Elevated temperature tribology of Ni alloys under helium environment for nuclear reactor applications Academic Article

abstract

• 2018 Elsevier Ltd The current study investigates the friction and wear behavior of two primary candidate materials, Inconel 617 and alloy 800HT for high-temperature gas cooled nuclear reactors/very-high-temperature reactors. Using a custom-built high temperature tribometer, helium cooled reactor environment was simulated at room and 800 C temperatures. Microscopy and chemical analyses were carried out to explain the tribological performance of the alloys. At elevated temperatures, both alloys show higher friction in helium, compared to air environment. Both alloys exhibit high wear resistance in all experimental conditions, except at high temperature helium environment. The formation of glazed and mechanically mixed layers of oxides were found to be important causes for the lower friction and wear in high temperature air atmosphere.

authors

• Polycarpou, Andreas

published proceedings

• TRIBOLOGY INTERNATIONAL

author list (cited authors)

• Rahman, M. S., Ding, J., Beheshti, A., Zhang, X., & Polycarpou, A. A.

citation count

• 47

complete list of authors

• Rahman, Md Saifur||Ding, Jie||Beheshti, Ali||Zhang, Xinghang||Polycarpou, Andreas A

publication date

• July 2018

publisher

• Elsevier  Publisher

published in

• Tribology International  Journal

keywords

• Alloy 800ht
• Elevated Temperature Helium Tribology
• Inconel 617
• Nuclear Reactor

Digital Object Identifier (DOI)

• 10.1016/j.triboint.2018.03.021

start page

• 372

end page

• 384

volume

• 123

URL

• http://dx.doi.org/10.1016/j.triboint.2018.03.021