Silicon nitride ceramics with ultra-high fracture toughness

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User question:
I need a material that is both hard and impact resistant, capable of stable operation in extreme high temperatures and corrosive environments, while reducing equipment weight and extending service life – can silicon nitride ceramics solve these problems
Answer: Yes! Silicon nitride ceramics with ultra-high fracture toughness are designed specifically for you. It can not only meet the needs of high temperature corrosion resistance, lightweight and toughness, but also solve the core pain points of traditional ceramics being prone to brittleness and metal materials being prone to fatigue corrosion. It is widely used in aerospace, new energy, precision manufacturing and other fields.

Why is ultra-high fracture toughness crucial?
Silicon nitride (Si3N4) ceramics, with their unique crystal structure and sintering process, achieve a perfect combination of hardness (Vickers hardness ≥ 1500 HV) and toughness (fracture toughness can reach 8-12 MPa · m ¹/²). Compared to ordinary ceramics, its thermal shock resistance is increased by more than 300%, its wear resistance is 5 times higher than alloy steel, and its density is only 40% of steel. It can still maintain stable performance under extreme working conditions.

What industry challenges are being solved?

1. New energy and semiconductors
   -Problem: The lithium battery sintering roller furnace is prone to deformation at high temperatures, resulting in poor product consistency.
   -Solution: Using silicon nitride ceramic rollers, they can withstand high temperatures of 1600 ℃ and have an extremely low coefficient of thermal expansion, ensuring uniform sintering of battery materials and extending their lifespan to more than three times that of metal rollers.
2. Aerospace
   -Problem: Aviation bearings need to operate at high speeds and high loads for a long time, and traditional steel is prone to fatigue failure.
   -Solution: Silicon nitride ceramic bearing balls have low density and strong self-lubricating properties, which can increase bearing speed by 30% and completely avoid electrochemical corrosion.
3. Industrial manufacturing
   -Problem: High temperature valves wear out quickly in corrosive media and are replaced frequently.
   -Solution: The silicon nitride valve core and seals are resistant to acid and alkali corrosion, extending their service life to five times that of special alloys and significantly reducing maintenance costs.

Customized specification service: flexible to meet diverse needs
We provide customized production in all dimensions, covering:
-Size range: from miniature ceramic bearing balls (diameter 0.5mm) to large structural components (length ≤ 1.5m).
-Process adaptation: Hot press sintering, reaction sintering, and pressure sintering processes are optional to meet different mechanical performance requirements.
-Surface treatment: can be polished, coated, or structured to enhance adhesion or sealing in specific environments.

Customer Case Studies (Anonymous)
-A certain military industrial group
By using our customized silicon nitride ceramic radar cover, the impact resistance has been increased by 50% while ensuring wave transmission performance, and it has successfully passed supersonic wind tunnel testing.
-Photovoltaic leading enterprise
Replacing the polycrystalline silicon ingot furnace with silicon nitride ceramic crucible, the temperature resistance reaches over 1800 ℃, the single continuous service life exceeds 8000 hours, and the annual maintenance cost is reduced by 2 million yuan.
-European Precision Instrument Company
The application of silicon nitride ceramic components in the high-speed surface mount machine guide rail reduces equipment vibration noise by 40%, and the positioning accuracy remains stable at ± 0.01mm for a long time.

If you need customized solutions or technical parameter reports for silicon nitride ceramics, please feel free to contact us at any time.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.