Anodic dissolution of active metals during plastic flow: iron and nickel
β Scribed by A. Windfeldt
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 534 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
Studies
have been made on the effect of plastic flow on the anodic dissolution of active iron and nickel in acid chloride solutions. For both metals, plastic flow has a stimulating effect on the dissolution reaction. The effect increases with the ratio of strain rate to dissolution rate. It is not lasting, but disappears shortly after the deformation process is stopped. The results are in accordance with a model involving direct dissolution at kinks in crystal steps in the surface. R&arm-Etude de l'effet dun ecoulement plastique sur la dissolution anodique de Fe ou Ni actifs en solution HCl. Cet effet eat stimulant dam les deux cas. 11 croit avec le rapport de la vitesse de contrainte a la vitease de dissolution. 11 disparait assez vite quand on arr&te le processus de deformation. Un modele cristallin approprie rend compte de ces resultats. Zusanunenfassung-Der Einfluss plastischer Verformung auf die anodische Auflosungsgeschwindigkeit von aktivem Eisen und Nickel in sauren Chlorid-Lbsungen wurde untersucht. Rei bciden Metallen nimmt unter plastischer Verformung die Auflosungsgeschwindigkeit zu und verstark sich dem Verhlltnis zwischen Spannungszunahme und Aufliisungsgeschwindigkeit entsprechend. Der Effekt ist nicht permanent, sondem verschwindet kurz nach Abbruch des Verformungsvorgangea. Die Ergebnisse sind in Ubereinstimmung mit einem Modell, welches direkte Auflijsung an "kinks" in Kristallstufen der ObertWhe postuliert.
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