Cyclic oxidation resistance of hot-dipping Al-5Si coating on 0Cr18Ni10Ti

DOI

10.2991/icimm-15.2015.281How to use a DOI?

Keywords

cyclic oxidation resistance; hot-dipping Al-Si; high temperature oxidation; 0Cr18Ni10Ti

Abstract

0Cr18Ni10Ti austenitic stainless steels were coated by hot-dipping in molten Al bath and molten Al-5 wt. % Si bath. The cyclic oxidation resistance behavior of both hot-dipping Al samples and hot-dipping Al-5Si samples at 900 for 24 cycles have been investigated using muffle furnace. The element distribution, phase composition and morphology of the aluminide layer and the oxide film were characterized by SEM and EDS. The results show the coating layers on both hot-dipping Al samples and hot-dipping Al-5Si samples after 24 cycles at 900 consisted of four layers, in the sequence of Al2O3 film, outer layer with black phase and grey phase, intermediate MAl layer, Al solution layer from the external topcoat to substrate. The thickness of intermediate MAl layer of hot-dipping Al-5Si samples was lower than the thickness of MAl layer of hot-dipping Al samples. Some cracks were found on intermediate MAl layer of hot-dipping Al samples after 24 cycles at 900 .The cyclic oxidation resistance of Al-5Si samples is better than Al-5Si samples at 900 for 24h.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bi-lin Shao
AU  - Jin Lou
AU  - Cheng-xiang Ruan
AU  - Zuo Yi
PY  - 2015/07
DA  - 2015/07
TI  - Cyclic oxidation resistance of hot-dipping Al-5Si coating on 0Cr18Ni10Ti
BT  - Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 1536
EP  - 1540
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-15.2015.281
DO  - 10.2991/icimm-15.2015.281
ID  - Shao2015/07
ER  -