An Electrochemical and XPS Investigation of Sputter Deposited Ni44 Fe32Cr11P8B5 on 304 Stainless Steel

1986 ◽  
Vol 80 ◽  
Author(s):  
P. V. Nagarkar ◽  
R. M. Latanision
Keyword(s):  
Stainless Steel ◽  
Photoelectron Spectroscopy ◽  
Corrosion Behaviour ◽  
304 Stainless Steel ◽  
Surface Layers ◽  
X Ray ◽  
Electrochemical Testing ◽  
Sputter Deposited ◽  
Constituent Elements ◽  
Steel Substrates

AbstractAn Ni44 Fe32Cr11P8B5 (at.%) alloy was sputter deposited on to water cooled 304 stainless steel substrates. Electrochemical testing was performed in 0.1N H2So4 with and without the addition of O.06N NaCI. The surface layers of specimens polarized into the active and passive regions of the anodic polarization curves were analyzed using x-ray photoelectron spectroscopy (XPS) to check for preferential dissolution and possible segregation of the constituent elements. A significant improvement in the overall corrosion behaviour of 304 stainless steel was observed due to the sputter deposited layer.

scholarly journals Silica-Copper Oxide Composite Thin Films as Solar Selective Coatings Prepared by Dipping Sol Gel

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
E. Barrera-Calva ◽  
J. Méndez-Vivar ◽  
M. Ortega-López ◽  
L. Huerta-Arcos ◽  
J. Morales-Corona ◽  
...  
Keyword(s):  
Thin Films ◽  
Stainless Steel ◽  
Copper Oxide ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Silica Matrix ◽  
Composite Thin Films ◽  
X Ray ◽  
Molar Ratios ◽  
Steel Substrates

Silica-copper oxide (silica-CuO) composite thin films were prepared by a dipping sol-gel route using ethanolic solutions comprised TEOS and a copper-propionate complex. Sols with different TEOS/Cu-propionate (Si/Cu) molar ratios were prepared and applied on stainless steel substrates using dipping process. During the annealing process, copper-propionate complexes developed into particulate polycrystalline CuO dispersed in a partially crystallized silica matrix, as indicated by the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses. The gel thermal analysis revealed that the prepared material might be stable up to400°C. The silica-CuO/stainless steel system was characterized as a selective absorber surface and its solar selectivity parameters, absorptance (α), and emittance (ε) were evaluated from UV-NIR reflectance data. The solar parameters of such a system were mostly affected by the thickness and phase composition of theSiO2-CuO film. Interestingly, the best solar parameters (α= 0.92 andε= 0.2) were associated to the thinnest films, which comprised a CuO-Cu2Omixture immersed in the silica matrix, as indicated by XPS.

X-ray photoelectron spectroscopy studies of hard coatings formed by titanium implantation on 304 stainless steel

1986 ◽  
Vol 141 (1) ◽  
pp. 59-69 ◽  
Author(s):  
M.R Nair ◽  
D.C Kothari ◽  
A.A Rangwala ◽  
K.B Lal ◽  
P.D Prabhawalkar ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Photoelectron Spectroscopy ◽  
Hard Coatings ◽  
304 Stainless Steel ◽  
X Ray ◽  
Spectroscopy Studies

scholarly journals Growth of MWCNTs on Flexible Stainless Steels without Additional Catalysts

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Udomdej Pakdee ◽  
Surasak Chiangga ◽  
Suchat Suwannatus ◽  
Pichet Limsuwan
Keyword(s):  
Stainless Steel ◽  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Steel Substrate ◽  
Carbon Film ◽  
Chemical Vapor ◽  
Multiwalled Carbon ◽  
Sem Images ◽  
X Ray ◽  
Steel Substrates

Multiwalled carbon nanotubes (MWCNTs) were synthesized on austenitic stainless steel foils (Type 304) using a home-built thermal chemical vapor deposition (CVD) under atmospheric pressure of hydrogen (H2) and acetylene (C2H2). During the growth, the stainless steel substrates were heated at different temperatures of 600, 700, 800, and 900°C. It was found that MWCNTs were grown on the stainless steel substrates heated at 600, 700, and 800°C while amorphous carbon film was grown at 900°C. The diameters of MWCNTs, as identified by scanning electron microscope (SEM) images together with ImageJ software program, were found to be 67.7, 43.0, and 33.1 nm, respectively. The crystallinity of MWCNTs was investigated by an X-ray diffractometer. The number of graphitic walled layers and the inner diameter of MWCNTs were investigated using a transmission electron microscope (TEM). The occurrence of Fe3O4 nanoparticles associated with carbon element can be used to reveal the behavior of Fe in stainless steel as catalyst. Raman spectroscopy was used to confirm the growth and quality of MWCNTs. The results obtained in this work showed that the optimum heated stainless steel substrate temperature for the growth of effective MWCNTs is 700°C. Chemical states of MWCNTs were investigated by X-ray photoelectron spectroscopy (XPS) using synchrotron light.

Diamond deposition on Ni/Ni-diamond coated stainless steel substrate

1999 ◽  
Vol 14 (3) ◽  
pp. 1148-1152 ◽  
Author(s):  
A. K. Sikder ◽  
T. Sharda ◽  
D. S. Misra ◽  
D. Chandrasekaram ◽  
P. Veluchamy ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Photoelectron Spectroscopy ◽  
Steel Substrate ◽  
Chemical Vapor ◽  
Unit Cell ◽  
Diamond Growth ◽  
X Ray ◽  
Composite Layers ◽  
Spectroscopy Studies ◽  
Steel Substrates

Electrodeposited Ni and Ni-diamond composite layers were used as diffusion barriers for Fe to facilitate the diamond growth on stainless steel substrates. Raman spectroscopy and scanning electron microscopy show the formation of good quality diamond crystallites by chemical vapor deposition. X-ray diffraction results indicate that the expansion of Ni unit cell has taken place due to the formation of the Ni–C solid solution. This observation is also well supported by x-ray photoelectron spectroscopy studies. The lattice constant of the expanded Ni unit cell matches closely with the diamond, and this may be helpful in explaining the epitaxial growth of diamond on single-crystal Ni observed by others.

Effects of Substrates on the Composition and Microstructure of TiO2 Thin Films Prepared by the LPD Method

2007 ◽  
Vol 280-283 ◽  
pp. 795-800 ◽  
Author(s):  
Huogen Yu ◽  
Jia Guo Yu ◽  
Bei Cheng ◽  
C.H. Ao ◽  
S.C. Lee
Keyword(s):  
Thin Films ◽  
Stainless Steel ◽  
Photoelectron Spectroscopy ◽  
Steel Substrate ◽  
Precursor Solution ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Tio2 Thin Films ◽  
X Ray ◽  
Steel Substrates

TiO2 thin films were prepared on soda lime glass, fused quartz and stainless steel substrates by liquid phase deposition (LPD) method from a (NH4)2TiF6 aqueous solution upon the addition of boric acid (H3BO3), and then calcined at 500oC for 2 h. The prepared films were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). It was found that the substrates obviously influenced the element composition and microstructure of TiO2 thin films. Except Ti, O and a small amount of F and N elements, which came from the precursor solution, some Si (or Fe) element in the thin films deposited on soda lime glass and quartz substrates (or on stainless steel substrate) was confirmed. The Si (or Fe) element in the thin films could be attributed to two sources. One was from the SiF6 2- ions (or FeF6 2- ions) formed by a reaction between the treatment solution and soda lime glass or quartz (or stainless steel) substrates. The other was attributed to the diffusion of Si (or Fe) from the surface of substrates into the TiO2 thin films after calcination at 500oC. The Si (or Fe) element in the TiO2 thin films could behave as a dopant and resulted in the formation of composite SiO2/TiO2 (or Fe2O3/TiO2) thin films on the substrates.

scholarly journals CoPi/Co(OH)2 Modified Ta3N5 as New Photocatalyst for Photoelectrochemical Cathodic Protection of 304 Stainless Steel

Materials ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 134 ◽  
Author(s):  
Xuan Xie ◽  
Li Liu ◽  
Emeka E. Oguzie ◽  
Ying Li ◽  
Fuhui Wang
Keyword(s):  
Stainless Steel ◽  
Cathodic Protection ◽  
Photoelectron Spectroscopy ◽  
Light Response ◽  
Open Circuit ◽  
304 Stainless Steel ◽  
Nanorod Arrays ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Photocatalytic Material

In this work, CoPi and Co(OH)2 nanoparticles were deposited on the surface of Ta3N5 nanorod-arrays to yield a novel broad-spectrum response photocatalytic material for 304 stainless steel photocatalytic cathodic protection. The Ta3N5 nanorod-arrays were prepared by vapor-phase hydrothermal (VPH) and nitriding processes and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-Vis spectroscopy, respectively, to obtain morphologies, crystal structures, surface compositions, and light response range. In order to analyze the performance improvement mechanism of CoPi/Co(OH)2 on Ta3N5 nanorod-arrays, the electrochemical behavior of modified and unmodified Ta3N5 was obtained by measuring the open circuit potential and photocurrent in 3.5 wt% NaCl solution. The results revealed that the modified Ta3N5 material better protects 304 stainless steel at protection potentials reaching −0.45 V.

Study on Pitting Corrosion Resistance of Nanocrystallized Bulk 304 Stainless Steel in 0.5mol/L Hydrochloric Acid Solution

2014 ◽  
Vol 487 ◽  
pp. 41-44
Author(s):  
Yan Zhang ◽  
Cun Bo Gong ◽  
Gui Mei Shi ◽  
Sheng Gang Wang
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Photoelectron Spectroscopy ◽  
304 Stainless Steel ◽  
X Ray ◽  
Pitting Corrosion Resistance ◽  
304 Austenitic Stainless Steel ◽  
Potentiostatic Polarization ◽  
Hcl Solution

Potentiodynamic and potentiostatic polarization experiments showed that the nanocrystallized bulk 304 stainless steel (nano304SS) exhibited a superior pitting resistance in 0.5 mol/L HCl solution, in comparison to the bulk 304 austenitic stainless steel (304SS). X-ray photoelectron spectroscopy characterization indicated that a passive film was formed on the nano304SS which was richer in Cr and denser than that on the 304SS

(Ti,Cr)N and Ti/TiN PVD coatings on 304 stainless steel substrates: wear-corrosion behaviour

1999 ◽  
Vol 350 (1-2) ◽  
pp. 161-167 ◽  
Author(s):  
S Rossi ◽  
L Fedrizzi ◽  
M Leoni ◽  
P Scardi ◽  
Y Massiani
Keyword(s):  
Stainless Steel ◽  
Corrosion Behaviour ◽  
304 Stainless Steel ◽  
Pvd Coatings ◽  
Steel Substrates
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