Leverage the exceptional performance of our 99%+ pure Magnesium Oxide Ceramic. Offering outstanding high-temperature electrical insulation and thermal conductivity, precision-machined to your exact specifications for demanding applications.
At Adcerax, quality starts at the source. We utilize an advanced manufacturing process, including isostatic pressing and controlled high-temperature sintering, to produce Magnesium Oxide Ceramic with a guaranteed purity exceeding 99%. This meticulous approach results in a fully dense, highly uniform microstructure, delivering exceptional thermal stability and electrical resistivity that remains consistent from batch to batch. Eliminate performance variability and ensure the reliability your critical applications demand.
| Material | Magnesium Oxide Ceramic 99% (Mgo) |
| Tolerances | Up to +/-0.05mm |
| Forming | Dry-pressing, Isostatic-presssing, Injection-molding,Tape - casting,Gelcasting |
| Processing | CNC machining with fine grinding and polishing,Laser cutting,Supersonic machining |
| Customization | Send us your drawing to get our best offers |
| Property | Typical Value/Range | Description |
|---|---|---|
| Density | 3.52-3.56 g/cm³ | The larger the porosity, the lower the density of magnesium oxide. |
| Purity | 99% Mgo | Industrial grade typically 95- 98%, high-purity grade up to 99.9%. |
| Color | White or off-white | Higher purity makes Mgo whiter; impurities may tint it light – yellow. |
| Surface Roughness | Ra 0.5-Ra 1.6μm | Generally , the higher the purity of magnesium oxide, the smoother its surface. |
| Property | Typical Value/Range | Notes |
|---|---|---|
| Maximum Working Temperature (°C) | 2200 | Reducing the impurity content helps to improve the high – temperature performance. |
| Thermal Conductivity (W/(m·K)) | 50 | Thermal conductivity generally decreases with increasing temperature. |
| Thermal Expansion Coefficient (/°C) | 13*10⁻⁶ | The thermal expansion coefficient of MgO ceramics typically increases with temperature. |
| Property | Typical Value/Range | Description |
|---|---|---|
| Volume Resistivity (Ω·m-cm) | 1*1013 | Indicates electrical resistance. Higher values mean better insulation. |
| Dielectric Strength (kV/mm) | 5.8 | Maximum electric field strength withstandable without breakdown. Important for high-voltage insulation. |
| Dielectric Constant (Normal Condition, 1 kHz) | 9 – 10 | Ability to store electrical energy. Higher values store more charge. |
| Property | Typical Value/Range | Description |
|---|---|---|
| Bending Strength (MPa) | 18 MPa | Resistance to bending/breakage. Higher is better. |
| Compressive Strength (MPa) | 50 MPa | Resistance to compression. High strength, suitable for crushing/pressing. |
| Hardness (Moh’s) | 6 Moh’s | Resistance to scratching/abrasion. Moderate scratch resistance. |
| Fracture Toughness | 1.5 – 3.5 MPa·m1/2 | Resistance to crack propagation. Higher is better. |
| Property | Typical Value | Description |
|---|---|---|
| Acid Resistance | Excellent | Maintains structural integrity in strong acids (HCl/H2SO4), high corrosion resistance |
| Alkali Resistance | Moderate | Moderate resistance to NaOH/KOH corrosion, potential surface reactions under long-term exposure |
| Oxidation Resistance | Extremely | Non-reactive with oxygen up to 1200°C, stable at high temperatures |
| Solvent Resistance | Excellent | Chemically inert to water, organic solvents (alcohols/ketones/esters) |
Off-the-shelf components don’t always fit innovative designs. Adcerax specializes in the precision machining of complex Magnesium Oxide Ceramic parts. Equipped with state-of-the-art 5-axis CNC technology and deep material expertise, we can manufacture intricate geometries, achieve tight tolerances (e.g., ±0.05mm), produce fine surface finishes, and create features like internal/external threads and complex channels. Turn your most challenging designs into reality with our custom MgO machining capabilities.
Thanks to its unique properties, our high-purity MgO ceramic is the preferred material for numerous demanding applications:
We supply Magnesium Oxide Ceramic in various standard forms and offer rapid customization to meet your specific needs:
Single-bore, multi-bore, oval, custom profiles.
Solid, various diameters and lengths.
Cut and ground to precise dimensions.
Standard shapes or custom designs.
Manufactured precisely according to your drawings or specifications.
Choosing the right supplier is as critical as choosing the right material. Partnering with us ensures:
Magnesium Oxide (MgO) Ceramics, also known as magnesia ceramics, are a class of technical ceramics known for their excellent thermal conductivity, high electrical resistivity, and good chemical stability at high temperatures. They are often chosen for applications requiring high-performance in demanding environments.
No, MgO is not the same as magnesium.
Magnesium (Mg) is a pure element, a silvery-white alkaline earth metal. It's relatively light and reactive.
Magnesium Oxide (MgO) is a compound formed when magnesium reacts with oxygen (O).It is a kind of ceramic. It's a white powder in its pure form and takes on various forms after processing.
Magnesium oxide is a ceramic, not a metal or polymer. It's an inorganic, non-metallic material formed at high temperatures. Several sources classify it as a "technical ceramic."
MgO Ceramics are typically manufactured by sintering high-purity magnesium oxide powder at high temperatures. Different sintering techniques and post-processing methods can be employed to achieve desired microstructures and properties.The following table shows the specific process：
| Step | Process Description | Process Parameters/Conditions | Key Considerations |
|---|---|---|---|
| 1. Raw Material Preparation | Select high-purity magnesium oxide (MgO) raw material, typically with a purity ≥ 99%. Small amounts of stabilizers (such as Y2O3 or CaO) can be added. | Purity: ≥ 99%; Particle size: 0.1-5 µm (ball milling required) | Avoid introducing impurities (such as Fe2O3, SiO2) to prevent degradation of ceramic properties. |
| 2. Forming | Mix MgO powder with binder and solvent, then form. Common methods include dry pressing, isostatic pressing, or slip casting. | Dry pressing pressure: 100-300 MPa; Isostatic pressing pressure: 150-400 MPa | Control the uniformity of the green density to avoid cracking during sintering. |
| 3. Binder Burnout | Remove organic binders and moisture at low temperature (400-600°C). | Heating rate: 1-5°C/min; Holding time: 2-4 hours | Slow heating is necessary to prevent cracking. Use vacuum or inert atmosphere (e.g., nitrogen) to prevent MgO decomposition. |
| 4. High-Temperature Sintering | Densify at high temperature (1600-2000°C), typically using vacuum sintering or protective atmosphere sintering (e.g., argon). | Sintering temperature: 1600-2000°C; Holding time: 1-4 hours | Strictly control the oxygen partial pressure (low oxygen environment inhibits MgO volatilization) to prevent abnormal grain growth and increased brittleness. |
| 5. Cooling | Slowly cool to room temperature after sintering, controlling the cooling rate (≤ 5°C/min) to avoid thermal stress cracking. | Cooling rate: ≤ 5°C/min | Rapid cooling may cause microcracks, affecting mechanical strength. |
| 6. Post-Processing | Optional steps: surface polishing, coating, or precision machining to improve dimensional accuracy and corrosion resistance. | Surface roughness: Ra ≤ 0.1 µm | Use diamond tools during machining to avoid metal contamination. |
| 7. Property Testing | Measure key properties such as density, flexural strength, thermal conductivity, and dielectric constant. | Density: ≥ 3.58 g/cm³; Flexural strength: ≥ 150 MPa | Use Archimedes' method for density measurement and three-point bending test for strength measurement, ensuring they meet application requirements (e.g., refractory materials or electronic components). |
Supplementary Information
MgO Ceramics are available in various forms, including tubes, rods, plates, crucibles, and custom shapes to meet specific application requirements.
Of course they can be customized.Adcerax has decades of experience in magnesium oxide ceramics for industries like semiconductors and electronics. With advanced facilities and skilled experts, we can meet your specific needs, including complex designs and strict tolerances.
MgO Ceramics offer advantages such as superior thermal performance at high temperatures, excellent electrical insulation properties, and resistance to chemical attack in harsh environments. They are also relatively cost-effective compared to some other high-performance ceramics.The following table shows the performance comparison of other materials：
| Ceramic Type | Magnesium Oxide Ceramic | Aluminum Oxide Ceramic | Zirconium Oxide Ceramic | Silicon Nitride Ceramic | Silicon Carbide Ceramic |
|---|---|---|---|---|---|
| Melting Point (°C) | approx. 2800 | approx. 2050 | approx. 2700 | approx. 1900 | approx. 2800 |
| Mohs Hardness (Moh's) | 5-6 | 9 | 9.2 | 9 - 9.5 | 9.5 |
| Density (g/cm³) | 3.52-3.56 | 3.6-3.98 | 5.6 - 6.02 | 2.6 - 3.2 | 3.2 - 3.4 |
| Coefficient of Thermal Expansion (× 10⁻⁶ / °C) | 13*10⁻⁶ | 7-8 | 10-12 | 2.5 - 3.0 | 4.0 - 4.5 |
| Insulation | Good insulation at high temperatures, room-temperature specific resistance > 10¹⁴Ω·cm, and the resistivity drops sharply with increasing temperature | Good | Ionic conduction at high temperatures, pure ZrO₂ is insulating, and the | Good | Semiconductor |
| Chemical Stability | Strong resistance to corrosion of alkaline metal solutions, easy to hydrate in humid air | Acid- and alkali- resistant | Resistant to corrosion of acidic and neutral substances | High-temperature resistant, corrosion-resistant | High-temperature resistant, corrosion-resistant |
| Thermal Conductivity (W/m·K) | approx. 50 | approx. 24 | approx. 2-3 | approx. 10 - 15 | approx. 100 - 120 |
| Thermal Shock Resistance | Ordinary | Ordinary | Good | Good | Good |
| Application Areas | Smelting crucibles, radar domes, infrared windows, etc. | Cutting tools, molds, electronic ceramics, etc. | Engine components, sensors, fuel cell diaphragms, etc. | High-temperature engines, cutting tools, etc. | Bearings, gas turbine blades, chemical linings, etc. |
| Cost | Medium | Low | High | High | High |
We believe that Adcerax will become your best partner!
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