Pulsed Laser Deposition Deposited Layers of Pseudo-Binary Zinc Oxides and Zinc-Porphyrin for Steel Corrosion Inhibition

CORROSION ◽  
10.5006/3550 ◽  
2020 ◽  
Vol 76 (8) ◽  
pp. 734-741
Author(s):  
Mihaela Birdeanu ◽  
Mirela Vaida ◽  
Aurel Valentin Bîrdeanu ◽  
Eugenia Fagadar-Cosma

Obtaining of ZnTa2O6 and ZnV2O6 pseudo-binary oxide materials by hydrothermal and coprecipitation methods and of Zn(II) 5-pyridyl-10,15,20-tris-(3,4-di-methoxy-phenyl) porphyrin (ZnPydiMeOPP) are presented. Mixed thin films of pseudo-binary oxide materials and Zn-porphyrin were realized by pulsed laser deposition (PLD) technique on steel disks and corrosion tests in 0.1 M HCl solution were performed. The inhibition efficiency (IE) in all cases containing porphyrin was always higher than 80%. The best IE (84.50%) was obtained for the sandwich structure using the hydrothermally obtained ZnV2O6 oxide as the first layer and the ZnPydiMeOPP porphyrin as the second layer. The mechanism of corrosion protection can be explained by the physical/mechanical barrier effect.

2013 ◽  
Vol 209 ◽  
pp. 94-97
Author(s):  
Bhaumik V. Mistry ◽  
Utpal S. Joshi ◽  
S.J. Trivedi ◽  
U.N. Trivedi ◽  
R. Pinto

Resistance switching properties of nanostructured In2Subscript textO3 films grown on Pt and LaNiO3 (LNO) bottom electrodes have been investigated. High quality In2O3/LNO/SiO2 and In2O3/Pt/Ti/SiO2/Si heterostructures were grown by pulsed laser deposition. High purity Ag was thermally evaporated on In2O3 active layer to form top electrode. The Ag/In2O3/M (M = LNO, Pt) structure was characterized by grazing incidence XRD, AFM and cross sectional SEM. Pollycrystalline growth of oxides LNO and In2O3 was confirmed by GIXRD, where as AFM show nanostructured growth with smooth surface morphology. Two terminal I-V characteristics showed reproducible hysteresis suggesting two distinct resistance states in the film. Typical resistance switching ratio (Ron/Roff) of the order of 113 % and 72% have been estimated for In2O3 device grown on LNO and Pt substrates, respectively. The observed resistance switching characteristics offers lot of promise for new class of binary oxide materials with oxide (LNO) as bottom electrode leading to better suitability for nanoelectronics RRAM devices.


2015 ◽  
Vol 106 (13) ◽  
pp. 131601 ◽  
Author(s):  
A. Herklotz ◽  
K. Dörr ◽  
T. Z. Ward ◽  
G. Eres ◽  
H. M. Christen ◽  
...  

1998 ◽  
Author(s):  
Dave H. A. Blank ◽  
Gertjan Koster ◽  
Guus J. H. M. Rijnders ◽  
Horst Rogalla

2002 ◽  
Vol 419 (1-2) ◽  
pp. 160-165 ◽  
Author(s):  
N. Naghavi ◽  
C. Marcel ◽  
L. Dupont ◽  
C. Guéry ◽  
C. Maugy ◽  
...  

2013 ◽  
Vol 49 (8) ◽  
pp. 4586-4589 ◽  
Author(s):  
J. E. Ordonez ◽  
M. E. Gomez ◽  
W. Lopera ◽  
P. Prieto

2005 ◽  
Vol 21 (3) ◽  
pp. 172-175 ◽  
Author(s):  
P. Kuppusami ◽  
S. N. Padhi ◽  
K. Muthukkumaran ◽  
E. Mohandas ◽  
V. S. Raghunathan

2007 ◽  
Vol 254 (3) ◽  
pp. 785-788 ◽  
Author(s):  
Nabil D. Bassim ◽  
Peter K. Schenck ◽  
Eugene U. Donev ◽  
Edwin J. Heilweil ◽  
Eric Cockayne ◽  
...  

Author(s):  
Michael P. Mallamaci ◽  
James Bentley ◽  
C. Barry Carter

Glass-oxide interfaces play important roles in developing the properties of liquid-phase sintered ceramics and glass-ceramic materials. Deposition of glasses in thin-film form on oxide substrates is a potential way to determine the properties of such interfaces directly. Pulsed-laser deposition (PLD) has been successful in growing stoichiometric thin films of multicomponent oxides. Since traditional glasses are multicomponent oxides, there is the potential for PLD to provide a unique method for growing amorphous coatings on ceramics with precise control of the glass composition. Deposition of an anorthite-based (CaAl2Si2O8) glass on single-crystal α-Al2O3 was chosen as a model system to explore the feasibility of PLD for growing glass layers, since anorthite-based glass films are commonly found in the grain boundaries and triple junctions of liquid-phase sintered α-Al2O3 ceramics.Single-crystal (0001) α-Al2O3 substrates in pre-thinned form were used for film depositions. Prethinned substrates were prepared by polishing the side intended for deposition, then dimpling and polishing the opposite side, and finally ion-milling to perforation.


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