99% alumina ceramic flow dividers are industrial components made of high-purity alumina ceramic, possessing excellent high-temperature resistance, wear resistance, and insulation properties. They are widely used in petrochemicals, new energy, medical precision equipment, and other fields. The following are its key characteristics and technical parameters:
Material Characteristics
1. Purity and Hardness: Alumina content ≥99%, Mohs hardness reaches 9 (second only to diamond), and wear resistance is 10-20 times that of stainless steel.
2. High-Temperature Resistance: Melting point is 2075℃, can operate stably at 1700℃, and the thermal expansion coefficient is only 1/3 of that of metals.
3. Electrical Insulation: Volume resistivity >10¹⁴Ω・cm, dielectric constant 9.8, suitable for high-frequency circuit substrates.
Technical Parameter Comparison
1. Mechanical Strength: Bending strength ≥800MPa (zirconia ceramic shaft), surface roughness can be controlled to Ra≤0.1μm.
2. Corrosion Resistance: Weight loss <0.01g after 30 days of immersion in 10% hydrochloric acid, acid and alkali corrosion resistance is more than 10 times that of 316L stainless steel.
3. Sealing Performance: The friction coefficient of the ceramic-to-ceramic friction pair is as low as 0.05, and the sealing gap can be controlled to 0.01mm.
Application Scenarios
1. Petrochemicals: Used for high-pressure fluid transportation; zirconia material is preferred when the working pressure >50MPa.
2. New Energy: Used in lithium battery coating machines to transport high-viscosity slurries, with a pulsation amplitude <1%.
3. Medical Precision: Surface roughness Ra≤0.02μm, suitable for precision drug delivery devices such as insulin pumps.
Supports custom specifications.
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