| Customization: | Available |
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| Application: | Aerospace, Architectural, Ceramic Decorations, Electronics, Medical, Refractory |
| Grain Size: | <100nm |
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Industrial-Grade Silicon Nitride Ceramic Ball Bearings
Industrial ceramics are a class of high-performance inorganic non-metallic materials, primarily composed of high-purity oxides (e.g., alumina, zirconia), nitrides (e.g., silicon nitride, aluminum nitride), or carbides (e.g., silicon carbide), manufactured through high-temperature sintering. They are characterized by exceptional hardness (Mohs 7-9.5), high-temperature resistance (above 1500°C), corrosion resistance, wear resistance, and excellent electrical insulation, making them widely applicable in machinery, electronics, chemical engineering, medical fields, and aerospace.
Industrial ceramics can be categorized into structural ceramics (e.g., ceramic bearings, cutting tools) and functional ceramics (e.g., electronic substrates, piezoelectric sensors). Compared to metallic materials, industrial ceramics are lighter and more durable but exhibit higher brittleness. Through material modifications (e.g., zirconia toughening) and precision machining technologies, modern industrial ceramics are progressively overcoming traditional limitations, becoming a core material in advanced manufacturing industries.
| Product Name | 99% Alumina Ceramic | 95% Alumina Ceramic | Zirconia Ceramic | Steatite Ceramic | |
| Main ingredient | AL2O3/99% | AL2O3/95% | ZRO2/94% | MGOSIO2 | |
| Physical Property | Density | 3.85 | 3.6 | 5.9 | 2.8 |
| Water Absorption (%) | 0 | 0 | 0 | 0 | |
| Sintering Temperature ºC | 1700 | 1670 | 1600 | 1350 | |
| Material Properties | Sintering Temperature HV | 1700 | 1600 | 1400 | 800 |
| Flexural Strength 4PT | >3500 | >2900 | >11000 | 900 | |
| Compressive Strength KGF/CM2 |
30000 | 25000 | 25000 | 4000 | |
| Thermal Performance | Max Operating Temperature ºC | 1600 | 1450 | 1300 | 1100 |
| Coefficient of Thermal Expansion 10-6/ºC 0-1000ºC |
8 | 7.8 | 10 | 6 | |
| Thermal Shock Resistance T(ºC) |
200 | 220 | 350 | 200 | |
| Thermal Conductivity W/M.K |
31 | 22 | 3 | 2.5 | |
| Electrical Characteristics | Volume Resistivity Ω.CM |
>10" | >10" | >10" | >10² |
| Dielectric Strength KT/M |
18 | 16 | 15 | 10 | |
| Dielectric Strength 1MHZ(E) |
9.2-10.5 | 9.0-10 | 12.5 | 5.8 | |
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