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Ionic conduction in anodic oxide films on tantalum in molten LiNO3 + KNO3 + NaNO3 electrolyte

✍ Scribed by R.K. Nigam; R.S. Chaudhary


Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
463 KB
Volume
17
Category
Article
ISSN
0013-4686

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✦ Synopsis


The kinetics of anodic growth of film on tantalum in molten LiNOI, + KNOIl + NaNOI have been studied by employing various cd ratios. accounts satisfactorily for our data. Dewald's double-barrier theory of oxide growth The results are in disagreement with the single-barrier control theory in which space charge is neglected. The kinetics is independent of the electrolyte used. R&urn&-La cinetique de la croissance anodique de films sur tantale, dans le melange fondu LiN08 + KNOJ + NaNO,, a 6th etudike 2t diverses densitts de courant. La theorie de la double barriere de Dewald, pour la croissance de l'oxyde, est en bon accord avec nos resultats. Ceux-ci sont par contre en d&accord avec la theorie de contrOle par simple bat-r&e, ngligeant la charge spatiale. La cinetique apparait independante de 1'6lectrolyte utilise. Zusammenfassung-Man untersuchte die Kinetik des anodischen Schichtwachstums auf Tantal in geschmolzenem LiNO, + KN03 + NaNO, bei verschiedenen Stromdichten. Die Dewald'sche Theorie einer doppelten Barriere beim Oxidwachstum stimmt mit den vorliegsnden


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