Pure Al Coatings Prepared by Arc-Added Glow Plasma Depositing Technique and Subsequence Plasma Oxidation

Chen Wang; Teng Fei Chen; Jie Tao

doi:10.4028/www.scientific.net/AMR.721.342

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 721Pure Al Coatings Prepared by Arc-Added Glow Plasma...

Pure Al Coatings Prepared by Arc-Added Glow Plasma Depositing Technique and Subsequence Plasma Oxidation

Abstract:

Al coatings were prepared on 316L stainless steel substrate by arc-added glow plasma depositing technique and then plasma oxidized. The influences of bias voltage and arc source current on both the thickness and surface roughness of Al coatings were investigated respectively. Then, the microstructure and the composition of Al and Al₂O₃ coatings were characterized. Finally, the bonding force and the corrosion resistance of as-prepared alumina coatings were discussed. The results indicated that nanostructured pure Al coatings with surface roughness (Ra) of 267.93 nm were obtained when the bias of the substrate was-300V and the arc current was 70A. The Al₂O₃ coatings oxidized from nanoAl coatings were dense and uniform, with a bonding force of 37.4 N, an excellent corrosion potential of-0.202V and corrosion current of 0.197 μm·cm^-2 in 3.5% NaCl solution.

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Periodical:

Advanced Materials Research (Volume 721)

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342-345

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https://doi.org/10.4028/www.scientific.net/AMR.721.342

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Online since:

July 2013

Authors:

Chen Wang, Teng Fei Chen, Jie Tao

Keywords:

Al₂O₃ Coatings, Arc-Added Glow Plasma Depositing, Bias Voltage, Corrosion Resistance, Nanoal Coatings, Scratch Test

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