Which instrument is suitable for measuring Copper and Copper alloys resisitivity?
Arvind Bind, I think the question is about measure Cu and Cu based alloys electrical resistivity before and after deformation/extrusion. I was using similar devices (made by me) for corrosion problems research.
Vijay Ponraj , I thing "low resistivity meter" and google may help, you will find this, for example: https://www.mccat.co.jp/global/instrument/resistivity-meters/entry-165.html.
Common resistivity measurements
The three most common resistivity measurements are
1. Surface resistivity.
2. Bulk or volume resistivity, and
3. Contact resistivity
To calculate the resistance R of a wire, we need to know three things: its length – the longer the wire, the greater its resistance
its cross-sectional area A – the greater the area, the less its resistance
the resistivity of the material r – the greater the resistivity, the greater its resistance.
resistance = resistivity × length / area
1. Four probe method
2. Hall Effect
Both are suitable to measure the electrical conductivity of your samples.
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