Long-term behaviour of Nb and Cr nitrides nanostructured coatings under steam at 650 °C. Mechanistic considerations

Agüero, Alina; Juez‐Lorenzo, M.; Hovsepian, P.Eh.; Ehiasarian, Arutiun P.; Purandare, Yashodhan; Muelas, R.

doi:10.1016/j.jallcom.2017.12.288

Cited by 9 publications

(2 citation statements)

References 20 publications

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“…The superlattice coating was obtained through the deposition of alternating layers of CrN and NbN with a period of 4 nm. It is worth noting that while the AlTiN system with chromium added is well known for high temperature applications [66][67][68][69], the CrN/NbN system has been recently proposed for this purpose [70][71][72].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Temperature-Related Wear Performance of Hard Nanostructured Coatings Deposited on a S600 High Speed Steel

Santecchia

Cabibbo

Musharavati

et al. 2019

Metals

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Thin hard coatings are widely known as key elements in many industrial fields, from equipment for metal machining to dental implants and orthopedic prosthesis. When it comes to machining and cutting tools, thin hard coatings are crucial for decreasing the coefficient of friction (COF) and for protecting tools against oxidation. The aim of this work was to evaluate the tribological performance of two commercially available thin hard coatings deposited by physical vapor deposition (PVD) on a high speed tool steel (S600) under extreme working conditions. For this purpose, pin-on-disc wear tests were carried out either at room temperature (293 K) or at high temperature (873 K) against alumina (Al2O3) balls. Two thin hard nitrogen-rich coatings were considered: a multilayer AlTiCrN and a superlattice (nanolayered) CrN/NbN. The surface and microstructure characterization were performed by optical profilometry, field-emission gun scanning electron microscopy (FEGSEM), and energy dispersive spectroscopy (EDS).

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Section: Introductionmentioning

confidence: 99%

Investigation of the Temperature-Related Wear Performance of Hard Nanostructured Coatings Deposited on a S600 High Speed Steel

Santecchia

Cabibbo

Musharavati

et al. 2019

Metals

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“…The surface film contained some micrometric pores and defects (the sizes of some of which are shown in Figure 2 F); moreover, it also displayed equally small clusters (some of which are encircled in Figure 2 F). This morphology is typical of micrometer-thin coatings deposited by physical vapor deposition (PVD) processes, especially those deposited using sputtering sources [ 22 ]. EDX spectra clarified that the surface film was based on Nb and contained some oxygen ( Figure 3 B,D—Spectrum 1).…”

Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Metallurgical Features of New Green NiTi Reciprocating Instruments

et al. 2020

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To evaluate the properties of two nickel–titanium (NiTi) reciprocating endodontic instruments (commercially known as Procodile and Reziflow), a total of 40 size 25 and 0.06 taper new Procodile and Reziflow instruments (n = 20) were subjected to cyclic fatigue tests (60° angle of curvature, 5-mm radius) at 20 °C and 37 °C and a torsional test based on ISO 3630-1. The fracture surface of each fragment was examined. The morphological, mechanical, chemical, thermal, and phase composition characteristics of the files were investigated by field-emission gun scanning electron microscopy (FEG-SEM) equipped with an energy-dispersive X-ray (EDX) detector, focused ion beam analysis (FIB), micro-Raman spectroscopy, X-ray diffraction (XRD), differential scanning calorimetry (DSC), and Auger electron spectroscopy (AES). Reziflow showed higher cyclic fatigue resistance than Procodile at 37 °C (p < 0.05). The maximum torsional strength of Procodile was lower than that of Reziflow (p < 0.05). No difference was found between their angular rotations to fracture (p > 0.05). SEM, FIB, Micro-Raman, and AES analyses revealed the presence of an Nb/Nb2O5 coating on the Procodile surface. DSC and XRD analysis confirmed that both files consist of an almost austenitic phase structure at 37 °C. The cyclic fatigue resistance of Procodile and Reziflow significantly decreases upon exposure to body temperature.

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Annealing Effect on Nb Additive CrYN Thin Films Deposited by Magnetron Sputtering

YAYLALI>

Gülten

Yeşilyurt

et al. 2023

Lecture Notes in Mechanical Engineering

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Long-term behaviour of Nb and Cr nitrides nanostructured coatings under steam at 650 °C. Mechanistic considerations

Cited by 9 publications

References 20 publications

Investigation of the Temperature-Related Wear Performance of Hard Nanostructured Coatings Deposited on a S600 High Speed Steel

Investigation of the Temperature-Related Wear Performance of Hard Nanostructured Coatings Deposited on a S600 High Speed Steel

Mechanical Properties and Metallurgical Features of New Green NiTi Reciprocating Instruments

Annealing Effect on Nb Additive CrYN Thin Films Deposited by Magnetron Sputtering

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