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| Abstract No.: |
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Scheduled at:
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Wednesday, September 28, 2011, Saal C2.2 9:00 AM
Characterization & Testing 3
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| Title: |
Testing of the electric conductivity of metal coatings
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| Authors: |
Fabian Trenkle* / obz innovation gmbh, Germany
Sven Hartmann / OBZ Innovation GmbH, Germany
Hans-Peter Vollmar/ Helmut Fischer GmbH, Germany
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| Abstract: |
In recent years highly electrically conductive coatings have become more and more important for various applications. This development allows a widespread use of highly conductive metal coatings for industrial applications nowadays.
For the application development and the quality control of such coatings, a device is required which can measure the electric conductivity. For this purpose a handheld device for measuring the electric conductivity of non-ferrous metals in a non-destructive manner was tested. The measurement principle is based on an eddy current sensor which allows determining the electric conductivity within seconds. The method fulfills the demands for using it in the environment of a job shop for thermal spraying. Coatings applied with different thermal spraying methods like cold gas, hvof, arc or flame spraying have been examined. Conditions for spraying highly electrically conducting coatings have been analyzed (e.g. the influence of the oxygen content of the powder). Applications for the use of this device are presented along with experiences at obz innovation gmbh.
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