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ePaper created 2015-05-31, 08:30:03 | version 1.38.0
9 Climbing the Highest Peaks A comparative test between copper and graphite electrodes shows the difference among the peak densities for a given roughness (Ra value). Overview Electrode Mode Roughness in µm Ra Peak number in units/cm 2CE2150 Cap(-) 3.06 63 Hollow copper profile 2CE2150 Impulse(+) 3.06 76 Hollow copper profile 1GE0100 Cap(-) 3.02 104 Plangraph 1 2GE0100-7228 Cap(-) 3.06 120 Plangraph 2 Comparison of electrode types: 2CE2150 Hollow profile copper 1GE0100 Plangraph 1 (solid graphite) 2GE0100-7228 Plangraph 2 (72% graphite/28% copper) The result The hollow profile copper electrodes achieve a peak density of only 63 peaks per cm in Cap (-) mode with a roughness of approx. 3.0 µm Ra. In the same mode, Plangraph 1 electrodes (solid graphite) can achieve a much greater peak density of 104 peaks per cm. Plangraph 2 electrodes (72% graphite/28% copper) produce an even higher peak density of 120 peaks per cm. 2CE2150 Cap(-) 3.0663 2CE2150 Impulse(+) 3.0676 1GE0100 Cap(-) 3.02104 2GE0100-7228 Cap(-) 3.06120