1994
DOI: 10.1109/95.296370
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Contact erosion patterns of Pd material in DC breaking arcs

Abstract: Arc erosion patterns of pure Pd contacts tested with switching inductive load at 20 V, 1 -4 A were determined by means of the SEM, and material transfer was measured with electronic balance. Three types of erosion patterns were observed at the different load current regions. First, the distributed craters occurred on the anode and scattered redeposited mounds surrounded by sprayed particles on the cathode when the current was less than about 2.5 A, which we called a critical transition current because it demon… Show more

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Cited by 38 publications
(2 citation statements)
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“…The formation of a contact weld relies on the arc energy and the tensile strength; hence, it is crucial to investigate the correlation between these parameters and the microstructure. By utilizing the welding force evaluation model, the welding force can be mathematically expressed as follows [ 16 ]: where is the maximum welding force, is the contact material factor, and is the arc and Joule heating energy. As a rule, the arc energy is considerably higher than the Joule heating energy, which means that the total energy can be approximated by the arc energy, denoted as .…”
Section: Resultsmentioning
confidence: 99%
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“…The formation of a contact weld relies on the arc energy and the tensile strength; hence, it is crucial to investigate the correlation between these parameters and the microstructure. By utilizing the welding force evaluation model, the welding force can be mathematically expressed as follows [ 16 ]: where is the maximum welding force, is the contact material factor, and is the arc and Joule heating energy. As a rule, the arc energy is considerably higher than the Joule heating energy, which means that the total energy can be approximated by the arc energy, denoted as .…”
Section: Resultsmentioning
confidence: 99%
“…The formation of a contact weld relies on the arc energy and the tensile strength; hence, it is crucial to investigate the correlation between these parameters and the microstructure. By utilizing the welding force evaluation model, the welding force can be mathematically expressed as follows [16]:…”
Section: Welding Force Analysismentioning
confidence: 99%