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Effect of Heat Treatment on Mechanical Properties and Corrosion Performance of Cold-Sprayed Tantalum Coatings
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India.
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad,India.
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India.
University West, Department of Engineering Science, Research Enviroment Production Technology West. International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India. (PTW)ORCID iD: 0000-0001-5521-6894
2016 (English)In: Journal of thermal spray technology (Print), ISSN 1059-9630, E-ISSN 1544-1016, Vol. 25, no 4, 745-756 p.Article in journal (Refereed) Published
Abstract [en]

The cold-spray technique is of significant interest to deposit refractory metals with relatively high melting point for a variety of demanding applications. In the present study, mechanical properties of cold-sprayed tantalum coatings heat treated at different temperatures were investigated using microtensile testing, scratch testing, and nanoindentation. The corrosion performance of heat-treated coatings was also evaluated in 1 M KOH solution, and potentiodynamic polarization as well as impedance spectroscopy studies were carried out. Assessment of structure–property correlations was attempted based on microstructure, porosity, and intersplat bonding state, together with mechanical and corrosion properties of the heat-treated cold-sprayed tantalum coatings. Coatings annealed at 1500 °C, which is very close to the recrystallization temperature of tantalum, were found to perform almost as bulk tantalum, with exciting implications for various applications.

Place, publisher, year, edition, pages
Springer, 2016. Vol. 25, no 4, 745-756 p.
Keyword [en]
Cold spray, corrosion protection, electrochemical characterization, heat treatment, nanoindentation, scratch or impact loading testing, tantalum
National Category
Production Engineering, Human Work Science and Ergonomics Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-10164DOI: 10.1007/s11666-016-0388-6OAI: oai:DiVA.org:hv-10164DiVA: diva2:1049041
Note

This article is an invited paper selected from presentations at the 6th Asian Thermal Spray Conference (ATSC 2014) and has been expanded from the original presentation. ATSC 2014 was held in Hyderabad, India, November 24-26, 2014, and was organized by the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) and the Asian Thermal Spray Society.

Available from: 2016-11-23 Created: 2016-11-23 Last updated: 2016-11-23Bibliographically approved

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