An X-ray photo-electron spectroscopic study on the role of molybdenum in increasing the corrosion resistance of ferritic stainless steels in HC1

1979 ◽  
Vol 19 (1) ◽  
pp. 3-14 ◽  
Author(s):  
K. Hashimoto ◽  
K. Asami ◽  
K. Teramoto
Keyword(s):  
Corrosion Resistance ◽  
Spectroscopic Study ◽  
Stainless Steels ◽  
Ferritic Stainless Steels ◽  
X Ray

scholarly journals X-ray Photoelectron Spectroscopic Study on the Anodic Passivity of Sputterdeposited W-Ta Alloys in 12 M HCl

2012 ◽  
Vol 12 ◽  
pp. 139-148
Author(s):  
Jagadeesh Bhattarai
Keyword(s):  
Corrosion Resistance ◽  
Spectroscopic Study ◽  
Passive Films ◽  
Xps Analysis ◽  
X Ray ◽  
Quantitative Surface Analysis ◽  
Potentiostatic Polarization ◽  
Sputter Deposited ◽  
Hcl Solution

The role of a simultaneous additions of tungsten and tantalum on the anodic passivity of the passive films of the sputter-deposited nanocrystalline W-xTa alloys was studied using immersion tests, electrochemical measurements and X-ray photoelectron spectroscopic (XPS) analysis. The formation of spontaneous passive film on the alloys, which is composed of double oxyhydroxide of tungsten and tantalum ions are responsible for their higher corrosion resistance than those of the alloy-constituting elements in 12 M HCl solution open to air at 30°C. The quantitative surface analysis by XPS is clarified that the improved anodic passivity of the alloys than those of alloy-constituting elements is based on the formation of new anodic passive oxyhydroxide films composed of W6+ and Ta5+ ions. These films have higher protectiveness and stability than those of passive oxyhydroxide films of alloy-constituting elements, that is, oxyhydroxides of hexavalent tungsten and pentavalent tantalum after potentiostatic polarization for 1 h in 12 M HCl.DOI: http://dx.doi.org/10.3126/njst.v12i0.6492 Nepal Journal of Science and Technology 12 (2011) 139-148 

J & L TYPE 409/409 HP

Alloy Digest ◽  
1999 ◽  
Vol 48 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Stainless Steels ◽  
Heat Treating ◽  
Automotive Exhaust ◽  
Ferritic Stainless Steels ◽  
Resistance To Oxidation ◽  
Specialty Steel ◽  
Oxidation And Corrosion

Abstract J and L Types 409 HP are ferritic stainless steels with 11% chromium. They exhibit an excellent combination of good formability, economy, and resistance to oxidation and corrosion. It is typically used in automotive exhaust systems. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-743. Producer or source: J & L Specialty Steel Inc.

MAGIVAL MG2

Alloy Digest ◽  
2013 ◽  
Vol 62 (11) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Coercive Force ◽  
Magnetic Permeability ◽  
Stainless Steels ◽  
Heat Treating ◽  
Steel Grade ◽  
High Permeability ◽  
Ferritic Stainless Steels ◽  
Magnetic Applications

Abstract MAGIVAL MG2 is a free machining ferritic stainless steel grade with the same high machinability and corrosion resistance as type 430F, but offering a higher magnetic permeability and lower coercive force than MG1 (Alloy Digest SS-1159, October 2013). Magival is a group of easily workable ferritic stainless steels developed for magnetic applications where high permeability and low coercive force are required. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1161. Producer or source: Valbruna Stainless Steel.

Role of chromium in anomalous behaviour of the passive layer in Ni-Cr-Mo alloys in 1M HCl solution

CORROSION ◽  
10.5006/3767 ◽  
2022 ◽  
Author(s):  
Malvika Karri ◽  
Amit Verma ◽  
J.B. Singh ◽  
Sunil Kumar Bonagani ◽  
U.K. Goutam
Keyword(s):  
Corrosion Resistance ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Underlying Mechanism ◽  
Passive Layer ◽  
X Ray ◽  
Superior Corrosion Resistance ◽  
Hcl Solution ◽  
Cr2o3 Layer

This work seeks to understand the underlying mechanism involved in passivity of Ni-Cr-Mo alloys in a less concentrated HCl solution (1M) by systematically varying contents of Cr and Mo solutes in model Ni-Cr-Mo alloys. Corrosion behaviour was evaluated based on potentiodynamic polarisation tests carried out in conjunction with electrochemical impedance and x-ray photoelectron spectroscopies of passive films that formed on alloys during their exposure to the HCl solution. Results have shown that an increase in Mo alone is not sufficient to improve the corrosion resistance of the alloys at lower concentrations of HCl. Optimum concentrations of Cr and Mo solutes have been found to be in the vicinity of ~17 wt.% Cr and ~19 wt.% Mo for superior corrosion resistance of the alloys. This was attributed to the protection of the Cr2O3 layer as a consequence of the enrichment of Mo6+ ions in the passive film in 1M HCl solution.

The Role of Pd2+/Pd0in Hydrogenation by [Pd(2-pymo)2]n: An X-ray Absorption and IR Spectroscopic Study

2012 ◽  
Vol 18 (49) ◽  
pp. 15831-15837 ◽  
Author(s):  
Sabine Schuster ◽  
Elias Klemm ◽  
Matthias Bauer
Keyword(s):  
Spectroscopic Study ◽  
X Ray ◽  
Ir Spectroscopic ◽  
X Ray Absorption

scholarly journals The Role of MW Plasma Treatment on the Corrosion Resistance of Stainless Steels

2013 ◽  
Vol 58 (4) ◽  
pp. 1169-1175 ◽  
Author(s):  
D. Kasprzyk ◽  
B. Stypuła ◽  
P. Kustrowski ◽  
M. Drozdek
Keyword(s):  
Corrosion Resistance ◽  
Plasma Treatment ◽  
Stainless Steels ◽  
Photoelectron Spectroscopy ◽  
Electron Cyclotron Resonance ◽  
Nitrogen Plasma ◽  
Pitting Corrosion Resistance ◽  
Composition And Structure ◽  
Steel Surfaces

Abstract Two stainless steels (S32404 duplex and S32615 austenitic) were subject to the carbon/nitrogen plasma treatment to examine the role of alloy composition and structure in the behavior of surface during modification. The modification process was performed in the electron cyclotron resonance (ECR) micro wave plasma system, with the frequency of 2.45 GHz and the generator power of 350 W, and with the use of reactive gas mixtures containing CH4 and N2, at the low temperature of 400°C and under pressure of 0.2Tr. The treated surface was analyzed by means of X-ray photoelectron spectroscopy (XPS). The corrosion resistance of the samples was determined on the basis of LSV polarization curves in 3% sodium chloride solution at 37°C. The treated steel surfaces showed a higher tendency for passivation and higher pitting corrosion resistance compared to the non-modified surfaces.

Sign in / Sign up

Export Citation Format

Share Document