High strength silicon nitride ceramics

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Silicon nitride ceramics (Si ∝ N ₄) have become a key material in the high-end manufacturing field to replace metals and ordinary ceramics due to their excellent mechanical strength, high temperature resistance (continuous use at 1200 ℃), and thermal shock resistance (Δ T=800 ℃). We focus on the research and development of high-strength silicon nitride ceramics, achieving excellent performance of bending strength ≥ 1000MPa and fracture toughness ≥ 7MPa · m ¹/² through nanoscale grain control and hot isostatic pressing (HIP) process, providing high reliability and long-life component solutions for industries such as semiconductors, aerospace, and new energy.

FAQ: Frequently Asked Questions for Users
Q1: What are the typical application scenarios of high-strength silicon nitride ceramics?
A: Widely used in semiconductor equipment (wafer carriers, etching rings), new energy vehicles (IGBT substrates, bearing balls), aerospace (turbine rotors, combustion chamber liners), and medical equipment (artificial joints, surgical tools) and other fields.
Q2: How to customize non-standard size silicon nitride ceramic parts?
A: Supports 2D/3D drawing processing, with a minimum wall thickness of 0.5mm and a maximum size of 500mm × 500mm. It provides precision machining such as drilling, milling, and grinding, with tolerances controlled within ± 0.01mm.
Q3: What is the corrosion resistance of the product?
A: There is no corrosion reaction in strong acid (such as concentrated sulfuric acid, aqua regia), strong alkali (such as NaOH solution), and molten metal (aluminum, copper) environments, and the service life is 3-5 times that of traditional alumina ceramics.

User core needs and problem solving
Extreme environmental adaptability: solves the problem of deformation and wear of metal components under high temperature, corrosion, or high-speed friction, and extends equipment maintenance cycles.
Lightweight and high-strength balance: Replace traditional metals to achieve a weight reduction of 40% -60%, while maintaining the same or higher load-bearing capacity and improving energy efficiency.
High precision machining requirements: Through ultra precision grinding technology, meet the stringent requirements of semiconductor equipment for component surface roughness (Ra ≤ 0.05 μ m).

Product application scenarios and core values
Scenario 1: Semiconductor wafer manufacturing equipment
A global Top5 semiconductor equipment supplier requires customized silicon nitride wafer carriers with a diameter of 300mm and a thickness of 10mm for 12 inch wafer etching processes. The traditional alumina carrier disk has a warpage rate of over 0.1% at the wafer edge due to a mismatch in thermal expansion coefficient. However, we optimized the silicon nitride formula (adding 5% Y ₂ O3 stabilizer) to reduce the thermal expansion coefficient to 3.2 × 10 ⁻⁶/℃, decrease the wafer curvature to 0.02%, and increase the yield by 15%.
Scenario 2: Electric Drive System for New Energy Vehicles
A leading car company is developing an 800V high-voltage electric drive system and needs to customize 20mm diameter silicon nitride bearing balls to replace traditional steel balls, in order to solve the problems of heating and wear under high-speed rotation (20000rpm). We use hot isostatic pressing technology to eliminate internal pores, extending the life of the bearing ball from 5000 hours to 20000 hours and reducing power consumption by 8%,.
Scenario 3: Combustion Chamber of Aerospace Engine
A certain European aircraft engine manufacturer needs to customize a 5mm thick silicon nitride combustion chamber liner to withstand 1400 ℃ gas erosion and thermal shock cycles (1000 times/year). We used gradient sintering technology to form a dense oxide layer (thickness of 20 μ m) on the surface of the liner, improving its thermal shock resistance to Δ T=900 ℃. It successfully passed the 500 hour durability test, reducing the cost of replacing the previous component by 40%.

Product type: High strength silicon nitride ceramic
Core performance: flexural strength ≥ 1000MPa, temperature resistance of 1200 ℃, thermal shock resistance Δ T=800 ℃
Application areas: Semiconductor, New Energy, Aerospace, Medical
Customized services: support non-standard size processing, small batch trial production, surface treatment

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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.