1974
DOI: 10.1051/rphysap:0197400901031500
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Évaporation du séléniure de zinc en tube ouvert sous flux d'argon et d'hydrogène

Abstract: Abstract. 2014 We have been interested in thermodynamical equilibria describing the transport in vapor phase of a zinc selenide source exposed to an argon or hydrogen flow, at high temperature. We have studied the evaporation of that compound in the low linear velocity range. Then, we have shown the influence of hydrogen with respect to the inert gas and confirmed the use of the most recent thermochemical data for SeH2(g) which account well for our experimental results. Fick's diffusion law has been successfu… Show more

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Cited by 5 publications
(2 citation statements)
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“…Lever's principle (17) of resolution, which is based on Gibb's phase rule and which was improved by Hurle and Mullin (18) was used (19) for the determination of the equilibria constant Kp The values of the partial pressures are calculated for each chemical substance able to exist in a vapor state on the basis of a thermodynamical equilibrium between solid and vapor phase. If "pj" represents the partial pressure of the gaseous species "j", and if "hi" stands for the total number of atoms per unit volume of the constituent 'T' in an elemental or compound form in the gaseous mixture at the output of the two sources, the equations enabling us to give an overall description of the system are:…”
Section: Theoretical Determination Of Composition In Znszse~-~mentioning
confidence: 99%
“…Lever's principle (17) of resolution, which is based on Gibb's phase rule and which was improved by Hurle and Mullin (18) was used (19) for the determination of the equilibria constant Kp The values of the partial pressures are calculated for each chemical substance able to exist in a vapor state on the basis of a thermodynamical equilibrium between solid and vapor phase. If "pj" represents the partial pressure of the gaseous species "j", and if "hi" stands for the total number of atoms per unit volume of the constituent 'T' in an elemental or compound form in the gaseous mixture at the output of the two sources, the equations enabling us to give an overall description of the system are:…”
Section: Theoretical Determination Of Composition In Znszse~-~mentioning
confidence: 99%
“…Il suffit de calculer à partir d'une équation analogue à (2), les flux de rétrodiffusion G2 et de simple diffusion G2, dans les zones de transfert 2* et 2 ou sont supposées régner des températures moyennes T2 et T2. Nous avons présenté ces calculs dans un article déjà paru [20]. La sommation des trois flux Gi, G2 et G2 permet de rendre compte de toute la gamme de vitesse explorée expérimentalement, Compte tenu des résultats obtenus, les hypothèse de départ semblent relativement justifiées et il semble même que ce modèle puisse être appliqué avec succès au transfert d'autres matériaux.…”
Section: Nous Trouvons Soitunclassified