Cement-modified enamel coating for enhanced corrosion resistance of steel reinforcing bars

2013 ◽  
Vol 35 (1) ◽  
pp. 171-180 ◽  
Author(s):  
Fujian Tang ◽  
Genda Chen ◽  
Jeffery S. Volz ◽  
Richard K. Brow ◽  
Michael L. Koenigstein
Keyword(s):  
Corrosion Resistance ◽  
Enamel Coating ◽  
Reinforcing Bars

Corrosion Behavior of Enamel Coated Steel Rebar by EIS

2012 ◽  
Vol 450-451 ◽  
pp. 445-453 ◽  
Author(s):  
Fu Jian Tang ◽  
Gen Da Chen ◽  
Jeffery S. Volz ◽  
Richard K. Brow ◽  
Michael Koenigstein
Keyword(s):  
Corrosion Resistance ◽  
Pore Structure ◽  
Enamel Coating ◽  
Surface Condition ◽  
Corrosion Process ◽  
Coated Steel ◽  
Nacl Solution ◽  
Steel Rebar ◽  
Interconnected Pore ◽  
Interconnected Pore Structure

In this study, the corrosion process of enamel-coated deformed rebar completely immersed in 3.5 wt.% NaCl solution was evaluated over a period of 84 days by EIS testing. Three types of enamel coating were investigated: pure enamel, 50/50 enamel coating, and double enamel. Surface condition of the enamel coatings that were intentionally damaged prior to corrosion tests was visually examined at different immersion times. After 84 days of testing, the damaged coating areas were characterized by SEM, and the corrosion products on and adjacent to the damaged areas were collected and analyzed by XRD. Corrosion initiated at the damaged locations with no undercutting of the coating observed. The 50/50 enamel coating had the least corrosion resistance, due to its interconnected pore structure, and prior damage drastically reduced the corrosion resistance of pure and double enamel coated rebar.

scholarly journals Corrosion Resistance of Pipeline Steel with Damaged Enamel Coating and Cathodic Protection

Coatings ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 185 ◽  
Author(s):  
Liang Fan ◽  
Signo Reis ◽  
Genda Chen ◽  
Michael Koenigstein
Keyword(s):  
Corrosion Resistance ◽  
Cathodic Protection ◽  
Enamel Coating ◽  
Pipeline Steel

scholarly journals Corrosion Resistance of a Sand Particle-Modified Enamel Coating Applied to Smooth Steel Bars

Materials ◽  
2014 ◽  
Vol 7 (9) ◽  
pp. 6632-6645 ◽  
Author(s):  
Fujian Tang ◽  
Genda Chen ◽  
Richard Brow ◽  
Michael Koenigstein
Keyword(s):  
Corrosion Resistance ◽  
Enamel Coating ◽  
Sand Particle ◽  
Steel Bars

A NOVEL METHOD FOR STUDYING THE CORROSION RESISTANCE AND MICROSTRUCTURE OF ENAMEL COATING MODIFIED ON HIGH-STRENGTH STEEL IN 3.5 wt.% NaCl SOLUTION

2019 ◽  
Vol 27 (02) ◽  
pp. 1950098
Author(s):  
YULIN LI ◽  
JUNJIE WANG ◽  
QINGDONG ZHONG
Keyword(s):  
Corrosion Resistance ◽  
High Strength Steel ◽  
Enamel Coating ◽  
Scanning Electrochemical Microscopy ◽  
High Strength ◽  
Nacl Solution ◽  
Analysis Technique ◽  
Different Temperatures ◽  
Potential Test ◽  
Electrochemical Microscopy

A new method was introduced to research the corrosion resistance of enamel coatings which were sintered at different temperatures in this paper. 1 – 4 Scanning electrochemical microscopy (SECM) conjunction with capacitance-potential test and Mott–Schottky analysis technique were used to study the coating failure process and semiconductor conduction behavior of enamel coating in 3.5[Formula: see text]wt.% NaCl solution. The high strength steel (SAPH440) was selected as the metal substrate. The coatings which were sintered at different temperatures on the high strength steel were analyzed and their corrosion behaviors and microstructures were also measured by potentiodynamic polarization curves, Mott–Schottky analysis technique and scanning electrochemical microscopy. 5 – 10 In this paper, five kinds of enamel coatings were prepared on high strength steel. The SECM results show that the Faraday current of the microprobe tip gradually decreases with the soaking time increasing, which indicates that the coatings become failure slowly with the invasion of water and aggressive ions. At the same time, the tip current was homogeneous during the immersion process, which reflected that the surface of the sample remained stable, no obvious bulges appeared. Capacitance–potential test and Mott–Schottky analysis 7 , 8 show that the external ions and water molecules gradually penetrate into the coating; coating showed characteristics of [Formula: see text]-type semiconductor as time increases, the capacitance increases gradually, the space charge layer thickness decreases, slope of Mott–Schottky curve decreased gradually which indicates that the failure of coating in the process of soaking slowly with the charge carrier density increases.

Morphology, Structure and Corrosion Resistance of Nano-Enamel Coating Changed on Ti-6Al-4V Alloy

2017 ◽  
Vol 893 ◽  
pp. 309-312
Author(s):  
Yu Lin Li ◽  
Zhe Rui Huang ◽  
Qing Dong Zhong ◽  
Chen Xiao ◽  
Hui Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Phase Composition ◽  
Mild Steel ◽  
Potentiodynamic Polarization ◽  
Enamel Coating ◽  
Open Circuit Potential ◽  
Sol Gel ◽  
Open Circuit ◽  
X Ray Diffraction ◽  
X Ray

Using a sol-gel method and impregnation technology to produce nanoenamel coating on polished Ti-6Al-4V alloy. The morphology, structure and phase composition of nanoenamel coatings modified on mild steel were identified with X-ray diffraction (XRD), scanning electro microscopy (SEM) and tested by some electrochemical methods, such as open circuit potential and potentiodynamic polarization testing [1]. All of these method can select the samples which perform the best corrosion resisitance.

Reproducibility of the Corrosion Resistance of UNS S32205 and UNS S32304 Stainless Steel Reinforcing Bars

CORROSION ◽  
10.5006/3360 ◽  
2020 ◽  
Vol 76 (1) ◽  
pp. 114-130 ◽  
Author(s):  
I.G. Ogunsanya ◽  
C.M. Hansson
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Product Evaluation ◽  
Dominant Factor ◽  
Highway Bridge ◽  
Design Codes ◽  
Reinforcing Bars ◽  
Corrosion Performance ◽  
Corrosion Resistant ◽  
Steel Grades

One strategy to address the 75-year service life requirement of a number of highway bridge design codes is the use of more corrosion-resistant reinforcement. Over the last few decades, many stainless steel grades have become available for reinforcing concrete. Of these, two duplex alloys, UNS S32205 and UNS S32304, have become the preferred choices for major highway structures in North America. The purpose of the present study was to investigate the consistency, or variability, of the corrosion performance of bars of these grades from different steel manufacturers. Metallography, chemical analysis, corrosion resistance, and corrosion product evaluation were used to evaluate the bars. It was found that micropits exist to varying degree in the as-received conditions of these bars and that was the most dominant factor in determining the corrosion performance of the bars.

Means of increasing corrosion resistance of titanium enamel coating

1981 ◽  
Vol 38 (8) ◽  
pp. 437-438
Author(s):  
V. A. Svetlov ◽  
N. P. Bovkun
Keyword(s):  
Corrosion Resistance ◽  
Enamel Coating ◽  
Titanium Enamel
Sign in / Sign up

Export Citation Format

Share Document