Ceramic that is electrical conductor?

In summary, there are some ceramics that have both high thermal insulation and good electrical conductivity, but they may be limited to certain mechanisms. The properties of a material can also be affected by its structure, such as in the case of aero-graphite. Ultimately, the definition of "good" or "bad" for these properties may vary.
  • #1
fysik
73
0
hello!

is there a high thermal insulator material, like ceramics, that is also a good electricity conductor?

or these two things, thermal insulation and electrical conductivity, are mutually exclusive?

thanks!
 
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  • #3
Although it's thermal properties come partly from trapping air and/or pore size.

Some ceramics are semiconductors or conductors if doped.
 
  • #4
As long as the electrical conduction is due to free electrons, the ratio between the two conductivity is relatively constant (Wiedeman-Franz law).
You may have a ceramic with electric conduction due to other mechanisms (like "hopping"). But I don't see why the carriers of charge responsible for electrical conduction won't conduct heat as well.
In the end, it depends on what you mean by "good" and "bad" when applied to the two properties (thermal and electrical conduction).
A composite like aero-graphite may have a thermal conductivity lower than that of a bloc of graphite of the same size. But the electrical conductivity will be also reduced by the air in the structure.
 

FAQ: Ceramic that is electrical conductor?

1. What is a ceramic that is an electrical conductor?

A ceramic that is an electrical conductor is a type of ceramic material that has the ability to conduct electricity. This is a unique characteristic, as most ceramics are known for their insulating properties. This type of ceramic typically contains metallic elements or compounds, such as copper or silver, which allow for the flow of electricity.

2. How is a ceramic that is an electrical conductor made?

A ceramic that is an electrical conductor is typically made through a process called doping, where metallic elements or compounds are added to the ceramic material. This can be done through mixing the metallic elements with the ceramic powder before it is formed, or by impregnating the already formed ceramic with the metallic elements.

3. What are the advantages of using a ceramic that is an electrical conductor?

There are several advantages to using a ceramic that is an electrical conductor. These include high temperature resistance, chemical resistance, and high strength. This type of ceramic is also lightweight and can be made into complex shapes, making it useful in a variety of applications.

4. What are common uses for a ceramic that is an electrical conductor?

Ceramics that are electrical conductors have a wide range of uses. They are commonly used in electronic components such as capacitors, resistors, and inks for printed circuit boards. They are also used in high temperature applications, such as in furnace heating elements and spark plugs.

5. How does a ceramic that is an electrical conductor compare to other types of conductors?

Ceramics that are electrical conductors have several advantages over other types of conductors. They have a higher temperature resistance than most metals, making them useful in high heat applications. They also have better chemical resistance, making them suitable for use in harsh environments. However, they do have a lower conductivity compared to metals, so they are typically used in low voltage applications.

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