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Statements

Subject Item
n2:RIV%2F68407700%3A21220%2F12%3A00194015%21RIV13-MSM-21220___
rdf:type
skos:Concept n5:Vysledek
dcterms:description
The requirements for materials used in the machine parts production, especially their functional characteristics and service life are currently increasing. Thin ceramic coatings deposited on the surface of tools and machine parts by PVD methods improve considerably their tribological properties. These hard brittle coatings can be damaged rapidly if a plastic deformation initiates in the substrate near the coating-substrate interface when subject to relatively high intensity loading. Therefore, the strengthening of substrate surface layers, e.g. by plasma nitriding, appears to be a suitable solution of the low strength of the substrate. The paper resumes results of tribological testing of duplex coating tool steels. Steel samples (31CrMoV9) were nitrated and subsequently treated by PVD process. There were deposited different coatings (TiN, CrN, TiAlN and multilayer 3x(CrN-TiN)) with thickness 1 and 3µm. Samples were tested and characteristics like nanohardness, hardness of duplex coating, friction coefficient (pin on disc), coating thickness (Calotest), resistance against abrasion (Scratch test) and adhesive wear (HEF) were measured. Results of friction coefficient and wear measured by %22HEF%22 tribometer are summarized in this paper. The conclusions drawn from the experiment show that duplex treatment is a useful way to increase the die service life. Current thin wear-resistant surface layers and duplex coatings bring remarkable extension of service life and reliability to parts, tools and dies as confirmed by this research. Still most coating technologies have not managed to reach the limits of their possibilities so far. The requirements for materials used in the machine parts production, especially their functional characteristics and service life are currently increasing. Thin ceramic coatings deposited on the surface of tools and machine parts by PVD methods improve considerably their tribological properties. These hard brittle coatings can be damaged rapidly if a plastic deformation initiates in the substrate near the coating-substrate interface when subject to relatively high intensity loading. Therefore, the strengthening of substrate surface layers, e.g. by plasma nitriding, appears to be a suitable solution of the low strength of the substrate. The paper resumes results of tribological testing of duplex coating tool steels. Steel samples (31CrMoV9) were nitrated and subsequently treated by PVD process. There were deposited different coatings (TiN, CrN, TiAlN and multilayer 3x(CrN-TiN)) with thickness 1 and 3µm. Samples were tested and characteristics like nanohardness, hardness of duplex coating, friction coefficient (pin on disc), coating thickness (Calotest), resistance against abrasion (Scratch test) and adhesive wear (HEF) were measured. Results of friction coefficient and wear measured by %22HEF%22 tribometer are summarized in this paper. The conclusions drawn from the experiment show that duplex treatment is a useful way to increase the die service life. Current thin wear-resistant surface layers and duplex coatings bring remarkable extension of service life and reliability to parts, tools and dies as confirmed by this research. Still most coating technologies have not managed to reach the limits of their possibilities so far.
dcterms:title
Wear Resistance of Duplex Coated Cr-Mo-V Alloyed Steel Wear Resistance of Duplex Coated Cr-Mo-V Alloyed Steel
skos:prefLabel
Wear Resistance of Duplex Coated Cr-Mo-V Alloyed Steel Wear Resistance of Duplex Coated Cr-Mo-V Alloyed Steel
skos:notation
RIV/68407700:21220/12:00194015!RIV13-MSM-21220___
n5:predkladatel
n6:orjk%3A21220
n8:aktivita
n18:S
n8:aktivity
S
n8:dodaniDat
n12:2013
n8:domaciTvurceVysledku
n21:3454673 n21:8115095
n8:druhVysledku
n17:D
n8:duvernostUdaju
n20:S
n8:entitaPredkladatele
n10:predkladatel
n8:idSjednocenehoVysledku
180772
n8:idVysledku
RIV/68407700:21220/12:00194015
n8:jazykVysledku
n16:eng
n8:klicovaSlova
Friction Coefficient; Wear Resistance; Duplex Coating; HEF; PVD
n8:klicoveSlovo
n14:Duplex%20Coating n14:HEF n14:Friction%20Coefficient n14:PVD n14:Wear%20Resistance
n8:kontrolniKodProRIV
[816560D1C671]
n8:mistoKonaniAkce
Brno
n8:mistoVydani
Ostrava
n8:nazevZdroje
Metal 2012
n8:obor
n11:JR
n8:pocetDomacichTvurcuVysledku
2
n8:pocetTvurcuVysledku
2
n8:rokUplatneniVysledku
n12:2012
n8:tvurceVysledku
Kolaříková, Marie Suchánek, Jan
n8:typAkce
n9:EUR
n8:zahajeniAkce
2012-05-23+02:00
s:numberOfPages
4
n4:hasPublisher
TANGER spol. s r.o.
n15:isbn
978-80-87294-29-1
n7:organizacniJednotka
21220