Corrosion in NanocoatingsOpen Access

AN INVESTIGATION ON EFFECTS OF TiO₂ NANO-PARTICLES INCORPORATED IN ELECTROLESS NiP COATINGS' PROPERTIES

School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran, Tehran, Iran, P.O. Box: 11155-4563, Tel/Fax: +982161114108, Iran

Associate Professor and Member of Center of Excellence in High Performance Ultra Fine Materials.

Corresponding Author.

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S. Salmi

School of Metallurgy and Materials Engineering, University College of Engineering, University of Tehran, Tehran, Iran

MSc Student in Corrosion and Protection Engineering.

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, and

E. Tohidlou

Eng. Dep., University of Sistan and Baluchestan, Zahedan, Sistan-Baluchestan, Iran

Lecturer of sistan and baluchestan university.

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https://doi.org/10.1142/S2010194512002814Cited by:5 (Source: Crossref)

Abstract

Electroless composite coatings have been vastly used in various industries during last decades due to their good properties, such as corrosion and wear resistance, hardness and uniform thickness. In this paper, co-deposition of TiO₂ nano-particles with Nickel-Phosphorus electroless coatings on API-5L-X65 steel substrates was investigated. Surface morphology and composition of coatings were studied via SEM and EDX, respectively. XRD analyses showed that these coatings had amorphous structure with TiO₂ crystalline particles. TiO₂ nano-particles increased microhardness of coatings. Corrosion resistance of these coatings was tested using linear polarization in 0.5M sulfuric acid electrolyte. Results showed that NiP-TiO₂ electroless composite coatings increased corrosion resistance of substrates.

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