanium in spinal fusion devices. The hydrophilic, microstructured surface contributes to strength, durability and reliability.
Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic

Product Tags:

Silicon Nitride Ceramic Welding Block

      

Electronic Appliances Positioning Block

      

Silicon Nitride Ceramic Positioning Block

      
Quality Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic for sale

Silicon Nitride Ceramic Welding Positioning Block with High Thermal Conductivity 15 W/m.k and High Compressive Strength 488 Mpa for Industrial Ceramic Images

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