Internal Oxidation of Ni(Al) Solid Solution Zone Prepared by Pack Cementation of Pure Ni

Abstract:

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Pure Ni was aluminized with an Ni3Al, NaCl and Al2O3 pack powder mixture at 1100°C for 12 h. The Ni(Al) solid solution formed in aluminized Ni was internally oxidized at 1000°C for 2 to 12 h with a Co/CoO buffer. The internal oxidation zone consisted of 2 regions: granular precipitate zone near the surface and rod-like zone near the oxidation front. The growth of internal oxidation zone deviated from the parabolic law due to the non-constant Al profile developed by the aluminizing process. The granular zone grows linearly from the surface of the alloy.

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Periodical:

Edited by:

Toshio Maruyama, Masayuki Yoshiba, Kazuya Kurokawa, Yuuzou Kawahara and Nobuo Otsuka

Pages:

384-388

DOI:

10.4028/www.scientific.net/MSF.696.384

Citation:

D. T. M. Do and M. Nanko, "Internal Oxidation of Ni(Al) Solid Solution Zone Prepared by Pack Cementation of Pure Ni", Materials Science Forum, Vol. 696, pp. 384-388, 2011

Online since:

September 2011

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$35.00

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