Silicon carbide ceramic disc

The core advantage of silicon carbide ceramics lies in their versatile performance portfolio, with virtually no weaknesses:

1. Extremely High Hardness: With a Mohs hardness of 9.2-9.3, it ranks among the hardest materials in the world, second only to diamond and cubic boron nitride (CBN). This makes it extremely wear-resistant.
2. Excellent High-Temperature Performance: It maintains its strength at temperatures up to 1600°C, without softening or melting like metals. Its maximum operating temperature can reach 1650°C.
3. High Thermal Conductivity: It conducts heat very well, even exceeding some metals (such as aluminum). This is crucial for applications requiring heat dissipation.
4. Low Coefficient of Thermal Expansion: Dimensional changes are minimal when heated, resulting in excellent thermal shock resistance and the ability to withstand rapid temperature changes without cracking.
5. Excellent Chemical Stability: Highly resistant to acid and alkali corrosion, and resists oxidation even at high temperatures.
6. High Strength and Rigidity: High flexural strength and elastic modulus provide excellent structural stability.

• Seal Rings: Dynamic and static rings in mechanical seals, particularly in highly corrosive and high-temperature media, offer performance far exceeding that of cemented carbide and alumina ceramics. This is one of its most classic and widespread applications.
• Nozzles: Sandblasting and spray nozzles offer wear lifespans dozens of times greater than metal or other ceramic nozzles.
• Bearing Balls and Bushings: Used in high-speed, high-precision, corrosion-resistant machine tool spindles.

• Kiln Accessories: Used in rollers, crossbeams, and setters in high-temperature sintering furnaces operating above 1350°C. Their high-temperature load-bearing capacity and thermal shock resistance ensure stable kiln operation and long life.
• Burner Nozzles: Used in efficient and clean combustion systems.

• Key components in wafer manufacturing: diffusion furnace tubes, wafer boats, and paddles. Silicon carbide ceramics' high purity, high thermal conductivity, high-temperature deformation resistance, and corrosion resistance make them an irreplaceable carrier and transport material in semiconductor diffusion, oxidation, and annealing processes.
• Epitaxel trays: Used in MOCVD equipment to grow GaN (gallium nitride) LED chips, they are core consumables in the LED industry.

• Utilizing its ultra-high hardness and low density, it can be made into bulletproof inserts and armor plates for personal protection and vehicle and aircraft armor, effectively resisting the impact of armor-piercing projectiles. It is often combined with composite materials (such as polyethylene).

• Heat exchangers: Used in high-temperature waste heat recovery systems in the chemical and metallurgical industries, they offer high efficiency and long life.
• Porous ceramic filters: Used for dust removal and purification of high-temperature flue gases.

• Laser mirrors: Thanks to their high stiffness and low thermal deformation, they can be used as the base material for mirrors in high-power laser systems.
• Lightweight precision structural parts: used to replace metals in the aerospace field.