Preparation of Oxidation Resistance Coating of Silicide by Pack Cementation

DOI

10.2991/mebe-15.2015.82How to use a DOI?

Keywords

Pack cementation; Coating; Silicide; Oxidation

Abstract

The application of molybdenum was limited as a candidate material for working at a high temperature because molybdenum has a poor oxidation resistance. MoSi2 is typically selected to solve the problem since it can form a dense SiO2 coating to protect the substrate molybdenum. MoSi2 coating on the surface of the Mo was prepared by pack cementation process in this paper. The silicide coating was formed by controlling the weight ratio of Si/MoSi2 powders and the pack cementation time. The results showed that the Si is mainly involved in the formation of a silicide layer on the surface of Mo. The MoSi2 is little participation in the coating formed. Two silicide layers have formed on the surface of Mo, outer layer of MoSi2 and inner layer of Mo5Si3. With the extension of time, the thickness of the MoSi2 layer and the Mo5Si3 layer increases, but the increasing rate slows down.

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  - Tao Lin
AU  - Huiping Shao
AU  - Wenwen Zhang
PY  - 2015/04
DA  - 2015/04
TI  - Preparation of Oxidation Resistance Coating of Silicide by Pack Cementation
BT  - Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering
PB  - Atlantis Press
SP  - 347
EP  - 350
SN  - 2352-5401
UR  - https://doi.org/10.2991/mebe-15.2015.82
DO  - 10.2991/mebe-15.2015.82
ID  - Lin2015/04
ER  -