Evaporated vanadium nitride as a friction material in dry sliding against stainless steel

Wiklund, Urban; Casas, B.; Stavlid, Nils

doi:10.1016/j.wear.2005.09.003

Cited by 41 publications

(21 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the research done by Vitos et al [5] on VN-Fe(001) and TiN-Fe(001) systems, a better galling performance of VN coatings was predicted. These findings are in good agreement with experimental results, where VN coatings give a better resistance against work material transfer than TiN coatings in sliding against steel [14,15].…”

Section: Introductionsupporting

confidence: 90%

See 1 more Smart Citation

Galling resistance and wear mechanisms – cold work tool materials sliding against carbon steel sheets

et al. 2006

View full text Add to dashboard Cite

One of the major causes for tool failure in sheet metal forming is transfer and accumulation of adhered sheet material to the tool surfaces, generally referred to as galling. In the present work, the galling resistance of several tool materials was investigated against two-phase ferritic-martensitic carbon steel under dry sliding test conditions. Tribological evaluation was carried out at different contact pressures by using a slider-on-flat-surface (SOFS) tribometer. For all selected test conditions, a consistent ranking of the materials was obtained with best performance observed for nitrogen alloyed powder metallurgy tool steel. Worst galling resistance was observed by nodular cast iron.

show abstract

Section: Introductionsupporting

confidence: 90%

“…Special designed tool steels, introducing specific carbides and nitrides effectively increase the potential to resist work material transfer [11][12][13]. Particularly vanadium nitride has gained much attention in the recent years, since excellent improvements of tools life has been obtained in forming of, e.g., stainless steel [14,15].…”

Section: Introductionmentioning

confidence: 99%

Galling resistance and wear mechanisms – cold work tool materials sliding against carbon steel sheets

et al. 2006

View full text Add to dashboard Cite

show abstract

“…V-N is of interest for the applications requiring hard and corrosion resistant materials [21]. In the Mo-V-N coatings, as a function of the Mo and V targets, we observe no presence of C in our coatings, and they present up to 4 at.% of oxygen, which is negligible for the mechanical applications.…”

Section: Resultsmentioning

confidence: 61%

Characterisation of Mo–V–N Coatings Deposited on XC100 Substrate by Sputtering Cathodic Magnetron

Chermime¹,

Abboudi²,

Djebaili³

et al. 2017

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

The aim of this work is the characterization of ternary molybdenum-vanadium nitride (Mo-V-N) coatings deposited on silicon and XC100 steel substrates by the reactive radiofrequency dual magnetron sputtering with different contents of the Mo and V targets and nitrogen as reactive gas. The metal-target bias voltages are varied from 300 to 900 V. The hardness, surface morphology, microstructure and composition are studied by nanoindentation, scanning electron microscopy, atomic-force microscopy, and x-ray diffractometry. The Mo-V-N films manifest pyramidal surface morphology, high roughness (of 13.5 nm), but low mechanical properties. Hardness and Young's modulus are found in the ranges of 10-18 GPa and 100-335 GPa, respectively. The residual stresses of coatings are compressive and varied between 0.8 GPa and 2.5 GPa (calculated with the Stoney formula).Keywords: coatings, microstructure, residual stresses, roughness, hardness.Метою даної роботи є характеризація покриттів із трикомпонентного мо-лібден-ванадійового нітриду (Mo-V-N), що наносилися на кремнійові та сталеві (XC100) поверхні шляхом реактивного радіочастотного магнет-ронного двокатодного розпорошення цілей із різним вмістом Мо та V із використанням азоту в якості реакційноздатного газу. Відхили напруги зміщення металевої цілі варіювалися від 300 до 900 В. Твердість, морфо-логію поверхні, мікроструктуру та склад було досліджено за допомогою

show abstract

“…Motivated by these theoretical predictions and the lack of literature on VN-based alloys, I focused on the synthesis and characterization of potentially tough, pseudobinary TM nitride coatings with VN as the parent compound. VN is of interest for applications requiring hard, low-friction, wear-and corrosionresistant materials [69][70][71]. The binary V-N phase diagram shown in Fig.…”

Section: Transition-metal Nitridesmentioning

confidence: 99%

Toughness Enhancement in Hard Single-Crystal Transition-Metal Nitrides : V-Mo-N and V-W-N Alloys

Kindlund¹

2014

View full text Add to dashboard Cite

A mis Padres y Hermano, a la Abuela.ii iii ABSTRACT Transition-metal nitrides are known for their high hardness, good wear resistance, hightemperature stability, and chemical inertness. Because of these properties, they are extensively used in many industrial applications, notably as protective wear, erosion, and scratch resistant coatings, which are often subjected to high thermo-mechanical stresses. While high hardness is essential, most applications also require high ductility, to avoid brittle failure due to cracking. However, transition-metal nitrides, as most ceramics, generally exhibit low ductility and hence poor toughness.Improving toughness, the combination of hardness and ductility, of ceramic materials requires suppression of crack initiation and/or propagation, both of which depend on the microstructure, electronic structure, and bonding nature of the coating material. This, however, is an extremely challenging task that requires a fundamental understanding of the mechanical behavior of materials. Theoretical studies, for example, ab initio calculations and simulations are therefore useful in the design of "unbreakable" materials by providing information about the electronic origins of hardness and ductility. Recent density functional theory calculations predicted that alloying can increase toughness in a certain family of transition-metal nitrides such as V-Mo-N and V-W-N alloys. Toughness enhancement in these alloys arises from a near optimal filling of the metallic d-t 2g states, due to their high valence electron concentrations, leading to an orbital overlap which favors ductility during shearing.This thesis focuses on the growth and characterization of V 1-x Mo x N y (0 ≤ x ≤ 0.7, 0.55 ≤ y ≤ 1.03) and V 1-x W x N y (0 ≤ x ≤ 0.83, 0.75 ≤ y ≤ 1.13) cubic alloy thin films. I show that alloying VN with WN increases the alloy hardness and reduces the elastic modulus, an indication of enhanced toughness. I investigated the growth, nanostructure, and atomic ordering of as-deposited V 1-x W x N y (001)/MgO(001) thin films. In addition, I studied the growth, structural and mechanical properties, and electronic structure of V 1-x Mo x N y (001)/MgO(001) and V 0.5 Mo 0.5 N y (111)/Al 2 O 3 (0001) thin films. I demonstrate that these alloys exhibit not only higher hardness than the parent binary compound, VN, but also dramatically increased ductility. V 0.5 Mo 0.5 N hardness is more than 25% higher than that of VN. Using nanoindentation I show that while VN and TiN reference samples undergo severe cracking typical of brittle ceramics, V 0.5 Mo 0.5 N films do not crack. Instead, they exhibit material pile-up around nanoindents, characteristic of plastic flow in ductile materials. Furthermore, the wear resistance of V 0.5 Mo 0.5 N is significantly higher than that of VN. I also show, for the first time, anion-vacancy-induced toughening of single-crystal V 0.5 Mo 0.5 N y /MgO(001) films. Nanoindentation hardness of these alloys increases with the introduction of N-vacancies, while the elastic modulus remains ...

show abstract

Evaporated vanadium nitride as a friction material in dry sliding against stainless steel

Cited by 41 publications

References 2 publications

Galling resistance and wear mechanisms – cold work tool materials sliding against carbon steel sheets

Galling resistance and wear mechanisms – cold work tool materials sliding against carbon steel sheets

Characterisation of Mo–V–N Coatings Deposited on XC100 Substrate by Sputtering Cathodic Magnetron

Toughness Enhancement in Hard Single-Crystal Transition-Metal Nitrides : V-Mo-N and V-W-N Alloys

Contact Info

Product

Resources

About