| dc.creator | Mariana, Staia | |
| dc.creator | Maribel, Suárez | |
| dc.creator | Eli, Puchi-Cabrera | |
| dc.date | 2013-09-26T23:44:03Z | |
| dc.date | 2013-09-26T23:44:03Z | |
| dc.date | 2013-09-26 | |
| dc.date.accessioned | 2022-10-28T00:54:49Z | |
| dc.date.available | 2022-10-28T00:54:49Z | |
| dc.identifier | 0257-8972 | |
| dc.identifier | http://hdl.handle.net/10872/4248 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4938580 | |
| dc.description | The present investigation has been carried out with the aim of determining the tribological behavior of a VPS
chromium carbide coating both in the as-deposited and heat-treated conditions. A commercial powder of
Cr2C3–25% NiCr was sprayed employing a VPS system (Medicoat AG, Switzerland) onto plain low carbon
steel coupons. The samples were subsequently annealed for 2 h at 600 °C, 800 °C and 900 °C in Ar. The microstructural
characterization was carried out by using SEM and XRD before and after the heat treatment
of the samples. SEM observations were employed for determining the degradation mechanisms that took
place during the wear tests. When the coated systems rubbed against alumina under a 5 N normal load in
air, a progressive change in the mechanism, from a mixed adhesive and abrasive, to a predominant abrasive
was observed, as the heat treatment temperature increased. The wear constants were found to be of the order
of approximately 10−6 mm3/N.m, which indicates a wear resistance of nearly 4 times higher in comparison
with the wear results reported in the literature for similar coating systems obtained by employing HVOF deposition.
However, the heat treatment carried out at 900 °C brought about only 20% increase in the sliding
wear resistance of the coated system. | |
| dc.description | The !nancial support of the CDCH-UCV through the Project No. PI
08-7728-2009/1 is gratefully acknowledged. EMPA-Materials Science
& Technology, Switzerland, is also acknowledged for providing the
samples | |
| dc.language | en_US | |
| dc.subject | Cr2C3–NiCr coatings | |
| dc.subject | VPS deposition | |
| dc.subject | Tribological behavior | |
| dc.subject | Wear mechanisms | |
| dc.subject | Wear resistance | |
| dc.title | Cr2C3–NiCr VPS thermal spray coatings as candidate for chromium replacement | |
| dc.type | Article | |
