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Process and properties of spray-aluminized coating on cast iron

Authors :
HU Ning
FAN Zi-shuan
Source :
工程科学学报, Vol 39, Iss 6, Pp 889-895 (2017)
Publication Year :
2017
Publisher :
Science Press, 2017.

Abstract

Aluminum-based coatings were prepared by flame spraying. After remelting and diffusion treatment, the phase, composition, friction and corrosion resistance were analyzed experimentally by using scanning electron microscopy, X-ray diffraction, energy dispersive spectrometer, wear tester. The results indicate that the surface phase consists of Al and FeAl3, inner layer phase mainly contains FeAl 3 and Fe2 Al5. The coating has higher micro-hardness than the underlying material, with a maximum of up to HV 950. In an experiment of high-temperature oxidation at 800℃ and 900℃, the spray-aluminized samples show almost no weight gain, and the antioxidant properties of cast iron improve substantially (by dozens of times). In addition, the samples show excellent wear and corrosion resistance.

Details

Language :
Chinese
ISSN :
20959389
Volume :
39
Issue :
6
Database :
Directory of Open Access Journals
Journal :
工程科学学报
Publication Type :
Academic Journal
Accession number :
edsdoj.92e3bc65884c417f83d8af840f4c4c4b
Document Type :
article
Full Text :
https://doi.org/10.13374/j.issn2095-9389.2017.06.011