1974
DOI: 10.1016/0008-6223(74)90019-0
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Graphite sublimation temperatures, carbon arcs and crystallite erosion

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Cited by 78 publications
(33 citation statements)
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“…While calculating the energies entering the particles from laser irradiation and leaving from thermal radiation are relatively straightforward, estimating the thermal loss due to contact with the substrate is more uncertain. At the threshold of conditioning, we assume the particle temperature is just high enough to reach the sublimation temperature of carbon, 4000 K [8]. Given steady state conditions, the power entering and leaving the particle at this temperature and irradiance are the same, allowing us to estimate the contact conductance with the substrate, see Eq.…”
Section: Discussionmentioning
confidence: 99%
“…While calculating the energies entering the particles from laser irradiation and leaving from thermal radiation are relatively straightforward, estimating the thermal loss due to contact with the substrate is more uncertain. At the threshold of conditioning, we assume the particle temperature is just high enough to reach the sublimation temperature of carbon, 4000 K [8]. Given steady state conditions, the power entering and leaving the particle at this temperature and irradiance are the same, allowing us to estimate the contact conductance with the substrate, see Eq.…”
Section: Discussionmentioning
confidence: 99%
“…Abrahamson proposed the presence near the anodic surface [12] of small crystallites (<3nm), derived from the breakup of the electrode surface during arc operation. He suggested that the observed temperature of the surface was in fact the temperature of these suspended particles, which were at their equilibrium temperature at the arc total pressure (here 1 atmosphere), considerably lower than the expected sublimation temperature of bulk graphite (3950K) because of the surface free energy.…”
Section: Discussionmentioning
confidence: 99%
“…anode brightness temperature [15]. He argued that a cloud of these small crystallites evaporating at 3800 K or less might influence the radiance observed, thus the value of measured temperature.…”
Section: • Gravity Effect Is Negligiblementioning
confidence: 99%