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Download or read book ETUDE ELECTROCHIMIQUE ET PHOTOELECTROCHIMIQUE DE COUCHES D OXYDES DE CUIVRE SEMI CONDUCTRICES ROLE D UN INHIBITEUR DE CORROSION DU CUIVRE written by BENOIT.. MILLET and published by . This book was released on 1994 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA PREMIERE PARTIE DU TRAVAIL EST CONSACREE A L'ETUDE DE LA STRUCTURE ET DES PROPRIETES DES FILMS MINCES D'OXYDE DE CUIVRE DEVELOPPES EN MILIEU NACL 0,5M AERE. L'ETUDE DU PROCESSUS DE CORROSION, APRES UNE HEURE D'IMMERSION, PAR DES METHODES ELECTROCHIMIQUES MONTRE QUE LE MECANISME ANODIQUE PROCEDE EN DEUX ETAPES SUCCESSIVES ET EST CONTROLE PAR LA DIFFUSION DE CUCL#-#2 A PARTIR DE L'ELECTRODE. LE MECANISME CATHODIQUE EST LA REDUCTION DU DIOXYGENE DISSOUS, REACTION CONTROLEE PAR LA CINETIQUE. LE COMPORTEMENT DE CU#2O EST ETUDIE PAR COULOMETRIE, PHOTOELECTROCHIMIE ET DIVERSES TECHNIQUES D'ANALYSES DE SURFACE (MEB, DIFFRACTION X, INFRA-ROUGE, ESCA). LA REACTION DE FORMATION DE L'OXYDE SUIT INITIALEMENT UNE LOI D'AVANCEMENT LINEAIRE, PUIS L'EPAISSEUR SE STABILISE A LONG TERME, TANDIS QU'UNE COUCHE DE PARATACAMITE SE DEVELOPPE A SON TOUR. LES PRINCIPALES CARACTERISTIQUES DE CU#2O MISES EN EVIDENCE SONT SA POROSITE, SON CARACTERE SEMI-CONDUCTEUR RELIE AU MODE DE FORMATION DE L'OXYDE: DE TYPE N POUR L'OXYDE FORME A L'INTERFACE METAL/OXYDE, DE TYPE P POUR CELUI DEVELOPPE PAR PRECIPITATION DES IONS DU CUIVRE FORMES A L'INTERFACE OXYDE/SOLUTION. ON TROUVE ALORS UNE COUCHE DUALE N-P QUI EXPLIQUE L'ARRET DE CROISSANCE LORSQUE LES EPAISSEURS DES DEUX FILMS SONT EGALES. DANS UNE DEUXIEME PARTIE, LE COMPORTEMENT DU CUIVRE EN PRESENCE DE BENZOTRIAZOLE (BTA), INHIBITEUR DE LA CORROSION DU CUIVRE, EST ANALYSE. LES PROCESSUS AUX ELECTRODES SONT FORTEMENT MODIFIES: LES REACTIONS ANODIQUE ET CATHODIQUE SONT SOUS CONTROLE CINETIQUE. LA STRUCTURE DOUBLE P ET N POUR L'OXYDE APPARAIT PRESQUE INSTANTANEMENT. LA FORMATION D'UN COMPLEXE ENTRE LES IONS CUIVREUX ET LE BTA, ET PROBABLEMENT D'UN COMPLEXE SUPEROXYDE ENTRE LES IONS CUIVRIQUE, L'OXYGENE ET LE BTA, EST A L'ORIGINE DU DEVELOPPEMENT D'UN OXYDE TRES MINCE ET TRES HERMETIQUE, DONT SONT ABSENTS LES IONS CHLORURE. UN MODELE EST PROPOSE POUR EXPLIQUER LE COMPORTEMENT PHOTOELECTROCHIMIQUE DES FILMS SUPERFICIELS

Download or read book ETUDE ELECTROCHIMIQUE DE COUCHES D OXYDES SUR ANTIMONIURE D INDIUM written by JOELLE.. SIVINIANT MICHEL and published by . This book was released on 1983 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE VOLTAMPEROMETRIQUE DE LA FORMATION ET DE LA REDUCTION DES OXYDES ANODIQUES SUR L'ANTIMONIURE D'INDIUM. MISE AU POINT ET ETUDE D'UN MODELE DE CROISSANCE DES FILMS ANODIQUES. UTILISATION, DE PLUS, DE SPECTROSCOPIE DE PHOTOELECTRONS ESCA, DE MESURES ELLIPSOMETRIQUES "IN SITU" ET DE MESURES DES CAPACITES D'INTERFACE POUR MIEUX CONNAITRE LES POSSIBILITES D'UTILISATION DES FILMS D'OXYDES

Download or read book Etude par voltamm trie cyclique et par spectroscopie uv visible de r flexion in situ de la formation anodique d oxydes de fer en milieu aqueux written by ALMIR.. SPINELLI and published by . This book was released on 1992 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE COMPORTEMENT ELECTROCHIMIQUE DU FER EN MILIEU ALCALIN ET EN MILIEU ACIDE A ETE SUIVI IN SITU PAR VOLTAMMETRIE CYCLIQUE ET PAR SPECTROSCOPIE UV-VISIBLE DE REFLEXION. LES ETUDES VOLTAMMETRIQUES ONT DEMONTRE LA COMPLEXITE DU SYSTEME FE/NAOH. PLUSIEURS REACTIONS D'OXYDO/REDUCTION, CONTROLEES PAR UN COUPLAGE ADSORPTION-DIFFUSION, ONT LIEU A L'INTERFACE. LA PLUPART D'ENTRE ELLES ONT UN CARACTERE IRREVERSIBLE. LES ETUDES SPECTROSCOPIQUES ONT PERMIS D'IDENTIFIER CERTAINS COMPOSES PRESENTS DANS LA COUCHE PASSIVANTE. LA COMPOSITION DE CETTE COUCHE EST ESSENTIELLEMENT LA MEME, AUSSI BIEN EN MILIEU ACIDE QU'EN MILIEU ALCALIN. DES LOGICIELS SPECIALEMENT CONCUS ONT PERMIS L'INTERFACAGE ENTRE LES EXPERIENCES DE VOLTAMMETRIE ET DE SPECTROSCOPIE

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Download or read book Optics at the solid liquid interfaces written by and published by . This book was released on 1977 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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