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.
Hello
The measurement of the resistivity of Cu can be done with a resistor bridge diagram Fig. One of the resistances is (R1) the tested resistance. Compensation of the remaining R2, R3 changes until the bridge system is aligned with high precision.
Nowadays, there are many modern instruments for measuring recession.
Wishing for success in scientific work.
Emil Yankov
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