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Silicon carbide bearing sleeve
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Product Features and Uses
Pressureless sintered silicon carbide bushings are more wear-resistant, high-temperature resistant, and corrosion-resistant than reaction-sintered silicon carbide bushings. The working environment can reach up to 1650℃, and they can be applied not only in industries such as petroleum, chemical, automotive, military, and papermaking, but also in food, pharmaceuticals, and nuclear industries.
Characteristics of Pressureless Sintered Silicon Carbide Ceramic Materials
Pressureless sintered silicon carbide ceramics are made from high-purity, ultra-fine silicon carbide powder, with a small amount of sintering aids added. They are sintered in an inert gas or vacuum atmosphere at high temperatures of 1950~2100℃, resulting in products that are almost completely dense and possess excellent mechanical properties. Pressureless sintered silicon carbide ceramics include products such as bushings, sliding bearings, mechanical sealing rings, flat rings, sandblasting nozzles, bulletproof plates, ceramic heating plates, ceramic heat distribution plates, 3D glass thermal bending grinding tools, and ceramic plates for microchannel reactors.
The silicon carbide ceramic products from JNDE NEW MATERIAL company feature acid and alkali corrosion resistance, high hardness and wear resistance, good self-lubrication, high-temperature oxidation resistance, low thermal expansion coefficient, and good thermal conductivity. They are widely used in aerospace, automotive industry, petrochemical, mechanical sealing, metallurgy and power, pump equipment, thermal bending grinding tools, microchannel reactors, new energy, semiconductors, scientific research, and national defense military industries.
Project | Unit | Index |
Bulk Density | g/cm³ | 3.08-3.16 |
Hardness HV | kg/mm³ | >2550 |
Compressive Strength | Mpa | >2500 |
Flexural Strength | Mpa | 400-490 |
Silicon Carbide Content | % | >=99.2 |
Elastic Modulus | Gpa | >=410 |
Thermal Conductivity | W/m.k | 100-120 |
Thermal Expansion Coefficient | i/℃ | 4.0 |
Porosity | % | <0.1 |
Poisson's Ratio |
| 0.16 |
Operating Temperature | ℃ | 1900 |
Pressureless Sintered Ceramic Production Equipment

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