Multifunctional Ti based carbonitride coatings for applications in severe environments; Thin Solid Films; Vol. 682

Multifunctional Ti based carbonitride coatings for applications in severe environments; Thin Solid Films; Vol. 682

Bibliografiska uppgifter
Parent link:Thin Solid Films
Vol. 682.— 2019.— [P. 63-75]
Institutionell upphovsman: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий Научно-исследовательский центр "Физическое материаловедение и композитные материалы"
Övriga upphovsmän: Pruncu C. I., Vladesku A. Alina, Parau A. C. Anca Constantina, Braic M. Mariana, Dearn K. D., Constantin L. Lidia, Braic V. T. Viorel
Sammanfattning:Title screen
In this work, the influence of NbZr and ZrSi addition to TiCN coatings are studied, aiming for their use as protective layers for parts subjected to severe corrosion and wear. The coatings with C/N ratios ranging from 0.4 to 2.5 were deposited using the cathodic arc technique in a mixture of N2 and CH4 gases, on 316 stainless steel discs and Si (111) wafers. All the coatings exhibited residual compressive stresses, with values ranging from approximately-2.4 GPa to - 3.5 GPa. The addition of Si led to an increase in hardness, regardless of the C/N ratio. All coatings with high C/N ratio (~2.5) presented slightly lower stress values and superior performance in 3.5% NaCl corrosive solutions, the best performance being obtained for the TiSiZrCN coating, which exhibited the highest protective efficiency to corrosion (97.8%), due to its low corrosion current density (1.734 [mu]A/cm2) and high polarization resistance (31.775 k[omega]). The tribological tests, performed at 23°С and 250°С, indicated that abrasion and oxidation were the predominant wear mechanism for all coatings. At 23°С, the friction coefficients of the coated specimens were significantly lower than those of the uncoated samples. When the collective performance across all of the experimental parameters was assessed, the coatings with C/N of about 2.5 proved to be the most suitable candidates to be used in severe service conditions.
Режим доступа: по договору с организацией-держателем ресурса
Språk:engelska
Publicerad: 2019
Ämnen:
электронный ресурс
труды учёных ТПУ
TiCN
hard coatings
corrosion
wear resistance
cathodic arc deposition
покрытия
коррозия
износостойкость
напыления
Länkar:https://doi.org/10.1016/j.tsf.2019.04.052
Materialtyp: Elektronisk Bokavsnitt
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663942

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