Micromechanical interaction of nitinol with carbon-based coatings; Diamond and Related Materials; Vol. 166

Micromechanical interaction of nitinol with carbon-based coatings; Diamond and Related Materials; Vol. 166

Detaylı Bibliyografya
Parent link:Diamond and Related Materials.— .— Amsterdam: Elsevier B.V.
Vol. 166.— 2026.— Article number 113732, 16 p.
Diğer Yazarlar: Grenaderov A. S. Aleksandr Sergeevich, Solovjev A. A., Madzhara N. E. Nikita Evgenjevich, Dzhambulova T. Tomiris, Oskomov K. V. Konstantin Vladimirovich, Zuza D. A. Daniil Aleksandrovich, Semin V. O. Viktor Olegovich, Yasenchuk Yu. F., Chekalkin T. L., Yuriev Yu. N. Yuri Nikolaevich, Runts А. А. Artem Alekseevich, Korneva O. S. Olga Sergeevna, Volynsky A. A.
Özet:Title screen
The micromechanical properties, adhesion, and surface roughness of silicon- and oxygen-containing hydrocarbon coatings (a-C:H:SiOx) and their titanium-doped counterpart (a-C:H:SiOx:Ti), as well as a non‑hydrogenated DLC coating, deposited on a Ni49.9Ti50.1 (NiTi) alloy used for vascular stents, were investigated. Nanoindentation and microscratch tests revealed that the a-C:H:SiOx and a-C:H:SiOx:Ti coatings exhibit critical loads Lc1 of 18–23 N and ≥23 N, respectively, which significantly exceed those of the DLC coating (4–8 N). The hardness of the a-C:H:SiOx and a-C:H:SiOx:Ti coatings is 14–15 GPa, whereas the DLC coating has a hardness of approximately 41 GPa. Transmission electron microscopy and X-ray photoelectron spectroscopy showed that all coatings are amorphous; titanium doping (0.6 at.%) does not lead to the formation of Tisingle bondC chemical bonds. The a-C:H:SiOx and a-C:H:SiOx:Ti coatings retain a low average surface roughness (Sa ≈ 0.21–0.28 μm) with pronounced valleys (Sv ≈ 0.77–0.99 μm), while the DLC coating increases the roughness to Sa ≈ 0.30 μm. The combination of high adhesion, moderate hardness, and favorable surface topography makes a-C:H:SiOx-type coatings, particularly the Ti-doped variant, a promising approach for enhancing the functionality and durability of NiTi-based vascular stents
Текстовый файл
AM_Agreement
Dil:İngilizce
Baskı/Yayın Bilgisi: 2026
Konular:
Nitinol
Vascular stents
Hydrocarbon coatings
Diamond-like carbon
Adhesion
Micromechanics
электронный ресурс
труды учёных ТПУ
Online Erişim:https://doi.org/10.1016/j.diamond.2026.113732
Materyal Türü: Elektronik Kitap Bölümü
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=687391

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