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Application of high thermal conductivity magnesium oxide in ceramics

High-thermal-conductivity magnesium oxide (MgO) is a versatile material with a wide range of applications in ceramics. Its high thermal conductivity, which is about twice that of alumina, makes it an ideal material for applications where efficient heat dissipation is crucial. In addition, MgO is also a refractory material with excellent resistance to high temperatures and corrosive environments.

Alumina ceramic

Here are some of the key applications of high-thermal-conductivity Magnesium Oxide in ceramics:

① Power electronics: magnesium oxide is used as a substrate material for power electronics devices due to its high thermal conductivity and ability to withstand high temperatures. This allows heat generated by the devices to be efficiently dissipated, preventing them from overheating and malfunctioning.

② LEDs: magnesium oxide is used in the fabrication of light-emitting diodes (LEDs) as a substrate and also as a component of the phosphor layer. Its high thermal conductivity helps to dissipate heat generated by the LED’s active layer, improving the device’s performance and lifespan.

③ Infrared windows: magnesium oxide is used in the fabrication of infrared windows and lenses due to its high transparency to infrared radiation. This makes it a valuable material for applications such as thermal imaging systems, infrared communication devices, and infrared lasers.

④ Microwave components: magnesium oxide is used in the fabrication of microwave components due to its low dielectric constant and high electrical resistivity. This makes it a suitable material for applications where high frequency signals need to be transmitted without distortion.

⑤ Biomedical implants: magnesium oxide is used in the fabrication of biomedical implants due to its biocompatibility and ability to promote bone growth. It is also used as a filler material in orthopedic implants to improve their strength and durability.

In addition to these specific applications, high-thermal-conductivity MgO is also used in a variety of other applications, including:

  • Heat sinks for electronic devices
  • Ablation shields for lasers
  • Furnace linings
  • Refractory bricks
  • Ceramic crucibles

The high thermal conductivity, refractory properties, and biocompatibility of magnesium oxide make it a valuable material for a wide range of applications in ceramics. As research continues to develop new and improved magnesium oxide materials, its applications are likely to expand even further in the future.

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