Effects of substrate temperature and carbon content on the structure and properties of (CrCuNbTiY)C multicomponent coatings

Braic, V.; Parau, Anca Constantina; Pană, Iulian; Braic, M.; Bâlâceanu, M.

doi:10.1016/j.surfcoat.2014.07.044

Cited by 33 publications

(12 citation statements)

References 65 publications

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“…Similar results were also found in crystalline (CrCuNbTiY)C coatings and amorphous (CuSiTiYZr)C coatings [67,68]. Increasing the depositing temperature or altering the proportion of metals in the coatings can also improve the hardness of HEC coatings [46,68].…”

Section: Mechanical Properties Of Hec Coatingssupporting

confidence: 71%

“…In the early 2010s, The research team of Braic V. and Braic M. developed a series of 5-metal carbide coatings and films by direct current magnetron sputtering (DCMS), using an ATC ORION unit equipped with five cathodes [51,[65][66][67][68][69]. The coatings were prepared by co-sputtering of five different pure metal targets in an Ar + CH 4 reactive atmosphere, the phase composition, microstructure and surface morphology of the coatings could be changed by tuning of the target materials and the reactive atmosphere.…”

Section: Hec Coatings and Filmsmentioning

confidence: 99%

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Processing and properties of high entropy carbides

Wang

2021

Advances in Applied Ceramics

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High entropy carbides (HECs) are novel materials developed in recent years that have attracted a lot of research interests. Unlike traditional carbides (containing one or two metals), HECs with multiple metals could form a very large number of different compositions that could have interesting and promising properties. The high entropy effect stabilises multi-component carbide phases and forms compositions that might otherwise not be stable. After several years of investigation of HECs, several methods of synthesising HECs have been developed. The microstructures and properties of HECs have been studied and compared with traditional carbides. Many interesting discoveries in HECs have been made. This paper reviews the theories, technologies, findings and insights gained from previous studies on HECs. The basic theory of HECs, the prediction of synthesisability of HEC phases from theoretical calculations, and some rules observed from experimental results are summarised. The preparation methods of HECs (powders, coatings, films and ceramics) and their microstructures are reviewed. Their properties, including thermal and electrical, mechanical and tribological, and oxidation, irradiation, and corrosion resistance of HECs are reviewed and discussed. Compared with traditional carbides, there is a great potential to develop new HECs due to their designable and complex compositions, and this review can guide future studies.

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Section: Mechanical Properties Of Hec Coatingssupporting

confidence: 71%

Section: Hec Coatings and Filmsmentioning

confidence: 99%

Processing and properties of high entropy carbides

Wang

2021

Advances in Applied Ceramics

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“…(TiHfZrVNb)N [ 21 , 22 ][ 20 , 21 ], (ZrTaNbTiW)N [ 23 ], (TiVCrZrHf)N [ 24 , 25 ]), while studies on MPE carbide or carbonitride coatings are limited (e.g. (CuSiTiYZr)C [ 26 ], (CrCuNbTiY)C [ 27 ] (AlCrTaTiZr)N x C y [ 28 ]).…”

Section: Introductionmentioning

confidence: 99%

In Vitro Biocompatibility of Si Alloyed Multi-Principal Element Carbide Coatings

et al. 2016

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In the current study, we have examined the possibility to improve the biocompatibility of the (TiZrNbTaHf)C through replacement of either Ti or Ta by Si. The coatings were deposited on Si and 316L stainless steel substrates by magnetron sputtering in an Ar+CH4 mixed atmosphere and were examined for elemental composition, chemical bonds, surface topography, surface electrical charge and biocompatible characteristics. The net surface charge was evaluated at nano and macroscopic scale by measuring the electrical potential and work function, respectively. The biocompatible tests comprised determination of cell viability and cell attachment to the coated surface. The deposited coatings had C/(metal+Si) ratios close to unity, while a mixture of metallic carbide, free-carbon and oxidized species formed on the film surface. The coatings’ surfaces were smooth and no influence of surface roughness on electrical charge or biocompatibility was found. The biocompatible characteristics correlated well with the electrical potential/work function, suggesting a significant role of surface charge in improving biocompatibility, particularly cell attachment to coating's surface. Replacement of either Ti or Ta by Si in the (TiZrNbTaHf)C coating led to an enhanced surface electrical charge, as well as to superior biocompatible properties, with best results for the (TiZrNbSiHf)C coating.

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“…The main group element Al, transition elements including Cr, Ni, Cu, and refractory metal element W were used as components of quaternary HEAs to construct three HEAs, CuCrWNi, CuCrWMo, and CuCrWAl. Some studies have reported that adding C benefits the performance of HEAs [23][24][25]. Therefore, C is taken as the fifth element to discuss the effect of the addition of C on the properties of HEAs.…”

Section: Introductionmentioning

confidence: 99%

First‐Principles Calculations for the Enhancement of Mechanical Properties of High‐Entropy Alloys by Carbon Elements

Ding

Feng

Yuan

2023

IEEJ Transactions Elec Engng

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A series of alloy solid solution models were developed using the SQS modeling method, and the effect of C doping on the phase structure, elastic properties, and electronic structure of the alloys was investigated using a first‐principles approach. The results showed that the CuCrWNi (C), CuCrWMo (C), and CuCrWAl (C) alloys all have a single body‐centered cubic (BCC) structure. The alloys conformed to the mechanical stability criterion before and after incorporating C. The incorporation of C leads to an increase in the bulk modulus B of the CuCrWNi, CuCrWAl alloy, and the Young's modulus E and shear modulus G of the CuCrWMo, CuCrWAl alloy. In comparison, the shear modulus G and Young's modulus E of CuCrWNi alloy and the bulk modulus B of CuCrWMo alloy show a decreasing tendency. The alloy is ductile before and after the addition of C. The addition of C increased the Poisson's ratio, Pugh ratio, and Cauchy pressure of CuCrWNi alloy and decreased the Poisson's ratio, Pugh ratio, and Cauchy pressure of CuCrWMo and CuCrWAl. This shows that adding C improves the ductility of CuCrWNi and the strength of CuCrWMo and CuCrWAl alloys. By analyzing the electronic structure of the alloys, it was found that the doping of C made the alloy less stable. Adding C makes the high‐entropy alloys more conducive and the metallic properties more noticeable. Moreover, the incorporation of C makes the CuCrWNi pseudo‐energy gap decrease and the CuCrWMo, and CuCrWAl pseudo‐energy gap increase, which may be related to the change in the mechanical properties of the alloy. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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Effects of substrate temperature and carbon content on the structure and properties of (CrCuNbTiY)C multicomponent coatings

Cited by 33 publications

References 65 publications

Processing and properties of high entropy carbides

Processing and properties of high entropy carbides

In Vitro Biocompatibility of Si Alloyed Multi-Principal Element Carbide Coatings

First‐Principles Calculations for the Enhancement of Mechanical Properties of High‐Entropy Alloys by Carbon Elements

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