Sources for resistivity of W depending on temperature

In summary, resistivity is a measure of a material's ability to resist the flow of electrical current and is typically represented by the Greek letter rho (ρ) and measured in ohm-meters (Ω⋅m). Temperature can significantly affect resistivity as higher temperatures cause atoms and molecules to vibrate more, creating more obstacles for the flow of electrons. There are various sources for resistivity data for different temperatures, including scientific journals, textbooks, and online databases. To determine the resistivity of a material at a specific temperature, you can use the temperature coefficient of resistivity (TCR) and by multiplying it by the resistivity at a reference temperature, you can calculate the resistivity at a different temperature. Other factors such
  • #1
Zoroaster
10
0
Hello everyone

I am trying to do an experiment involving a W bulb, in which I am completely dependent of knowing the temperature-resistivity relation of Tungsten in the temperature range 300 - 2500 K. The CRC handbook has some tables, but they have few data points and correlate poorly with each other (in different editions). Does anyone here know where else I can find a good table (or formula, although a linear relation is not precise enough)?

Any help would be much appreciated!

-Zoroaster
 
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  • #3
Thanks!
 

1. What is resistivity?

Resistivity is a measure of a material's ability to resist the flow of electrical current. It is typically represented by the Greek letter rho (ρ) and is measured in ohm-meters (Ω⋅m).

2. How does temperature affect resistivity?

Temperature can have a significant impact on the resistivity of a material. In general, as temperature increases, resistivity also increases. This is because higher temperatures cause atoms and molecules to vibrate more, which creates more obstacles for the flow of electrons.

3. What are some common sources for resistivity data for different temperatures?

There are several sources for resistivity data for different temperatures, including scientific journals, textbooks, and online databases. Some commonly used sources include the National Institute of Standards and Technology (NIST) website and the CRC Handbook of Chemistry and Physics.

4. How do I determine the resistivity of a material at a specific temperature?

To determine the resistivity of a material at a specific temperature, you can use the temperature coefficient of resistivity (TCR), which is a measure of how much a material's resistivity changes with temperature. By multiplying the TCR by the resistivity at a reference temperature, you can calculate the resistivity at a different temperature.

5. Are there any factors besides temperature that can affect the resistivity of a material?

Yes, there are several other factors that can affect the resistivity of a material, including impurities, defects, and mechanical stress. These can all create additional obstacles for the flow of electrons and therefore increase the material's resistivity.

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