Corrosion Behavior of Low Pressure Cold Sprayed Al-PTFE Composites Coating

DOI

10.2991/icmmita-15.2015.326How to use a DOI?

Keywords

Polymer blends and alloys; PTFE; Low Pressure Cold Spray; Corrosion.

Abstract

The purpose of this paper is to examine whether low pressure cold spray can deposit high quality Al-PTFE Composites Coating or not. Different Polytetrafluoroethylene (PTFE) content Al-PTFE composite powders were used to deposit composites coating with low pressure cold spraying methods under the parameter about 215? and 0.7MPa on mild steel substrate. And the microstructure and chemical content are analyzed by SEM and XRD methods. Anticorrosion performance of coating with 2% PTFE was examined in natural seawater by electrochemical methods. No good quality composites coating can be deposited as the content of PTFE exceeds 5% because of the low bonding strength of PTFE. The deposition efficiency is much high as the PTFE content increases to 20%. The bond strength between coating and substrate and inner coating are both low due to the high PTFE content in coating and interface. Anticorrosion performance of Al-PTFE is about the same as Al coating because the content of PTFE in coating is rather small.

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/).

Download article (PDF)

TY  - CONF
AU  - Guosheng Huang
PY  - 2015/11
DA  - 2015/11
TI  - Corrosion Behavior of Low Pressure Cold Sprayed Al-PTFE Composites Coating
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1753
EP  - 1757
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.326
DO  - 10.2991/icmmita-15.2015.326
ID  - Huang2015/11
ER  -