Performance and corrosion resistance mechanism of SA-Al composite hydrophobic coating on electrolytic manganese surface

High velocity arc spraying was used to prepare FeCrAl/Al composite coating on Q235 steel substrate by simultaneously spraying FeCrAl wire as the anode and Al wire as the cathode. The composite coating was sprayed with varying voltage and current to obtain optimum coating characteristics. FeCrAl coating was also prepared for comparison purposes. The surface microstructure of the coatings was characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The average microhardness of the coatings and the substrate was analyzed and compared. Corrosion resistance was investigated by means of electrochemical tests. The image results showed that a lamellar structure consisted of interwoven layers of FeCrAl and Al. Al and FeCr constituted the main phases with traces of oxides and AlFe intermetallic compounds. The average porosity was reduced and microhardness of the coatings was improved with increasing voltage and current. The FeCrAl/Al coating formed alternating layers of hard and ductile phases; the corrosion resistance of the coatings in the sodium chloride (NaCl) solution depended on the increase in Al content and spray parameters. The corrosion resistance tests indicated that FeCrAl/Al coating had a better corrosion resistance than the FeCrAl coating. FeCrAl/Al can be used to coat steel substrates and increase their corrosion resistance.

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Effect of Current Density on Morphology and Corrosion Resistance of Anodized Coating on SiCp/2024 Al Composite

Materials Science Forum - Progress in Light Metals, Aerospace Materials and Superconductors ◽

10.4028/0-87849-432-4.661 ◽

2007 ◽

pp. 661-666

Author(s):

Chun Lin He ◽

Qing Kui Cai

Keyword(s):

Corrosion Resistance ◽

Current Density ◽

Al Composite

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Corrosion resistance mechanism of chromate conversion coated aluminium current collector in lithium-ion batteries

Corrosion Science ◽

10.1016/j.corsci.2019.108100 ◽

2019 ◽

Vol 158 ◽

pp. 108100

Author(s):

Nan Piao ◽

Li Wang ◽

Tauseef Anwar ◽

Xuning Feng ◽

Si’e Sheng ◽

...

Keyword(s):

Corrosion Resistance ◽

Lithium Ion Batteries ◽

Resistance Mechanism ◽

Lithium Ion ◽

Current Collector

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Effect on Corrosion Resistance of Ce-Rich-Sealed Ni-P Coatings on Cf/Al Composite Surface

Journal of Materials Engineering and Performance ◽

10.1007/s11665-012-0297-x ◽

2012 ◽

Vol 22 (2) ◽

pp. 624-631 ◽

Cited By ~ 2

Author(s):

Chunyu Wang ◽

Huanran Li ◽

Peng Zhang ◽

Hongyun Zhao

Keyword(s):

Corrosion Resistance ◽

Composite Surface ◽

Al Composite

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The Corrosion Resistance Mechanism of Fe-Based Amorphous Coatings Synthesised by Detonation Gun Spraying

Journal of Materials Engineering and Performance ◽

10.1007/s11665-020-04876-w ◽

2020 ◽

Vol 29 (6) ◽

pp. 3921-3929 ◽

Cited By ~ 2

Author(s):

Weichao Ning ◽

Haimin Zhai ◽

Rongzhen Xiao ◽

Dongqing He ◽

Gang Liang ◽

...

Keyword(s):

Corrosion Resistance ◽

Resistance Mechanism ◽

Detonation Gun Spraying ◽

Detonation Gun ◽

Amorphous Coatings

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Microstructure and Corrosion Resistance of AZ80/Al Composite Plate Fabricated by Friction Stir Processing

Materials Science Forum ◽

10.4028/www.scientific.net/msf.747-748.313 ◽

2013 ◽

Vol 747-748 ◽

pp. 313-319 ◽

Cited By ~ 2

Author(s):

Fen Cheng Liu ◽

Qiang Liu ◽

Chun Ping Huang ◽

Kun Yang ◽

Cheng Gang Yang ◽

...

Keyword(s):

Corrosion Resistance ◽

Magnesium Alloy ◽

Friction Stir Processing ◽

Composite Plate ◽

Composite Layer ◽

Electrochemical Corrosion ◽

Friction Stir ◽

Alloy Substrate ◽

Corrosion Medium ◽

Al Composite

AZ80/Al composite plate was fabricated by means of friction stir processing (FSP) aimed at the improvement of corrosion resistance of magnesium alloy. The cross-section microstructure, surface morphology and corrosion resistance of the Al composite layer were investigated. The experiment results indicated that a dense composite Al layer with superfine and uniform grains was formed, and a few amount of intermetallic compounds existed in the area of Mg/Al interface. The bonding strength of AZ80 magnesium alloy substrate and 1060 pure Al layer was proved to be high which was resulted from the metallurgical bonding of FSP. Microhardness measurement showed the continuous changing of microhardness values from the outmost surface of composite Al layer to the magnesium alloy substrate. Results of electrochemical corrosion test of the composite plate in 5 wt.% NaCl solution showed the better protection effect of the composite Al layer on the magnesium alloy in a corrosion medium. Almost the same corrosion level on the whole corrosion surface was observed which indicated the highly uniform microstructure of the composite layer. It was also proved that the plain arches on the outmost surface of the composite Al layer had no influence on the corrosion resistance of composite Al layer.

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