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Magnesium Oxide Insulator
Purity: 99%
Magnesium Oxide Insulator offers excellent electrical insulation and high thermal conductivity, making it suitable for heating elements, thermocouples, and high-temperature furnaces. It performs well under extreme conditions without degrading or melting, ensuring stable insulation and energy efficiency. We can supply high-quality magnesium oxide insulators with various specifications and competitive prices, offering customized solutions to meet specific requirements.
Or email us at sales@heegermaterials.com.Magnesium Oxide Insulator Data Sheet
| Color | Yellow, Light yellow, or White |
| Materials | MgO |
| Purity | 96% min |
Magnesium Oxide Insulator Description
Magnesium Oxide Insulator is engineered to provide both electrical insulation and structural support for thermocouples and heating elements. With an exceptionally high melting point of about 3098 K, it maintains stability and insulation performance even under prolonged exposure to extreme heat. It resists chemical attack and corrosion in molten metal and high-temperature gas environments, outperforming many other oxide materials. Its excellent dielectric strength and thermal conductivity ensure reliable operation in demanding industrial systems.
Magnesium Oxide Insulator Chemical Compositions
| Composition | Content (%) |
|---|---|
| SiO₂ | 0.1 |
| Al₂O₃ | 0.1 |
| MgO | 98 |
| CaO | 0.1 |
| CrO | 0.1 |
| SiC | 0.1 |
Magnesium Oxide Insulator Features
- High Melting Point: With a melting temperature around 3098 K, it maintains stability and insulation properties even under extreme heat.
- Excellent Electrical Insulation: Provides reliable dielectric strength, effectively preventing electrical leakage in thermocouples and heating systems.
- Strong Corrosion Resistance: Performs well in molten metals, reducing degradation and extending service life in harsh chemical environments.
- Outstanding Thermal Conductivity: Ensures efficient heat transfer while maintaining electrical isolation, supporting consistent performance in high-temperature devices.
- Mechanical Strength and Durability: Offers solid structural support for thermoelements, maintaining integrity and reliability during long-term use.
Magnesium Oxide Insulator Applications
- Thermocouples and Temperature Sensors: Used to insulate and support thermoelements, ensuring accurate temperature measurement in high-temperature environments.
- Heating Elements: Serves as an electrical insulator in electric heaters and furnaces, allowing efficient heat transfer while preventing electrical shorting.
- High-Temperature Furnaces: Applied in furnace construction and insulation systems to maintain thermal stability and reduce heat loss.
- Metallurgical Processing: Performs reliably in molten metal environments, offering corrosion resistance and insulation in casting and smelting operations.
- Power and Electrical Equipment: Used in high-voltage systems and industrial heating devices where strong dielectric strength and heat endurance are required.
Magnesium Oxide Material Properties
Magnesium Oxide Ceramic Machining
Magnesium oxide can be machined in green or bisque form before sintering, and to a limited extent in its fully sintered state. In its pre-sintered state, the material is relatively soft and easier to shape, but like many ceramics, it undergoes significant shrinkage—up to 20%—during sintering, which can affect final dimensions. Fully sintered magnesium oxide is very hard and brittle, requiring diamond tools and precision equipment for any post-sintering machining.
Machining Methods and Considerations
- Green or Bisque Machining: Easier to cut and form, suitable for complex shapes before firing.
- Sintering Shrinkage: Expect about 15–20% dimensional reduction during sintering, which impacts tolerance control.
- Post-Sintering Machining: Requires diamond grinding tools due to the material’s hardness and brittleness.
- Fragility: Fully sintered MgO is prone to chipping and fracture if not handled with care during machining.
- Tooling and Time: Machining dense MgO ceramics is time-consuming and requires specialized equipment.
Magnesium Oxide Ceramic Packaging
Magnesium oxide ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
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