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Thermal properties of the surface-modified Inconel 617  

Cho, Hyun (Department of Nanosystem and Nanoprocess Engineering, Pusan National University)
Bang, Kwang-Hyun (Division of Mechanical and Information Engineering, Korea Maritime University)
Lee, Byeong-Woo (Department of Materials Engineering, Korea Maritime University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.19, no.6, 2009 , pp. 298-304 More about this Journal
Abstract
The effect of the surface treatments on the high temperature properties of the Inconel 617, one of the promising candidate alloys for high temperature heat-transport system, has been studied. Various surface modification methods including a rapid thermal process(RTP), a hydrothermal treatment, and a physical vapor deposition($2{\mu}m$ thick TiAlN film by an arc discharge) were applied to the Inconel 617. The morphological and the structural properties of the surface-modified Inconel 617 samples after heat treatment at $1000^{\circ}C$ in the air were compared to find out whether inhomogeneous formation of $Cr_2O_3$ crust at the surface region was suppressed or not. TiAlN-coated Inconel 617 showed homogeneous microstructure and the lowest wear loss compared to bare, RTP- and hydrothermally-treated Inconel 617 by suppressing the $Cr_2O_3$ crust formation.
Keywords
Inconel 617; Surface modification; TiAlN thin film; Microstructure; Wear resistance;
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