Pulsed plasma nitriding of high velocity oxy-fuel sprayed Inconel 625 coatings.

Authors :: Mindivan, Harun
Source :: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology (Sage Publications, Ltd.); Oct2022, Vol. 236 Issue 10, p1950-1961, 12p
Publication Year :: 2022
Abstract: A hardening of high velocity oxy-fuel sprayed Inconel 625 coating systems was performed by pulsed plasma nitriding treatment. After deposition of an Inconel 625 coating, samples were pulsed plasma nitrided at 520 °C for 12 h in a gas ratio of 3:1 N<subscript>2</subscript> and H<subscript>2</subscript> under a constant pressure of 2.5 × 10<superscript>2</superscript> Pa. Pulsed plasma nitriding improved the microhardness of the high velocity oxy-fuel sprayed Inconel 625 coating from 355 to 401 HV<subscript>0.05</subscript>. The high velocity oxy-fuel-sprayed Inconel 625 coating after pulsed plasma nitriding process showed excellent corrosion resistance as well as a reduction of both the friction coefficient and wear rate during the sliding phase in a 3.5 wt.% NaCl solution against sliding action of Al<subscript>2</subscript>O<subscript>3</subscript> ball. [ABSTRACT FROM AUTHOR]

Language :: English
ISSN :: 13506501
Volume :: 236
Issue :: 10
Database :: Complementary Index
Journal :: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology (Sage Publications, Ltd.)
Publication Type :: Academic Journal
Accession number :: 158511927
Full Text :: https://doi.org/10.1177/13506501211062522