Wear Resistant Al2o3 Alumina Ceramic Plate for Protecting Tube

• High hardness: Al2O3 ceramic plate hardness is second only to a few super-hard materials such as diamond, with a Mohs hardness of around 9. Therefore, it has excellent wear resistance and performs well in some application scenarios that require resistance to friction and wear. For example, when used as a wear-resistant component in the mechanical processing field, it can maintain a good surface state for a long time and is not easily scratched or worn.
• High strength: The compressive strength of alumina ceramic sheets is relatively high, capable of withstanding significant pressure loads. They can be used in applications such as structural components that bear heavy pressure, ensuring the stability of the structure under stress. Meanwhile, its bending strength can also meet the requirements of many working conditions, and it is less likely to undergo bending deformation or even fracture.

• High-temperature resistance: It can operate stably in very high-temperature environments, generally withstanding temperatures up to 1600℃ or even higher. Therefore, it is often used in high-temperature furnace linings, high-temperature pipelines and other high-temperature industrial environments. Under high-temperature conditions, it can still maintain its structural integrity and performance stability.
• High thermal conductivity: It has relatively good heat conduction ability and can quickly transfer heat, which gives it an advantage in heat dissipation related application scenarios, such as heat sinks for electronic devices, helping to dissipate heat in a timely manner and avoiding performance degradation or damage to the equipment due to overheating.
• Good thermal stability: When subjected to sudden temperature changes, alumina ceramic sheets are not prone to thermal stress damage such as cracking, which means they have good thermal shock resistance. This enables them to adapt to working environments with frequent temperature changes.

• Good insulation: It is an excellent electrical insulating material with an extremely high resistivity, which can effectively block current. In the field of electronics and electrical appliances, it is often used to make insulating components, such as insulating gaskets for high-voltage electrical equipment, ensuring the safe use of electrical equipment and preventing electrical faults such as leakage.

• Strong chemical stability: It is resistant to acid and alkali corrosion and has excellent tolerance to most chemical reagents. In the chemical and pharmaceutical industries, even when in contact with various chemical substances, it can maintain its performance and structure for a long time without being damaged, and can be used as corrosion-resistant containers, pipe linings and other components.
• The main uses of alumina ceramic sheets:Based on the above properties, alumina ceramic sheets have been widely used in multiple fields such as industry, electronics, and medical care. Typical applications are as follows:

• Mining/building materials: It is used for crusher liners, inner linings of conveying pipes, and grinding media in ball mills, reducing the wear of ore and cement particles on equipment and extending the equipment's service life by 3 to 5 times. ​
• Mechanical processing: As wear-resistant strips for machine tool guideways and tool heads (in combination with metal substrates), it enhances cutting accuracy and tool durability. ​
• New energy: During the sintering process of lithium battery cathode materials, it serves as the inner lining of the kiln and the firing tray, resisting high temperatures and powder erosion, and preventing contamination by impurities. ​

• Power electronics: As an insulating substrate for IGBT modules and thyristors, it features both high insulation and thermal conductivity (assisting in heat dissipation), replacing traditional aluminum nitride ceramics (with lower costs). ​
• Electronic components: Used for ceramic capacitor casings and integrated circuit packaging bases, it takes advantage of its chemical stability to isolate moisture and impurities, ensuring the long-term reliability of the components. ​
• High-voltage equipment: As high-voltage insulators and components of vacuum switch arc extinguishing chambers, it can withstand high voltages above 10kV and does not reduce insulation performance in humid environments. ​

• Metallurgy: As the inner lining of copper plates in the mold of steelmaking continuous casting machines and refractory bricks in non-ferrous metal smelting furnaces, it resists the high-temperature erosion and scouring of molten steel/molten aluminum. ​
• Chemical industry: It is used as the inner lining of reaction vessels and catalyst carriers. It remains stable in strong acid (such as sulfuric acid, nitric acid) and strong alkali (such as sodium hydroxide) environments and does not undergo chemical reactions with reactants. ​
• Environmental protection: As the inner lining of the flue for waste incinerators and the anti-corrosion layer of desulfurization towers, it can withstand high temperatures of 800-1000℃ and corrosion from sulfur-containing flue gas. ​

• Medical devices: They are used to make artificial joints (such as hip joint linings) and dental implant abutments. By taking advantage of their biocompatibility (non-toxic and not causing rejection reactions) and wear resistance, their service life can reach 15-20 years. ​
• Precision measurement: As the base of gauge blocks and calibration gauges, its low coefficient of expansion ensures that the dimensional accuracy error is ≤0.001mm when the temperature changes, meeting the measurement requirements at the micrometer level.
  

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