Influence of environmental factors
Resistivity of metals and alloys

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K710 V2 Article

Influence of environmental factors


Resistivity of metals and alloys

Author : Jean-Charles DELOMEL

Publication date: October 10, 2009 | Lire en français

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4. Influence of environmental factors

The IEC 60468 standard specifies in detail the operating conditions to be respected, particularly with regard to temperature, which is the fundamental parameter. However, nothing is specified for other parameters such as pressure, magnetic field, etc., so it's safe to assume that their natural variations have no impact on measurements. However, extreme conditions can influence the resistivity of certain metals.

4.1 Temperature. Introduction of the temperature coefficient

The higher the temperature, the greater the thermal vibration of the lattice ions and the more the passage of conduction electrons is impeded. Resistivity is a function of temperature q. In most cases, ρ is a function that varies in q 5 up to 100...

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