Structural characterization of Co100−xFex nano-oxide layer

2006 ◽  
Vol 99 (8) ◽  
pp. 08R703 ◽  
Author(s):  
Hiroaki Endo ◽  
Masaaki Doi ◽  
Naoya Hasegawa ◽  
Masashi Sahashi
Keyword(s):  
Oxide Layer ◽  
Structural Characterization ◽  
Nano Oxide

High resolution structural characterization of giant magnetoresistance structures containing a nano-oxide layer

2007 ◽  
Vol 91 (1) ◽  
pp. 011905 ◽  
Author(s):  
C. Y. You ◽  
A. Cerezo ◽  
P. H. Clifton ◽  
L. Folks ◽  
M. J. Carey ◽  
...  
Keyword(s):  
High Resolution ◽  
Oxide Layer ◽  
Structural Characterization ◽  
Giant Magnetoresistance ◽  
Nano Oxide

scholarly journals Structural Characterization of Iron Oxide Grown On 18% Ni-Co-Mo-Ti Ferrous Base Alloy Aged Under Superheated Steam Atmosphere

2021 ◽  
Author(s):  
Andréia de Souza Martins Cardoso ◽  
Hugo Ribeiro da Igreja ◽  
Pedro Soucasaux Pires Garcia ◽  
Rodrigo Chales ◽  
Juan Manuel Pardal ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Oxide Layer ◽  
Structural Characterization ◽  
Base Alloy ◽  
Bulk Material ◽  
Wear Testing ◽  
Material Surface ◽  
Isotopic Enrichment ◽  
X Ray

Abstract 18% Ni-Co-Mo-Ti Ferrous base alloys are special materials, widely used in the industry of ​​isotopic enrichment after specific annealing and aging thermal treatment. The desirable high mechanical properties can then be attained by adequate aging heat treatment, answering the structural materials specifications required by defense applications in aerospace and nuclear engineering. For instance, the isotopic enrichment, in rocket engine envelope application, when associated with high temperature and chemical residues like acidic solutions, can induce corrosion and hydrogen embrittlement in martensite structures. To limit these corrosion and hydrogen embrittlement phenomena, an adherent and protective layer of iron oxides can be grown on the material surface by using adequate atmosphere during the aging treatment. Due to its application in strategic areas, the characterization of these oxide layers in maraging steels is of importance as well as the understanding of their growth kinetics. For this purpose, several techniques, such as Optical Microscopy (OM), Scanning Electron Microscopy (SEM), Glow Discharge Optical Emission Spectroscopy (GDOES), Microabrasive wear testing, Hardness, Grazing Incidence X-ray Diffraction (GIXRD) and X-ray Photoelectron Spectroscopy (XPS), have been performed for chemical and structural characterization of the oxide films formed after vapor exposed thermal aging at 510°C . The oxide layer consists mostly in two sub-layers composed by magnetite (Fe3O4) and an external layer of hematite (Fe2O3). A thick interface between the oxide layer and the bulk is enriched in Ti and Mo, whereas the analyses of deep bulk material show an enriched area with Ni and Co.

Molecular beam epitaxy of SrTiO3 on GaAs(001): GaAs surface treatment and structural characterization of the oxide layer

2014 ◽  
Vol 563 ◽  
pp. 2-5 ◽  
Author(s):  
L. Louahadj ◽  
R. Bachelet ◽  
P. Regreny ◽  
L. Largeau ◽  
C. Dubourdieu ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Surface Treatment ◽  
Oxide Layer ◽  
Structural Characterization ◽  
Molecular Beam ◽  
Gaas Surface

Characterization of nano-oxide layer in specular spin valve multilayer

2005 ◽  
Vol 475 (1-2) ◽  
pp. 251-255 ◽  
Author(s):  
D.H. Lee ◽  
S.Y. Yoon ◽  
J.H. Kim ◽  
S.J. Suh
Keyword(s):  
Oxide Layer ◽  
Spin Valve ◽  
Nano Oxide

Structural characterization of nano-oxide layers in PtMn based specular spin valves

2005 ◽  
Vol 97 (10) ◽  
pp. 10N706 ◽  
Author(s):  
Min Zhou ◽  
Lifan Chen ◽  
Zhitao Diao ◽  
Chang-Man Park ◽  
Yiming Huai
Keyword(s):  
Structural Characterization ◽  
Spin Valves ◽  
Oxide Layers ◽  
Nano Oxide

Characterization of a Nano-Oxide Layer in a Pseudo Spin Valve by Complex Magneto-Impedance Spectroscopy

2006 ◽  
Vol 42 (10) ◽  
pp. 2624-2626 ◽  
Author(s):  
W.C. Chien ◽  
T.Y. Peng ◽  
L.C. Hsieh ◽  
C.K. Lo ◽  
Y.D. Yao
Keyword(s):  
Impedance Spectroscopy ◽  
Oxide Layer ◽  
Spin Valve ◽  
Nano Oxide

New ultrastructural findings about Borrelia burgdorferi by cryofixation, negative staining, thin sectioning and scanning techniques

1990 ◽  
Vol 48 (3) ◽  
pp. 582-583
Author(s):  
S. F. Hayes ◽  
M. D. Corwin ◽  
T. G. Schwan ◽  
D. W. Dorward ◽  
W. Burgdorfer
Keyword(s):  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Structural Characterization ◽  
Negative Staining ◽  
Low Speed ◽  
Thin Sectioning ◽  
Ultrastructural Findings

Characterization of Borrelia burgdorferi strains by means of negative staining EM has become an integral part of many studies related to the biology of the Lyme disease organism. However, relying solely upon negative staining to compare new isolates with prototype B31 or other borreliae is often unsatisfactory. To obtain more satisfactory results, we have relied upon a correlative approach encompassing a variety EM techniques, i.e., scanning for topographical features and cryotomy, negative staining and thin sectioning to provide a more complete structural characterization of B. burgdorferi.For characterization, isolates of B. burgdorferi were cultured in BSK II media from which they were removed by low speed centrifugation. The sedimented borrelia were carefully resuspended in stabilizing buffer so as to preserve their features for scanning and negative staining. Alternatively, others were prepared for conventional thin sectioning and for cryotomy using modified procedures. For thin sectioning, the fixative described by Ito, et al.

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