Two-body dry abrasive wear performance of high velocity oxygen fuel spray process and electrodeposited cermet coatings
In order to protect parts against wear, the carbon steel used are commonly coated by cermet coatings to increase the wear resistance. In this paper, the coatings consist of tungsten carbide 17 wt% cobalt (WC-17Co), tungsten carbide 9 wt% nickel (WC-9Ni), electrodeposited nickel (electro Ni) and elec...
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| Format: | Article |
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Trans Tech Publications
2017
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| Online Access: | doi:10.4028/www.scientific.net/MSF.888.131 doi:10.4028/www.scientific.net/MSF.888.131 |
| Summary: | In order to protect parts against wear, the carbon steel used are commonly coated by
cermet coatings to increase the wear resistance. In this paper, the coatings consist of tungsten
carbide 17 wt% cobalt (WC-17Co), tungsten carbide 9 wt% nickel (WC-9Ni), electrodeposited
nickel (electro Ni) and electrodeposited nickel-silicon carbide (electro Ni-SiC) coatings. All
coatings are deposited onto AISI 1018 carbon steel by using two different methods which are high
velocity oxygen fuel (HVOF) and co-electrodeposition method. Abrasive wear test were observed
under two-body dry abrasion conditions with pin-on-disc test arrangement. Based on the volume
loss after the wear test, the wear rates were calculated by using Archard’s law. The wear tracks were
investigated by using scanning electron microscope (SEM) and atomic force microscopy (AFM).
The hardness of each coating was measured by using Vickers microhardness. The results showed
that HVOF coatings have lower wear rate compared to the electrodeposited coatings. WC-9Ni has
the lowest wear rate which is 4.06×10-3 mm3/Nm much lower compared to electro Ni-SiC of
16.36×10-3 mm3/Nm. This result was expected as the hardness of WC-9Ni is 1625.37 HV higher
than electrodeposited coatings which approximately 380.51 HV. In conclusion, the methods of
coating deposited affect the wear resistance as well as the hardness of the coatings. |
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