The Vaporization of Pyrolytic Graphite

Zavitsanos, P. D.

doi:10.21236/ad0633611

Cited by 8 publications

(1 citation statement)

References 1 publication

(1 reference statement)

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“…The second was used by Blottner 20 with data for the coefficients credited to Zavitsanos 21 . Equilibrium constant expressions for mobile and immobile adsorption are also available …”

Section: Surface Kinetic Modelingmentioning

confidence: 99%

Thermo-chemical ablation during reentrant and high altitude skipping flight

Havstad

Carter

2001

39th Aerospace Sciences Meeting and Exhibit

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Thermo-chemical ablation during reentrant and high altitude skipping flights is treated using a variety of techniques. The solid material response is computed using heat-balance integrals, finite differences, and finite elements. The surface mass loss is computed using curve fits to the standard transport coefficient approach and by a surface kinetic model. Agreement between the approaches, when using the curve fits, is good. All approaches concur that for the skipping trajectory studied there is very little mass loss and surface temperatures remain in a range where the thermal protection system can be reused.

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“…The second was used by Blottner 20 with data for the coefficients credited to Zavitsanos 21 . Equilibrium constant expressions for mobile and immobile adsorption are also available …”

Section: Surface Kinetic Modelingmentioning

confidence: 99%

Thermo-chemical ablation during reentrant and high altitude skipping flight

Havstad

Carter

2001

39th Aerospace Sciences Meeting and Exhibit

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High-temperature mass spectrometry—I. Free vaporization studies of graphites

Wachi¹,

Gilmartin²

1970

Carbon

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Advances in the mass spectrometric study of the laser vaporization of graphite

Pflieger

Sheindlin

Colle

2008

Journal of Applied Physics

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Reliable experimental data on graphite vaporization and especially on carbon vapor composition exist only up to 2500–3000 K. Data measured at higher temperatures are questionable due to several experimental limitations, such as the difficult temperature determination and the not straightforward correlation of measured temperatures and intensities of signals in mass spectra. That is why a new method of high-temperature mass spectrometry with laser vaporization was developed, in order to extend the accessible temperature range while overcoming these limitations and to shed more light on the still poorly known behavior of carbon at high temperatures. Thus, carbon sublimation relative partial pressures of the species C1, C2, C3, C4, and C5 were measured up to 4100 K. Moreover, the values of the relative vaporization coefficients of C1, C2, C3, C4, and C5, estimated by comparison of the experimentally obtained partial pressures with the predicted equilibrium ones, are proposed.

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The Vaporization of Pyrolytic Graphite

Cited by 8 publications

References 1 publication

Thermo-chemical ablation during reentrant and high altitude skipping flight

Thermo-chemical ablation during reentrant and high altitude skipping flight

High-temperature mass spectrometry—I. Free vaporization studies of graphites

Advances in the mass spectrometric study of the laser vaporization of graphite

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