Investigations of Corrosion Behavior on Combined Fast Laser Texturing and HVOF TiO₂ Powder Deposition Surface Engineering Treatment

Abstract:

The paper presents the characteristics of TiO₂ coatings realized by HVOF spraying process by two different processing paths, i.e. using the classical method of preparing the substrate by sandblasting and by applying a fast laser texturing of the substrate (instead of sandblasting) before the actual HVOF spraying respectively (a duplex treatment). The obtained coatings’ morphology were characterized by SEM before and after electrochemical measurements in NaCl solution. The textured sample presented better resistance to corrosion compared with classical processing path. Keywords: coatings, fast laser texturing, HVOF spraying, duplex surface treatment, anticorrosive.

• Periodical: Advanced Materials Research (Volume 1153)
• Pages: 119-125
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1153.119
• Online since: May 2019
• Authors: Aurel Valentin Bîrdeanu, Dubravka S. Milovanovic, Jovan Ciganovic, Sanja Petronić, Mirela Vaida, Mihaela Bîrdeanu*
• Keywords: Anticorrosive, Coatings, Duplex Surface Treatment, Fast Laser Texturing, HVOF Spraying

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