Effect of Nitrogen Electrolytes on Al2021 Alloy by Electrolytic Plasma Processing

Abstract:

AlON-Al₂O₃ coatings were prepared on Al2021 alloy by the electrolytic plasma processing (EPP) method. NaNO₂, NaNO₃ and NH₄NO₃ were chosen as nitrogen supply agents. The nitrogen inducing effect was studied by a combined composition and structure analysis of the coating layer carried out by X-ray diffractometer (XRD), scanning electron microscopy (SEM) for the specimens EPP-treated at room temperature for 15 min under a hybrid voltage of 260V DC plus 200V AC (50Hz) power. Microhardness tests and wear tests were carried out to correlate the evolution of microstructure and resulting mechanical properties.

• Periodical: Applied Mechanics and Materials (Volume 378)
• Pages: 213-219
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.378.213
• Online since: August 2013
• Authors: Byunh Hyun Ahn, Dong Gun Lee, Je Hyun Lee, Uk Rae Cho, Bon Heun Koo
• Keywords: Al₂O₃-AlON Coating, Aluminium Alloy, Nitrogen Inducing Agent

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