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Magnesium Oxide Crucible
Magnesium Oxide Crucible is made from high-purity MgO and designed for use in extreme temperature environments, typically up to 2000°C. It offers excellent thermal stability, chemical resistance, and low reactivity with molten metals and oxides. This makes it suitable for applications such as metal smelting, crystal growth, and ceramic sintering. We can supply high-quality magnesium oxide crucibles with various specifications and competitive prices, offering customized solutions to meet specific requirements.
Or email us at sales@heegermaterials.com.Magnesium Oxide Crucible Data Sheet
| Color: | White/Ivory |
| Chemical Formula: | MgO |
| Refractoriness: | Super high grade (Refractoriness > 2000°) |
| Density: | 3.20 g/cm3 |
| Type: | Dielectric ceramic |
| Dimension: | customized |
| Shape: | Cylinder, Conical Cylinder, Rectangular, T-shape, or customized. |
| Working temperature: | 2000°C |
| Compressive strength: | 1000 MPa |
| Flexural strength: | 300 MPa |
| Surface: | Glass/Polished |
| Processing services: | Bending, welding, punching, decoiling, cutting, molding |
Magnesium Oxide Crucible Description
Magnesium oxide crucible is a refractory container engineered for high-temperature processes involving aggressive materials. With the high melting point, good thermal conductivity, and strong resistance to basic slags and metal oxides, it performs well in environments like vacuum furnaces, rare-earth element processing, and powder metallurgy.
Magnesium Oxide Crucible Chemical Compositions
| Composition | Content (%) |
|---|---|
| SiO₂ | 0.1 |
| Al₂O₃ | 0.1 |
| MgO | 98 |
| CaO | 0.1 |
| CrO | 0.1 |
| SiC | 0.1 |
Magnesium Oxide Crucible Features
- High Melting Point: Can withstand temperatures above 2000°C, suitable for extreme heat environments.
- Strong Chemical Stability: Resistant to basic slags, alkalis, and metal oxides, ensuring material purity.
- Excellent Thermal Conductivity: Enables uniform heating and efficient thermal transfer.
- Low Reactivity: Minimizes contamination of sensitive samples during high-temperature processes.
- Good Thermal Shock Resistance: Maintains structural integrity under rapid temperature changes.
Magnesium Oxide Crucible Applications
- High-Temperature Metal Processing: Used for melting and holding reactive metals such as uranium, thorium, and rare earth elements.
- Laboratory Analysis: Ideal for ashing and sample preparation in analytical chemistry due to its purity and chemical resistance.
- Crystal Growth: Supports the production of single crystals under extreme thermal conditions.
- Powder Metallurgy: Suitable for sintering and firing metal powders in controlled atmospheres.
- Glass and Ceramic Research: Used in melting and studying high-purity glass and ceramic materials.
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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