Oxidation Time Influence on the Structure of the Cobalt Base Clad Layer and Scale Morphology

Article Preview

Abstract:

The influence of oxidation time on the microstructure and mechanical property, especially on the hardness, and of Co-base alloy coatings were investigated. Coatings were manufactured by PTA cladding. The cobalt alloy was exposed to temperature 800°C in air for 1, 22 and 200 hours. As a result of oxidation treatment the scale layers were formed and changes in microstructure was observed. Also changes in hardness were noticed.

You might also be interested in these eBooks

Info:

Periodical:

Solid State Phenomena (Volume 183)

Pages:

169-174

Citation:

Online since:

December 2011

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] P. Kofstad, High Temperature Corrosion. Elsevier applied science; London (1988).

Google Scholar

[2] G.E. Wasielewski, R.A. Rapp, High-temperature oxidation. In: Sims CT, Hagel WC, Eds. The Superalloys. John Wiley & Sons: New York 1972; pp.287-316.

Google Scholar

[3] E.F. Bradley, Ed. Superalloys: a technical guide. ASM International; Metals Park (1988).

Google Scholar

[4] P. Berthod; Thermogravimetric Study of Oxide Spallation for Chromium-Rich Cast Cobalt-Based and Iron-Based Alloys Oxidized at High Temperature; The Open Corrosion Journal, 2009, 2, 61-70.

DOI: 10.2174/1876503300902010061

Google Scholar

[5] F. Tholence, M. Norell, High Temperature Corrosion of Cast Alloys in Exhaust Environments I-Ductile Cast Irons; Oxid Met (2008) 69: 13–36.

DOI: 10.1007/s11085-007-9081-y

Google Scholar

[6] A.S.C.M. D'Oliveira, R.S.C. Paredes, R.L.C. Santos, Pulsed current plasma transferred arc hardfacing, Journal of Materials Processing Technology 171 (2006) 167–174.

DOI: 10.1016/j.jmatprotec.2005.02.269

Google Scholar

[7] A.S. C d`Oliveira., R Vilar, C.G. Feder, High temperature behaviour of plasma transferred arc and laser Co-based alloy coatings, Applied Surface Science 201(2002) 154-160.

DOI: 10.1016/s0169-4332(02)00621-9

Google Scholar

[8] Jong-Choul Shin, Jung-Man Doh, Jin-Kook Yoon, Dok-Yol Lee, Jae-Soo Kim; Effect of molybdenum on the microstructure and wear resistance of cobalt-base Stellite hardfacing alloys; Surface and Coatings Technology 166 (2003) 117–126.

DOI: 10.1016/s0257-8972(02)00853-8

Google Scholar

[9] P. Berthod, L. Aranda, C. Heil, Effect of a Preliminary Aging Treatment on the Oxidation Kinetic at High Temperature for a Cobalt–Based Alloy Strengthened by Tantalum Carbides; The Open Corrosion Journal, 2009, 2, 150-156.

DOI: 10.2174/1876503300902010150

Google Scholar

[10] L. Bourithis, V. Gontzes , G.D. Papadimitriou, Failure analysis of stellite dies for brass extrusion: The effect of aging; Journal of Materials Processing Technology 182 (2007) 608–614.

DOI: 10.1016/j.jmatprotec.2006.09.018

Google Scholar

[11] S. Osgerby, Oxide scale damage and spallation in P92 martensitic steel; Materials at High Temperatures, Volume 17, Number 2, May 2000 , 307-310.

DOI: 10.1179/mht.2000.17.2.019

Google Scholar