Pressureless sintered silicon carbide ceramic protective sleeve

Pressureless sintered silicon carbide ceramic protective sleeve is a high-performance ceramic product made from high-purity silicon carbide powder through isostatic pressing and high-temperature sintering processes. This protective sleeve has an integral structure, and the blind end and tube are integrally formed. Flanges can be selected according to requirements.

Product features
(I) Mechanical properties

• High hardness: Silicon carbide ceramics are extremely hard, with a Mohs hardness of about 9.2 to 9.6, second only to diamond, which can effectively resist wear and scratches.
• High strength: up to 400-600 MPa flexural strength, compressive strength over 2000 MPa, can withstand high mechanical loads.
• High modulus of elasticity: The modulus of elasticity is approximately 400-450 GPa, with minimal deformation under force, making it suitable for high-precision equipment.
  (II) Thermal properties
• High temperature resistance: Can operate stably in environments up to 1600 ° C.
• hot topic conductivity: thermal conductivity is about 120 – 200 W/m · K, which can quickly conduct heat and avoid local overheating.
  Low coefficient of thermal expansion: low coefficient of thermal expansion, about 4.0 × 10 ° C/° C, high dimensional stability, reducing the risk of cracking caused by thermal stress.
• Excellent thermal shock resistance: able to withstand rapid temperature rise and fall, such as sudden cold and sudden heat from room temperature to 1000 ° C.
  (III) Chemical properties
  Corrosion resistance: Extremely resistant to most acid, alkali, and salt solutions (except hydrofluoric acid and strong alkali solutions), suitable for applications in the chemical and metallurgical fields.
  Oxidation resistance: In a high-temperature oxidizing atmosphere, a dense oxide film (SiO _ 2) forms on the surface, further preventing internal oxidation.
  (Iv) Electrical properties
  Semiconductor characteristics: Silicon carbide is a wide bandgap semiconductor material with a bandgap width of about 3.2 eV, suitable for high-temperature and high-frequency electronic devices.
  Insulation: High-purity silicon carbide ceramics have a high resistivity at room temperature (10 ³ – 10 🥰 Ω · cm), making them suitable for insulating components.
  (V) Other characteristics
  High purity: The purity of raw materials is usually higher than 99.5%, ensuring the stability and consistency of material properties.
  Surface finish and dimensional accuracy: The surface finish can reach less than 0.1 μm, and the dimensional accuracy can be controlled at the micron level to meet the needs of high-precision assembly.

Product application
(1) High-temperature industrial equipment

• High-temperature furnace: a protective sleeve used in high-temperature furnaces to ensure the stability of heating elements.
  Burner nozzle: maintains stable performance in high-temperature combustion environments.
  (2) Semiconductor manufacturing
  Wafer processing: used for the transmission and support components of semiconductor wafers.
• High-purity gas transportation: Conveying high-purity gas in semiconductor equipment to avoid contamination.
  (III) Chemical industry and metallurgy
• Corrosion-resistant pump valves: used to transport strong acids, alkalis or molten metals.
  Reactor lining: as a corrosion-resistant liner in high-temperature chemical reactors.
  (Iv) Energy and environmental protection
  Nuclear reactor components: radiation-resistant components used in nuclear reactors.
  Solar photovoltaics: as a high-temperature support material in photovoltaic equipment.
  (5) High-precision equipment
  Laser equipment: mirror mounts or optical components for lasers.
  Measuring instruments: used as stable support components in high-precision measuring equipment.

Product advantage

• Excellent comprehensive performance: mechanical, thermal and chemical properties are at the leading level.
• Adaptable to extreme environments: suitable for high temperatures, high wear and high corrosive environments.
  Long life: wear resistance, corrosion resistance, reducing equipment maintenance costs.

Product Specifications
The specifications of the pressureless sintered silicon carbide ceramic protective sleeve can be customized according to customer requirements, including size, shape, and flange.

Pressureless sintered silicon carbide (SCC) ceramic protective sleeve has been widely used in extreme environments such as high temperature, high corrosion and high wear due to its excellent performance. Its high purity, high performance and versatility make it an indispensable high performance material in modern industry.