What Is the Permittivity of Al2O3 Over 95% Polished?

In summary, permittivity is a measure of a material's ability to store an electric field. Alumina >95% refers to a type of alumina that is composed of at least 95% pure aluminum oxide and is commonly used as an insulating material due to its high permittivity. It is typically measured using a capacitance meter, with factors such as temperature, frequency, and impurities affecting its value. Applications of alumina >95% with high permittivity include electronic devices, capacitors, sensors, and ceramic materials for industrial use. While generally considered safe, prolonged exposure to high levels of alumina dust may have health concerns. Proper safety measures should be followed when handling and using alumina >95%
  • #1
HPRF
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Hi

I was wondering if anyone could tell me the permittivity of Al2O3 >95% polished, or how to calculate it? Any useful electrical properties websites or books would be much appreciated.

Also I was wondering if the the permittivity was frequency dependent?

Thanks in advance
 
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  • #2

Related to What Is the Permittivity of Al2O3 Over 95% Polished?

What is permittivity of alumina >95%?

Permittivity is a measure of a material's ability to store an electric field. Alumina >95% refers to a type of alumina that is composed of at least 95% pure aluminum oxide. It is commonly used as an insulating material due to its high permittivity.

How is permittivity of alumina >95% measured?

Permittivity is typically measured using a device called a capacitance meter. This involves measuring the capacitance of a capacitor filled with the alumina >95% material. The higher the measured capacitance, the higher the permittivity of the material.

What factors can affect the permittivity of alumina >95%?

The permittivity of alumina >95% can be affected by factors such as temperature, frequency of the electric field, and impurities in the material. Higher temperatures and frequencies generally result in a decrease in permittivity, while impurities can cause variations in the measured value.

What are the applications of alumina >95% with high permittivity?

Alumina >95% with high permittivity is commonly used in electronic devices as an insulating material. It is also used in the production of capacitors, sensors, and other electronic components. Additionally, it is used in the manufacturing of ceramic materials for various industrial applications.

Are there any health concerns associated with alumina >95% and its permittivity?

Alumina >95% is generally considered safe for use in electronic devices and industrial applications. However, prolonged exposure to high levels of alumina dust may cause respiratory issues. It is important to follow proper safety measures when handling and using alumina >95% materials.

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