Microstructure and Properties of Ni-based and Fe-based coatings by Thermal Spray

DOI

10.2991/icemie-16.2016.37How to use a DOI?

Keywords

flame spray; ni-based powder; fe-based powder; microscopic structure; microhardness and wear resistance

Abstract

Thermal spray is an effective method in the remanufacture process. In this paper, Ni-based and Fe-based powders were sprayed onto a steel substrate40Cr using a thermal flame spray technology. The coatings were remelted by the heatronicheater. The morphology of the coatings was characterized by using scanning election microscope (SEM), energy dispersive spectrometer (EDS). The hardness and wear resistance of the coatings were investigated. The SEM results show that some of the porosities generated and coatings were comprised by molten and unmelted particles. Some of new phase were found after the remelting process in Ni-based coatings, and EDS analysis revealed that lots of chromium (Cr) element concentrated in the new phrase which maybe some of chromic compound generated during the remelting process. The microhardness results show that the Ni-based coating is harder than that of the Fe-based coating, and tribological result show that the friction coefficient of Ni-based coating is smaller than that of the Fe-based coating which gave an indirect evidence for the precipitated phase, which means the new phase is benefit to the coating.

Copyright

© 2016, 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  - Binfeng He
PY  - 2016/04
DA  - 2016/04
TI  - Microstructure and Properties of Ni-based and Fe-based coatings by Thermal Spray
BT  - Proceedings of the 2016 International Conference on Electrical, Mechanical and Industrial Engineering
PB  - Atlantis Press
SP  - 150
EP  - 153
SN  - 2352-5401
UR  - https://doi.org/10.2991/icemie-16.2016.37
DO  - 10.2991/icemie-16.2016.37
ID  - He2016/04
ER  -