Analytical Characterization and Corrosion Behavior of Non-Functional Bis-Silane Pre-Treated Carbon Steel Substrates

2009 ◽  
Vol 79-82 ◽  
pp. 1091-1094
Author(s):  
Hai Ying Zhu ◽  
Yan Chen ◽  
Yun Ping Liu ◽  
Wei Wei Sun ◽  
Shou Gang Chen
Keyword(s):  
Carbon Steel ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Good Adhesion ◽  
Adhesion Properties ◽  
Analytical Characterization ◽  
Treated Carbon ◽  
Steel Substrates ◽  
Scanning Electron

The present work aims at studying the corrosion resistance of carbon steel substrates pre-treated with bis-[triethoxysilylpropyl] tetrasulfide (BTESPT) solutions. The corrosion behavior of the pre-treated substrates during immersion in seawater was assessed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The analytical characterization of the silane films was performed by scanning electron microscopy (SEM). The results show that the pre-treatments based on silanes provide good corrosion protection of carbon steel substrates and the bis-silane film has good adhesion properties.

scholarly journals Optical characterization of Zn coatings deposited on low carbon steel substrates

2012 ◽  
Vol 356 ◽  
pp. 012017
Author(s):  
G Bodurov ◽  
N Boshkov ◽  
L Lutov ◽  
T Ivanova ◽  
K A Gesheva
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Optical Characterization ◽  
Low Carbon ◽  
Steel Substrates

Influence of phytic acid on the corrosion behavior of carbon steel with different surface treatments

2018 ◽  
Vol 65 (6) ◽  
pp. 658-667 ◽  
Author(s):  
Yingjun Zhang ◽  
Baojie Dou ◽  
Yawei Shao ◽  
Xue-Jun Cui ◽  
Yanqiu Wang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Corrosion Inhibition ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Surface Condition ◽  
Energy Dispersive Spectrometer ◽  
Surface Treatments ◽  
Inhibition Mechanism ◽  
Content Type

Purpose This paper aim to investigate the influence of PA on the corrosion behavior of carbon steel with blast cleaned or pre-rusted treatments, and interpret the inhibition mechanism of PA on the steel with different surface treatments. Design/methodology/approach The influence of PA on the corrosion behavior of blast cleaned or rusty steel was investigated by means of electrochemical impedance spectroscopy (EIS). The EIS data were analyzed using the @ZsimpWin commercial software. The morphology and component of steel after immersion were characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), Fourier transformation infrared (FTIR) and X-ray diffractometer (XRD). Findings EIS analysis results indicated that PA had good corrosion inhibition for blast cleaned or rusty steel. SEM, EDS, FTIR and XRD further indicated that PA had two main corrosion inhibition processes for the corrosion inhibition of blast cleaned or rusty steel: corrosion dissolution and formation of protective barrier layers. Originality/value Most published works focus the attention only toward the effect of corrosion inhibitor for the clean metal surfaces. However, the surface condition of metal sometimes is unsatisfactory in the practical application of corrosion inhibitor, such as existing residual rust. Some studies also have shown that several corrosion inhibitors could be applied on partially rusted substrates. These inhibitors mainly include tannins and phosphoric acid, but not PA. Therefore, the authors investigated the influence of PA on the corrosion behavior of carbon steel with blast cleaned or pre-rusted treatments in this paper.

Study of Corrosion Behavior of Friction Surfacing AA6351 Aluminium Alloy Coating on AISI 1020 Low Carbon Steel

2020 ◽  
Vol 1012 ◽  
pp. 401-406
Author(s):  
Carlos Trivellato de Carvalho Filho ◽  
Pedro Paiva Brito
Keyword(s):  
Surface Roughness ◽  
Corrosion Resistance ◽  
Carbon Steel ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Low Carbon Steel ◽  
Alloy Coating ◽  
Low Carbon ◽  
Friction Surfacing ◽  
Finishing Process

In the present work, the friction surfacing process was applied to manufacture aluminum alloy (AA6351) coatings on low carbon steel (AISI 1020) substrates. After friction surfacing the AA6351 deposited coatings were submitted to two finishing process in order to adjust surface roughness: milling and milling followed by sanding. The corrosion behavior of the two finishing process was compared with the as-deposited condition in order to determine the influence of surface roughness on the corrosion resistance of friction surfacing coatings. The corrosion behavior was examined by electrochemical impedance spectroscopy and potentiodynamic polarization in a 3.5wt.%NaCl solution containing naturally dissolved O2. The results obtained indicated that the elevated surface roughness observed in the as-deposited condition led to relatively lower corrosion resistance in comparison, with lower values for polarization resistance and more anodic corrosion potential.

Study on Corrosion Behavior of Al-Zn-In and Al-Zn-Ga Alloys in NaCl Solution

2011 ◽  
Vol 284-286 ◽  
pp. 1701-1704
Author(s):  
Jing Ling Ma ◽  
Jiu Ba Wen ◽  
Gao Lin Li
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electrochemical Impedance Spectroscopy ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
X Ray ◽  
Inductive Loop ◽  
Capacitive Loop ◽  
Scanning Electron

The corrosion behavior of Al-5Zn-0.03In and Al-5Zn-0.03Ga alloys in 3.5 % NaCl solution has been examined by electrochemical methods, scanning electron microscopy, X-ray microanalysis, electrochemical impedance spectroscopy. The results demonstrate that the alloys differ in the microstructure, corroded morphology and electrochemical properties. For Al-5Zn-0.03In alloy, the precipitates enriched in Al and Zn initiates pitting. For Al-5Zn-0.03Ga alloy, corrosion occurs more uniformly, the corrosion of the alloy occurred via the formation of a surface Ga-Al amalgam alloy. The EIS of Al-5Zn-0.03In alloy contains a capacitive loop and an inductive loop; the inductive loop can be attributed to the presence of the pitting. The EIS of Al-5Zn-0.03Ga alloy contains only a capacitive loop.

The Effect of Temperature and Time on the Formation of a Reaction Interlayer During Aluminizing of a Carbon Steel

2009 ◽  
Vol 1242 ◽  
Author(s):  
R. Torres ◽  
V.H. López ◽  
J.P. Arredondo ◽  
R. García ◽  
J.A. Verduzco ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Kinetic Study ◽  
Microstructural Characterization ◽  
Tube Furnace ◽  
Effect Of Temperature ◽  
Second Phase ◽  
Growth Profiles ◽  
Isothermal Growth ◽  
Steel Substrates

ABSTRACTA kinetic study was performed on the growth of a reaction interlayer between molten Al and carbon steel substrates at temperatures between 665 to 820°C by holding Al/flux/steel assemblies, in a tube furnace, at temperature for times up to 120 min. An Ar atmosphere and a K-Al-F based flux were used to enable spreading of molten Al on the steel substrates. Chemical and microstructural characterization of the samples revealed that the interlayer is composed of FeAl3 and Fe2Al5, being the second phase significantly thicker. The Fe2Al5 phase grows toward the steel with a tongue like morphology. Isothermal growth profiles of the reaction interlayer followed a parabolic behavior, meaning that at the beginning the reaction is very rapid and once that a continuous interlayer is formed the growth of the interlayer is controlled by interdifussion of species across the interlayer.

scholarly journals Scanning Electron Microscopy Characterization of Carbon Steel Fractured by Pressure while Exposed to Cryogenic Temperatures

2010 ◽  
Vol 16 (S2) ◽  
pp. 1260-1261 ◽  
Author(s):  
MW Pendleton ◽  
C Mazzella
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Carbon Steel ◽  
Cryogenic Temperatures ◽  
Microscopy Characterization ◽  
Scanning Electron Microscopy Characterization ◽  
Scanning Electron

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Microscopic Characterization of Cosintered Copper/Cordierite Interfaces

1989 ◽  
Vol 153 ◽  
Author(s):  
J. Werckmann ◽  
B.S. Han ◽  
J. Faerber ◽  
P. Humbert ◽  
B. Carriere ◽  
...  
Keyword(s):  
Sol Gel ◽  
Copper Compound ◽  
Heating Rates ◽  
Good Adhesion ◽  
Adhesion Properties ◽  
Microscopic Scale ◽  
Structural Modifications ◽  
High Heating ◽  
Bonding Technique

AbstractCopper and sol-gel processed cordierite were cosintered in oxidizing atmosphere using an eutectic bonding technique. Firing at low and high heating rates leads to interfaces which present different macroscopic properties. These interfaces were therefore investigated on a microscopic scale by SEM, XPS and STEM analyses. Copper diffusion as well as strong chemical and structural modifications were observed in the interface region. Although these interfaces have good adhesion properties, there was no evidence for the formation of some interfacial copper compound.

Corrosion Analysis of AZ61 Alloy with Different Level of Ca Addition and Aging

2014 ◽  
Vol 592-594 ◽  
pp. 821-825
Author(s):  
S. Manivannan ◽  
M.P. Sathishkumar ◽  
S.P. Kumaresh Babu ◽  
Srinivasan Sundarrajan
Keyword(s):  
Electron Microscopy ◽  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Microstructural Change ◽  
Nacl Solution ◽  
Ca Addition ◽  
Polarization Technique ◽  
Potentiostatic Polarization ◽  
Scanning Electron

The corrosion behavior of AZ61 alloyed with 0.5, 1.0, 1.5 and 2.0% Ca were studied by potentiostatic polarization technique in 3.5wt. % NaCl solution and the further effect of corrosion behavior have been studied after aging at different temperature in a controlled environment.The results show that the calcium addition enhances the corrosion resistance.Simultaneously when the alloy is aged at 180°C, the corrosion resistance has improved. This study also reveals the interesting microstructural change that isresponsible for the improved corrosion resistance. Themicrostructural characterization of this alloy was studied using Optical and Scanning Electron Microscopy (SEM).

scholarly journals Characterization of the Microstructure and Bonding Properties of Zirconium-Carbon Steel Clad Materials by Explosive Welding

Scanning ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Hui Zhao
Keyword(s):  
Electron Microscopy ◽  
Carbon Steel ◽  
Explosive Welding ◽  
Test Results ◽  
Bonding Quality ◽  
Interface Wave ◽  
Bonding Properties ◽  
Processing Requirement ◽  
Scanning Electron

An investigation was carried out to characterize the microstructure and bonding properties of the zirconium-carbon steel explosive clad. The microstructure and the composition of the clad were characterized using optical microscopy and scanning electron microscopy. Bonding properties were inspected by using bending and shearing tests. The examination results indicate that the R60702 and Cr70 plates were joined successfully without visible defects. The interface wave is symmetrical. There is no element diffusion across the interface of the clad plate. There are melt blocks at the interface. Bending and shearing test results indicate that the bonding properties of the clad meet the requirements of the ASTM B898 specification. And after shell rolling, no delamination appeared at the interface. Thus, it indicates that the clad plates have good bonding quality and meet the processing requirement.

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