TiSiN(Ag) films deposited by HiPIMS working in DOMS mode: Effect of Ag content on structure, mechanical properties and thermal stability

Cavaleiro, D.; Carvalho, S.; Cavaleiro, A.; Fernandes, Filipe

doi:10.1016/j.apsusc.2019.01.174

Cited by 25 publications

(16 citation statements)

References 40 publications

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“…In addition, it is possible to observe cauliflower-type morphology in all the coatings. These results are similar to those reported by other authors, where cauliflower-type morphology occurs when small grains combine to form a large column-size structure [24,36]. Furthermore, it has been reported that the HiPIMs technique generates a high degree of ionization flux, which improves the roughness and density of coatings [24].…”

Section: Morphological Characterizationsupporting

confidence: 91%

The Structural and Mechanical Properties of CrAlTiN-Si Nanostructured Coatings Deposited by the Means of High-Power Impulse Magnetron Sputtering

Ordóñez Jiménez,

Vanegas,

Moreno

et al. 2023

Metals

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CrAlTiN-Si coatings have demonstrated their ability to prolong the operational life and improve the performance of cutting tools, primarily attributable to their exceptional mechanical, thermal, and tribological properties. Consequently, this investigation focused on the deposition of CrAlTiN-Si coatings utilizing the high-power impulse magnetron sputtering (HiPIMS) technique. The chemical composition, morphology, and microstructure of these coatings, as well as their mechanical and tribological properties, were investigated. The obtained results revealed that the incorporation of silicon into the CrAlTiN matrix significantly influenced the chemical composition, microstructure, and mechanical properties of the coatings. Specifically, silicon contents ranging from 0 to 1.0 at.% led to the formation of a face-centered cubic (fcc) solid solution within the coatings, resulting in a reduction in the lattice parameter from 0.412 nm to 0.409 nm. However, when the silicon content reached 1.9 at.%, a nanocomposite phase comprising an fcc solid solution of CrAlTiSiN and an amorphous phase of SiNx was observed, along with an increase in the lattice parameter from 0.409 nm to 0.413 nm. An XPS analysis confirmed the presence of oxides in all the coatings, but only the sample with a silicon content of 1.9 at.% showed the presence of Si-N bonds. Furthermore, all the coatings exhibited a distinctive cauliflower-type morphology. The nano-hardness testing demonstrated that the incorporation of silicon resulted in coatings with high nano-hardness values, from 20.0 GPa for the sample without silicon to 22.2 GPa when the silicon content was 1.9 at.%. Moreover, as the Si content increased, the presence of silicon contributed to enhancements in the toughness and fracture resistance of the coating.

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Section: Morphological Characterizationsupporting

confidence: 91%

The Structural and Mechanical Properties of CrAlTiN-Si Nanostructured Coatings Deposited by the Means of High-Power Impulse Magnetron Sputtering

Ordóñez Jiménez,

Vanegas,

Moreno

et al. 2023

Metals

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“…Several studies have reported the formation of Ag-containing nanocomposites by sputtering. For example, TiSiN:Ag [ 8 ] and TiCN:Ag [ 9 ] nanocomposites were produced by reactively sputtering from a Ti target which contained either Si and Ag, or just Ag pellets, respectively. Domingues and coworkers followed a similar approach to produce AlN:Ag nanocomposites from an Al target comprising a variable number of Ag pellets [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Ag Surface and Bulk Segregations in Sputtered ZrCuAlNi Metallic Glass Thin Films

et al. 2022

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We report on the formation of Ag-containing ZrCuAlNi thin film metallic glass (nano)composites by a hybrid direct-current magnetron sputtering and high-power pulsed magnetron sputtering process. The effects of Ag content, substrate temperature and substrate bias potential on the phase formation and morphology of the nanocomposites were investigated. While applying a substrate bias potential did not strongly affect the morphological evolution of the films, the Ag content dictated the size and distribution of Ag surface segregations. The films deposited at low temperatures were characterized by strong surface segregations, formed by coalescence and Ostwald ripening, while the volume of the films remained featureless. At higher deposition temperature, elongated Ag segregations were observed in the bulk and a continuous Ag layer was formed at the surface as a result of thermally enhanced surface diffusion. While microstructural observations have allowed identifying both surface and bulk segregations, an indirect method for detecting the presence of Ag segregations is proposed, by measuring the electrical resistivity of the films.

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“…Hence, the re nement or elimination of columnar structure are expected to enhance corrosion and tribocorrosion resistance by the formation of nanocomposite or multilayer structure [10,11]. A lot of work has been done for the re ned CrSiN [21] or TiSiN [9,22] based nanocomposite and multilayer structure (CrN/TiN [23], CrN/NbN [24], etc.) by the addition of Si and the formation of coherent interfaces.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Tribocorrosion Resistance of Superhard Ti-C-N Ceramics Coatings

Wang

Liao

et al. 2021

Preprint

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Cubic transition-metal nitride coatings have been regarded as promising candidates for of marine engineering components in seawater environments. However, the excellent seawater lubrication is hard to achieve due to contradictory relations of hardness and toughness, as well as unstable behaviors at sliding contact surface. As discussed in our previous work about the enhanced tribological behaviors of hard yet tough CrN/Si3N4 multilayer coatings[14], superhard yet tough coatings are highly desired to improve wear resistance and durability in aggressive solutions. Here we report Ti-C-N coatings with Ti(C,N) and small sp2-C phases deposited by high power impulse magnetron sputtering exhibit simultaneously superhardness of 40.2 GPa and favourable toughness (without radial cracks in HRC indentations). Superhard yet tough Ti-C-N coatings show excellent seawater-lubricating behaviors with extremely low friction coefficient of 0.03 and smooth wear morphologies in 3.5wt.% NaCl aqueous solution. The enhanced tribocorrosion performance are attributed to superhard yet tough properties resulting in the increased resistance of crack initiation and propagation, which restrains synergistic actions of wear and pitting corrosion. In addition, stable self-lubricating amorphous carbon phase at sliding contact surface reduce friction and wear in seawater.

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TiSiN(Ag) films deposited by HiPIMS working in DOMS mode: Effect of Ag content on structure, mechanical properties and thermal stability

Cited by 25 publications

References 40 publications

The Structural and Mechanical Properties of CrAlTiN-Si Nanostructured Coatings Deposited by the Means of High-Power Impulse Magnetron Sputtering

The Structural and Mechanical Properties of CrAlTiN-Si Nanostructured Coatings Deposited by the Means of High-Power Impulse Magnetron Sputtering

Ag Surface and Bulk Segregations in Sputtered ZrCuAlNi Metallic Glass Thin Films

Enhanced Tribocorrosion Resistance of Superhard Ti-C-N Ceramics Coatings

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