Mechanical properties and tribological behavior of magnetron sputtered TiAlN/TiAl multilayer coatings

Шугуров, А. Р.; Kazachenok, Marina

doi:10.1016/j.surfcoat.2018.09.001

Cited by 47 publications

(18 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The high degree of hardness achieved (exceeding even 50 GPa [43,44]) is given by the interfaces between layers, acting as energy barriers that counteract the motion of dislocations [45,46]. Several nanolayered superlattice hard coatings have already been tested in recent years, including TiN/NbN, TiAlN/CrAlN, and CrN/NbN, as an environmentally friendly replacement for hard chromium [47][48][49][50][51][52][53][54][55][56][57][58][59][60]; moreover, these have shown good wear resistance [61].The evolution of conventional hard coatings for cutting tool applications has been intensively investigated [62] and the market's requests to increase productivity and sustainability (i.e., through the reduction of lubricants) of the machining processes, together with reduced costs and lead time [63], suggest the need to fully exploit the potential of advanced hard coatings, which are already available, in order to evaluate their potential use for cutting tool applications. Therefore, the aim of the present paper is to investigate the dry sliding wear performance of two commercially available coatings-a multilayer AlTiCrN and a superlattice (nanolayered) CrN/NbN deposited on a S600 high speed steel.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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).

show abstract

mentioning

confidence: 99%

mentioning

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

View full text Add to dashboard Cite

show abstract

“…Nowadays, among several mold materials, nitride-coated (e.g. TiN, AlTiN and CrN [5,14,15]) metal substrates, obtained by Physical Vapor Deposition (PVD) method, show improved mechanical properties and good wear/corrosion resistance [14,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…On the contrary, as concern the second modus operandi, the release agents allow the reduction of mold fouling; they are deposited as a very thin layer to the mold surfaces, covering them uniformly and acting as a barrier that prevents the rubber sticking.Nowadays, among several mold materials, nitride-coated (e.g. TiN, AlTiN and CrN [5,14,15]) metal substrates, obtained by Physical Vapor Deposition (PVD) method, show improved mechanical properties and good wear/corrosion resistance [14,[16][17][18].The surface wettability by a liquid is defined in terms of both spreading coefficient (S) and work of adhesion (W a ), by evaluating both the surface free energy of substrate and the surface tension (γ) of the liquid. Thus, if these two proprieties are similar, the mold release spontaneously wets the surface.…”

mentioning

confidence: 99%

Insight into the Release Agents/PVD Coatings Interaction for Plastic Mold Technology

et al. 2020

View full text Add to dashboard Cite

In polymer processing, the formation of undesired fouling hinders the plastic manufacturing processes. Hence, the use of emulsions as releasing agents is mandatory and their affinity to the mold substrates plays a crucial role. Therefore, this research work has been focused on the wetting properties of commercial water-based release agents (namely Marbocote ® W2140, EP, EV-333) towards different Physical Vapor Deposition (PVD) nitride coatings (AlTiN, NbN, ZrN and TiN), usually adopted in the industrial manufacture of Hydrogenated Nitrile Butadiene Rubber (HNBR). The investigated solid substrates were characterized by means of profilometry, SEM/EDX and Surface Free Energy (SFE) analyses, whereas, tensiometric determinations were acquired on the commercial pure and diluted emulsions. The release agents/mold substrates wettability features were studied by means of the work of adhesion and the spreading coefficient. Finally, nitride-coated mold seals were directly tested in an industrial plant with the most performing release agent in terms of adhesive features; for the first time, a deep correlation between the service life, in terms of number of molded seals, and surface (contact angles, work of adhesion and spreading coefficient)/electrochemical (OCP) features was drawn. IntroductionPolymer processing technology, including injection and compression molding [1-3], entails a prolonged polymer/metal tool contact. Hence their adhesion [4][5][6], depending on the process conditions, the solid tool surface features (type, roughness and surface free energy) and the polymer chemistry, plays a pivotal role in affecting the quality of the final plastic product.However, when the affinity between the polymers and the mold substrates is relatively low, the formation of mold fouling [7] occurs, causing the interruption of the plastic manufacturing process. Specifically, mold fouling is a layer of material, which forms on the surface of metal molds during the rubber vulcanization. Indeed, it is the result of thermochemical changes in components of rubber compounds during high temperature molding condition, impeding the heat transfer from the mold to the polymer. Thus, in order to obtain defect-free rubber articles, mold fouling must be removed from the metal surface tools by means of regular cleanings, therefore representing an onerous step for the industry (i.e. the production line shutdown, the use of expensive chemical products).Hence, two approaches can be followed to limit the mold fouling phenomena. The first one consists in the modification of the rubber formulation, for example by choosing the right plasticizing agents, such as extender oils [8,9]. The second approach involves the use of release agents [10,11] (typically emulsion-based compounds [12,13]), which are applied to the mold surfaces to ensure the total removal of the undesired products from the surfaces themselves. Regarding the former, the plasticizer is fundamental for the vulcanizing process, because this component allows the phase transitions. However, ba...

show abstract

“…Along with formation of hierarchical microstructures, which allow improvement of mechanical characteristics of Ti-Al-N, 30,31 the most effective way for solving this problem is the introduction of additional alloying elements into Ti 1−x Al x N, that is, obtaining of quaternary, quinary, etc.…”

mentioning

confidence: 99%

Chemical Bonding Analysis in Ti1-x-yAlxTayN Solid Solutions

Eremeev

Shugurov²

2019

Preprint

View full text Add to dashboard Cite

A comprehensive study of the evolution of electronic structure and chemical bonding in disordered Ti 1−x Al x N and Ti 1−x−y Al x Ta y N systems was performed by means of ab initio density functional theory calculations using crystal orbital Hamilton population technique. Progressive changes in the character of interatomic chemical bonding were revealed when sequentially alloyed TiN with Al and Ta. Alloying TiN with Al leads to the change in the Ti-N bonding character from ionic to covalent, whereas Al-N bonds being strongly ionic. The following alloying of Ti 1−x Al x N solid solutions with Ta results in a significant reduction of the ionicity of the Al-N bonds, while retaining the covalency of the Ti-N bonds. In addition, alloying with Ta introduces metallic character of chemical bonding in Ti 1−x−y Al x Ta y N, with the degree of metallicity increasing with growing Ta concentration. The gain in metallicity was found to be provided not only by Ta-Ta bonds, which make the main contribution, but also by Ta-N bonds, which have covalent-metallic character. A strong dependence of bonding energies in Ti 1−x Al x N and Ti 1−x−y Al x Ta y N on local atomic surrounding was found. * To whom correspondence should be addressedTitanium nitride (TiN) is currently used as a structural and functional material in a variety of applications because of its unique properties. 1,2 First of all, TiN has high hardness, wear and corrosion resistance as well as high thermal stability, which are of crucial importance for protective and decorative coatings. 3,4 In addition, it is characterized by good diffusion barrier properties, low electrical resistivity, increased optical reflectance 5,6 and compatibility with complementary metal-oxide-semiconductor (CMOS) processes, that makes it promising for diffusion barrier and gate applications, 7 solar cell 8 and infrared reflector 9,10 applications as well as a coating for electrode materials in lithium-ion batteries. [11][12][13] Recently, TiN thin films were also suggested as alternative plasmonic material, 14-18 exhibiting less loss and providing other practical advantages compared to noble metals. However, easy oxidation of TiN already at temperatures of 500-550 • C, and its inherent brittleness restrict the field of its possible application in extreme thermal and mechanical conditions. 19,20 An effective method of increasing TiN oxidation resistance is its alloying with aluminum. Since aluminum (as titanium) can form an fcc crystal phase, 21 it substitutes for titanium in the crystal lattice of the nitride. The addition of Al to TiN coatings drastically increases their resistance to oxidation (from 500 • C to 800 • C), and also ensures the preservation of high values of hardness and wear resistance at temperatures up to 900-950 • C. [22][23][24] Moreover, due to their variable optical properties TiAlN-based coatings are very promising for photothermal and solar energy applications. 25,26 However, the necessity to enhance the efficiency of photothermal conversion of concentrating solar ...

show abstract

Mechanical properties and tribological behavior of magnetron sputtered TiAlN/TiAl multilayer coatings

Cited by 47 publications

References 39 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

Insight into the Release Agents/PVD Coatings Interaction for Plastic Mold Technology

Chemical Bonding Analysis in Ti1-x-yAlxTayN Solid Solutions

Contact Info

Product

Resources

About