Zobrazeno 1 - 10
of 182
pro vyhledávání: '"J. Lopitaux"'
Publikováno v:
Thin Solid Films. 516:349-354
The main goal of this work is to show the interesting contribution of reflectance infrared spectroscopy to determine the composition of oxide films on metal surfaces. Illustration is reported on oxidation of α 2 -TiAl (Ti75-Al25 at.%) and γ-TiAl (T
Publikováno v:
Revue de Métallurgie. 96:1095-1106
La preoxydation, par le panache d’un plasma d’arc, d’un acier inoxydable austenitique 304L a ete etudiee sur trois etats de surface differents, l’etat poli diamant 1 μm (A), l’etat poli SiC grade 1000 (B) et l’etat sable (C). L’acier l
Utilisation des rayons X pour la mise au point d'un traitement thermochimique d'un acier à roulement
Publikováno v:
Le Journal de Physique IV. :Pr5-147
les sollicitations sans cesse croissantes auxquelles sont soumis les roulements destines a l'industrie aeronautique ont conduit les fabricants de roulements a developper de nouveaux traitements de surface. La nitruration d'une couche cementee trempee
Publikováno v:
Revue de Métallurgie. 95:189-196
On montre comment la spectroscopie infrarouge peut etre utilisee en reflexion lors de l’etude de produits d’oxydation. Elle pallie les faiblesses de la diffraction de rayons X lors de l’etude analytique de produits sous forme amorphe.Elle perme
Publikováno v:
Materials Science Forum. :89-96
Cette etude traite du comportement de deux alliages commerciaux (AISI 430 et AISI 430 Al-Ti) en oxydation isotherme a l'air dans le domaine 800-1000°C. Les profils de concentration XPS, les analyses en diffraction X en incidence rasante, spectroscop
Autor:
J. Boissel, I. Odnevall, M. Lenglet, J. Lopitaux, J. Gautier, M. Carballeira, J. Guinement, C. Leygraf, J. ‐C. Noualhaguet
Publikováno v:
Journal of The Electrochemical Society. 142:3690-3696
A joint effort has been undertaken, involving four laboratories and nine different analytical techniques, aiming at characterizing corrosion products on copper formed in mixed flowing gas test containing Cl{sub 2}, H{sub 2}S, and NO{sub 2}. The resul
Publikováno v:
Journal of The Electrochemical Society. 142:1777-1783
The application of three analytical techniques, x-ray near grazing diffraction, infrared transmission and reflectance spectroscopy, and UV-visible-near-infrared reflectance spectroscopy, to the characterization of cobalt cobaltite, Co 3 O 4 , and of
Publikováno v:
Surface and Interface Analysis. 20:15-20
Fourier transform infrared specular reflectance spectra at variable incidence have been recorded in order to characterize the oxide layers formed on both mechanically polished and etched surfaces of stainless steels (AISI 304 and 316). Depending on t
Publikováno v:
Journal of Solid State Chemistry. 98:252-262
Mossbauer spectrometry, neutron diffraction, XANES, and XPS have led to the determination of the cation distributions of the system Cu 0.5 Mn x Fe 2.5− x O 4 (0≤ x ≤1.5). The three cations are present in both tetrahedral and octahedral sites, a
Publikováno v:
Surface and Interface Analysis. 16:289-292
The study of the oxidation of copper at low temperatures shows that the metal is not recovered by a pure stoichiometric Cu2O but by a copper(I) oxide phase with the same crystalline structure as Cu2O, and that this phase exhibits a very large non-sto