scholarly journals Corrosion Resistance of Epoxy Coatings Modified by Bis-Silane Prepolymer on Aluminum Alloy

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 842
Author(s):  
Diping Zeng ◽  
Zhiyi Liu ◽  
Lihua Zou ◽  
Haijiang Wu
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Cross Linking ◽  
Self Healing ◽  
Double Layer Capacitance ◽  
Epoxy Coatings ◽  
Long Time ◽  
Modify Epoxy ◽  
Silane Monomer ◽  
Modified Epoxy

In this communication, a bis-silane prepolymer was used to modify epoxy resin, aiming to enhance the corrosion resistance of epoxy coatings on aluminum alloy substrates. The bis-silane prepolymer was prepared by tetraethoxysilane (TEOS) and γ-glycidoxypropyl trimethoxysilane (GPTMS). The corrosion behavior of silane-epoxy coatings was studied. Compared with silane monomer-modified epoxy coatings, bis-silane-modified epoxy coatings have lower coating capacitance (Cc), higher charge transfer resistances (Rdl), and lower double layer capacitance (Cdl) during long-time immersion. It indicates that bis-silane-modified epoxy coating has stronger waterproof permeability and substrate corrosion protection ability. In addition, due to the leaching of the silane component and cross-linking reaction between different silanes during the immersion process, the bis-silane-modified epoxy coatings exhibit much stronger “self-healing” ability.

Self-healing performance and corrosion resistance of novel CeO2-sealed MAO film on aluminum alloy

2021 ◽  
Vol 417 ◽  
pp. 127208
Author(s):  
Yue Gong ◽  
Jiwei Geng ◽  
Jie Huang ◽  
Zhe Chen ◽  
Mingliang Wang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Self Healing

Comparison of Corrosion Behavior of an Epoxy Coating and a RGO Modified Epoxy Coating on N80 Tubing Steel in 10.0 wt% NaCl Solution at Different Temperatures

2021 ◽  
Vol 1035 ◽  
pp. 554-561
Author(s):  
Li Juan Zhu ◽  
Chun Feng ◽  
Ya Chong Song ◽  
Ya Qiong Cao ◽  
Li Hong Han ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Coefficient Of Thermal Expansion ◽  
Composite Coatings ◽  
Epoxy Coating ◽  
Nacl Solution ◽  
Epoxy Coatings ◽  
Different Temperatures ◽  
Influence Of Temperature On ◽  
Modified Epoxy

Epoxy coatings and Reduced Graphene Oxide (RGO) modified epoxy coatings were prepared on N80 tubing steel. The influence of temperature on the corrosion resistance of RGO modified epoxy coatings was studied. And the corrosion behavior of epoxy coatings and RGO modified epoxy coatings in 10.0 wt% NaCl solution at different temperatures was compared. The results showed that the corrosion resistance of both coatings decreased with the increase of temperature. However, the corrosion resistance of RGO modified epoxy coating was two to three orders of magnitude higher than that of epoxy coating at different test temperature. The addition of RGO nanosheets greatly enhanced the corrosion resistance of epoxy composite coatings in 10.0 wt% NaCl solution at high temperature due to their high impermeability and negative coefficient of thermal expansion.

Silane modified epoxy coatings with low surface tension to achieve self-healing of wide damages

2019 ◽  
Vol 133 ◽  
pp. 357-367 ◽  
Author(s):  
Yuting Zou ◽  
Lingyu Li ◽  
Bin Tan ◽  
Yue Ma ◽  
Liang Fang ◽  
...  
Keyword(s):  
Surface Tension ◽  
Self Healing ◽  
Epoxy Coatings ◽  
Modified Epoxy

scholarly journals Vanadium and Tannic Acid-Based Composite Conversion Coating for 6063 Aluminum Alloy

2021 ◽  
Vol 8 ◽  
Author(s):  
Wen Zhu ◽  
Furui Chen ◽  
Youbin Luo ◽  
Zhijun Su ◽  
Wenfang Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Tannic Acid ◽  
Photoelectron Spectroscopy ◽  
Treatment Time ◽  
Electrochemical Impedance ◽  
Conversion Coating ◽  
Self Healing ◽  
Electrochemical Impedance Spectra ◽  
6063 Aluminum Alloy

In this study, a vanadium (V) and tannic acid-based composite conversion coating (VTACC) was prepared on 6063 aluminum alloy (AA6063) to increase its corrosion resistance. The surface morphology and compositions of the VTACCs were characterized using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and X-ray photoelectron spectroscopy (XPS). The corrosion resistance of the coatings was investigated by linear polarization and electrochemical impedance spectra (EIS). The self-healing ability of the coating was detected by SEM, EDS, and scanning vibrating electrode technique (SVET) measurements. The coating mainly consisted of metal oxides, including Al2O3, VO2, V2O3, and V2O5, and metal organic complexes (Al and V-complexes). The electrochemical measurement results indicated that the best corrosion resistance of VTACC was acquired when the treatment time was 12 min. Furthermore, because a new coating with vanadium rich oxide was developed on the scratch area, artificial scratch VTACC surfaces were repaired after several days of immersion in 3.5-wt% NaCl solution.

Corrosion Resistance of Bis-Silane-Modified Epoxy Coatings on an Al-Zn-Mg-Cu Alloy

2020 ◽  
Vol 29 (8) ◽  
pp. 5282-5290 ◽  
Author(s):  
Diping Zeng ◽  
Zhiyi Liu ◽  
Song Bai ◽  
Juangang Zhao ◽  
Jian Wang
Keyword(s):  
Corrosion Resistance ◽  
Epoxy Coatings ◽  
Cu Alloy ◽  
Modified Epoxy

Corrosion resistance of tannic acid, d-limonene and nano-ZrO2 modified epoxy coatings in acid corrosion environments

2021 ◽  
Vol 65 ◽  
pp. 137-150
Author(s):  
Junwei Chang ◽  
Zhenyu Wang ◽  
En-hou Han ◽  
Xinlei Liang ◽  
Gang Wang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Tannic Acid ◽  
Acid Corrosion ◽  
Epoxy Coatings ◽  
Modified Epoxy

scholarly journals Influence of fluorinated graphene-modified epoxy coatings on the corrosion behaviour of 2024 aluminium alloy

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17558-17573
Author(s):  
Shixiong Zhao ◽  
Baojie Dou ◽  
Song Duan ◽  
Xiuzhou Lin ◽  
Yingjun Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminium Alloy ◽  
Epoxy Resin ◽  
Epoxy Matrix ◽  
Corrosion Behaviour ◽  
Epoxy Coatings ◽  
Fluorinated Graphene ◽  
Modified Epoxy

This study provides an enhanced corrosion resistance of epoxy resin (EP) by embedding fluorinated graphene (FG) into the epoxy matrix.

ALCAN B33S

Alloy Digest ◽  
1967 ◽  
Vol 16 (12) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
Aluminum Company

Abstract Alcan B33S is an aluminum alloy recommended for architectural shapes requiring hard, corrosion resistant, colored finishes. It contains enough magnesium to render it heat treatable. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Al-170. Producer or source: Aluminum Company of Canada Ltd.

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