Silicon Carbide Ceramics The Superior Material For High-Temperature Performance With Free Silicon Content

Silicon Carbide Ceramics The Ultimate Material for High-Temperature Performance

Silica ceramic is a high-performance inorganic material primarily composed of silicon dioxide (SiO₂), valued for its exceptional thermal stability, low thermal expansion, and excellent dielectric properties. It serves critical roles in semiconductor, optical, and high-temperature applications where precision and reliability are paramount.

Key Characteristics

• Ultra-Low Thermal Expansion – Near-zero thermal expansion coefficient (∼0.55 × 10⁻⁶/°C for fused silica), ideal for precision optics and space telescopes.

• High Thermal Shock Resistance – Withstands rapid temperature changes (up to 1000°C quenching) due to low thermal conductivity.

• Optical Transparency – Fused silica transmits UV to IR wavelengths (∼180 nm to 2.5 μm), used in lenses and laser components.

• Chemical Inertness – Resists acids (except HF) and molten metals, suitable for crucibles and labware.

• Electrical Insulation – High resistivity (>10¹⁶ Ω·cm) and low dielectric loss at high frequencies.

Manufacturing Process

1. Raw Material Synthesis

   • High-purity SiO₂ from quartz sand (fused silica) or sol-gel-derived nanocolloids.

2. Forming

   • Sintering: Compacted SiO₂ powder fired at 1300–1500°C (vitreous silica lacks crystalline phases).

   • Casting/Molding: For transparent optics (e.g., UV-grade fused silica).

3. Post-Processing

   • Precision polishing for optical surfaces (Ra <1 nm).

   • Etching or coating (e.g., anti-reflective layers).

Applications

• Semiconductors: Wafer carriers, diffusion furnace tubes.

• Optics: Telescope mirrors, EUV lithography components.

• High-Tech: Radomes, fiber optic cladding.

• Energy: Crucibles for silicon ingot growth.

Silica ceramic bridges advanced technology and extreme environments, leveraging its unmatched stability.

We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.

Deyu Precision Ceramics Technology Co., Ltd. has many years of experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.