What are the applications of Macor ceramics in high-voltage electrical equipment

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Macor ceramic is a machinable glass ceramic material developed by Corning in the United States, which has excellent insulation, high temperature resistance, mechanical strength, and machinability. Macor ceramics are widely used in key components such as insulation support, vacuum sealing, and electrode fixation in high-voltage electrical equipment due to their unique properties. This article will provide a detailed introduction to the specific applications and advantages of Macor ceramics in high-voltage electrical equipment.

Basic characteristics of Macor ceramics
The main components of Macor ceramics are fluorite mica (45%) and borosilicate glass (55%).
Key Performance:
-Excellent electrical insulation: volume resistivity>10 ¹⁴Ω· cm (25 ℃), dielectric strength>40 kV/mm, suitable for high voltage environments.
-High temperature resistance: Can be used for a long time at 800 ℃, with a short-term temperature resistance of up to 1000 ℃.
-Low thermal expansion coefficient (9.3 × 10 ⁻⁶/℃), close to metal, reduces thermal stress problems.
-Precision machining: Ordinary metal processing equipment can be used for turning, drilling, and milling, with a tolerance of up to ± 0.01mm.
-Chemical stability: resistant to acid and alkali corrosion (except HF and strong alkali), does not release gas, suitable for vacuum environment.
-Mechanical strength: flexural strength>90 MPa, moderate hardness (Mohs 5.5), good wear resistance.
These characteristics make Macor ceramics an ideal material for high-voltage electrical equipment.

The specific application of Macor ceramics in high-voltage electrical equipment
High voltage insulation support components
Macor ceramics are commonly used in high-voltage switches, circuit breakers, transformers, and other equipment for:
-Insulated pillar: supports high-voltage conductors to prevent arc breakdown.
-Isolation gasket: used for insulation isolation between electrodes to reduce leakage current.
-Wall conduit: used as a dielectric to isolate internal and external circuits in a high-voltage vacuum chamber.
Advantages: Compared to traditional alumina ceramics, Macor can be processed into complex shapes, reducing assembly steps and improving reliability.

Vacuum high-pressure equipment
Macor ceramics play a crucial role in vacuum circuit breakers, particle accelerators, X-ray tubes, and other equipment
-Vacuum sealing flange: Match sealing with metal (such as Kovar alloy) to ensure ultra-high vacuum environment (<10 ⁻⁶ Pa).
-Electrode holder: Fixing high-voltage electrodes to avoid discharge or creeping phenomena.
-Observation window insulation ring: a transparent window support structure used for high-voltage equipment.

High voltage sensors and measuring equipment
-High voltage probe insulation base: used for signal isolation of voltage/current sensors.
-Electrostatic shielding components: reduce electromagnetic interference (EMI) and improve measurement accuracy.
-The dielectric layer of high-voltage capacitors has a stable dielectric constant (ε ≈ 6.1), suitable for high-frequency and high-voltage circuits.

High voltage power electronic equipment
-IGBT module insulation substrate: replaces traditional alumina substrate to reduce thermal resistance.
-High voltage connector: used as an insulation interface for electric vehicle charging stations and high-voltage direct current (HVDC) transmission systems.

Special environmental applications
-Aerospace high-voltage equipment: such as insulation brackets for satellite power systems, resistant to radiation and extreme temperatures.
-Deep sea high-voltage electrical equipment: corrosion-resistant and non absorbent, suitable for underwater high-voltage cable joints.

Macor ceramics play a crucial role in high-voltage electrical equipment due to their unique insulation, high temperature resistance, and processability. From vacuum circuit breakers to aerospace power systems, their applications are constantly expanding.

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.