METALLIC CATHODE SURFACE MODIFICATION BY USING LOW-PRESSURE PULSED VACUUM ARC DISCHARGE
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional de Colombia
2012
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| _version_ | 1876424433580638208 |
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| author | LUIS ALPIDIO GARCIA |
| author_facet | LUIS ALPIDIO GARCIA |
| contents | METALLIC CATHODE SURFACE MODIFICATION BY USING LOW-PRESSURE PULSED VACUUM ARC DISCHARGE LUIS ALPIDIO GARCIA DANIEL ESCOBAR RINCÓN JHONATTAN DE LA ROCHE YEPES PEDRO JOSÉ ARANGO ARANGO ELISABETH RESTREPO PARRA Ingeniería spots Morphology arc voltage metallic cathodes Electrical discharges in a pulsed vacuum arc system at low pressure were produced using a peak current of 100A with pulses of 30 ms. Discharges were carried out applying a voltage of 104 V between the electrodes. Materials used as cathodes were Ti, Zr, Ni, Cu, Mo, and W. The cathodes’ morphology after the discharge production was studied using the scanning electron microscopy (SEM) technique. Ti and Zr presented the highest erosion. Moreover, circular craters on Ni and Mo cathodes were observed and a region of the Zr cathode, with high erosion and a high quantity of craters was analyzed. The discharge voltage for each material was measured, obtaining arc voltage values. Finally, relationships between arc voltages and some material characteristics such as the melting point and the boiling point were observed, presenting an exponential tendency. 2012 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49624953012 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.176 Vol.79 |
| format | Artículo científico |
| id | redalyc_49624953012 |
| institution | Redalyc |
| language | en |
| publishDate | 2012 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | METALLIC CATHODE SURFACE MODIFICATION BY USING LOW-PRESSURE PULSED VACUUM ARC DISCHARGE LUIS ALPIDIO GARCIA Ingeniería spots Morphology arc voltage metallic cathodes METALLIC CATHODE SURFACE MODIFICATION BY USING LOW-PRESSURE PULSED VACUUM ARC DISCHARGE LUIS ALPIDIO GARCIA DANIEL ESCOBAR RINCÓN JHONATTAN DE LA ROCHE YEPES PEDRO JOSÉ ARANGO ARANGO ELISABETH RESTREPO PARRA Ingeniería spots Morphology arc voltage metallic cathodes Electrical discharges in a pulsed vacuum arc system at low pressure were produced using a peak current of 100A with pulses of 30 ms. Discharges were carried out applying a voltage of 104 V between the electrodes. Materials used as cathodes were Ti, Zr, Ni, Cu, Mo, and W. The cathodes’ morphology after the discharge production was studied using the scanning electron microscopy (SEM) technique. Ti and Zr presented the highest erosion. Moreover, circular craters on Ni and Mo cathodes were observed and a region of the Zr cathode, with high erosion and a high quantity of craters was analyzed. The discharge voltage for each material was measured, obtaining arc voltage values. Finally, relationships between arc voltages and some material characteristics such as the melting point and the boiling point were observed, presenting an exponential tendency. 2012 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49624953012 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.176 Vol.79 |
| title | METALLIC CATHODE SURFACE MODIFICATION BY USING LOW-PRESSURE PULSED VACUUM ARC DISCHARGE |
| topic | Ingeniería spots Morphology arc voltage metallic cathodes |
| url | https://www.redalyc.org/articulo.oa?id=49624953012 |