Lotus-Type Porous Nickel-Free Stainless Steel with High Temperature Nitriding

Abstract:

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Lotus-type porous Fe-25wt.%Cr and Fe-23wt.%Cr-2wt.%Mo alloys were fabricated by continuous zone melting technique in pressurized hydrogen gas. After applying a high temperature nitriding treatment, the fabricated Lotus-type porous nickel-free stainless steel absorbed larger amount of nitrogen compared with non-porous alloy of the same composition since the surface area exposed to the gas is larger in the porous samples. In the Lotus-type porous Fe-25wt.%Cr and Fe-23wt.%Cr-2wt.%Mo alloys the nitrogen concentration after the nitriding achieved was approximately 1.2 wt.%. Only austenite peaks were detected in the profile of both Fe-Cr-N alloys after the nitriding treatment. Neither CrN nor Cr2N were identified by XRD in any specimen after the nitriding.

Info:

Periodical:

Advanced Materials Research (Volumes 15-17)

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran

Pages:

756-761

DOI:

10.4028/www.scientific.net/AMR.15-17.756

Citation:

K. Alvarez et al., "Lotus-Type Porous Nickel-Free Stainless Steel with High Temperature Nitriding", Advanced Materials Research, Vols. 15-17, pp. 756-761, 2007

Online since:

February 2006

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Price:

$35.00

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