Effects of substrate bias voltage on the microstructure, mechanical properties and tribological behavior of reactive sputtered niobium carbide films

Zhang, Kan; Wen, Mao; Meng, Qingnan; Hu, Chaoquan; Li, Xiaotian; Liu, C.; Zheng, Weitao

doi:10.1016/j.surfcoat.2012.09.046

Cited by 49 publications

(27 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2. In other works, it was reported that increasing the absolute value of the bias voltage produces smoother NbC films (Zhang et al, 2012), but that increasing the growth temperature produces greater film roughness due to an increased in grain size (Zoita et al, 2010). The produced NbC coating (Fig.…”

Section: Resultsmentioning

confidence: 85%

“…For the M2 steel substrate, the characteristic peaks of martensite (α-Fe), iron carbide M6C, tungsten carbide Fe3W3C and vanadium carbide V4C3 can be observed, which match the JCPDS (Joint Committee on Powder Diffraction Standards, 2000aStandards, , 2000b) charts 01-087-0721, 01-089-7205 and 00-001-1159, respectively. For the niobium carbide films, the cubic NbC phase is observed with a mixed texture of preferred (111) and (200) orientations although there are also evidence for (220), (311) and (222) (111) orientation (Braic et al, 2011;Zhang et al, 2012). Based on the carbon-niobium binary phase diagram and on the NbC phase obtained, it can be estimated that the carbon content is between 40 and 50%.…”

Section: Resultsmentioning

confidence: 98%

“…The coatings were deposited by sputtering with an unbalanced magnetron. With the aim of reducing the presence of residual stresses in the coatings and to avoid structural alterations by heating of the steel substrate, the deposition of the coating was made at room temperature (Zhang et al, 2012;Zoita et al, 2010).…”

Section: Introduction 1234mentioning

confidence: 99%

See 2 more Smart Citations

Microstructure, morphology, adhesion and tribological behavior of sputtered niobium carbide and bismuth films on tool steel

Ardila¹,

Olaya²,

Arroyo³

2014

ing.inv.

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Microstructure, morphology, adhesion and tribological behavior of sputtered niobium carbide and bismuth films on tool steel

Ardila¹,

Olaya²,

Arroyo³

2014

ing.inv.

View full text Add to dashboard Cite

“…Figure 4a shows the C1s spectra, where two peaks at 284.4 and 282.2 eV can be identified. They are attributed to C-C in a hydrogenated amorphous carbon phase (a-C:H) and C-Nb in a carbide phase (NbC x ), respectively [4,5,29]. The relative amounts of the two phases can then be calculated from the relative peak areas.…”

Section: Microstructure and Composition Of The Coating Bulkmentioning

confidence: 99%

Passive films on nanocomposite carbide coatings for electrical contact applications

et al. 2017

View full text Add to dashboard Cite

Nanocomposite transition metal carbide/amorphous carbon coatings (Me-C/a-C) deposited by magnetron sputtering have excellent electrical contact properties. The contact resistance can be as low as that of noble metal coatings, although it is known to vary by several orders of magnitude depending on the deposition conditions. We have investigated a nanocrystalline niobium carbide/ amorphous carbon (NbC x /a-C:H) model system aiming to clarify factors affecting the contact resistance for this group of contact materials. For the first time, the surface chemistry is systematically studied, by angle-resolved X-ray photoelectron spectroscopy, and in extension how it can explain the contact resistance. The coatings presented a mean oxide thickness of about 1 nm, which could be grown to 8 nm by annealing. Remarkably, the contact resistances covered four orders of magnitude and were found to be exponentially dependent on the mean oxide thickness. Moreover, there is an optimum in the amount of a-C:H phase where the contact resistance drops very significantly and it is thus important to not only consider the mean oxide thickness. To explain the results, a model relying on surface chemistry and contact mechanics is presented. The lowest contact resistance of a nanocomposite matched that of a gold coating at 1 N load (vs. gold), and such performance has previously not been demonstrated for similar nanocomposite materials, highlighting their useful properties for electrical contact applications.

show abstract

“…Figures 3b to 3d show of high-resolution spectra obtained from the C 1s, V 2p, O 1s and Nb 3d spectra recorded from the coatings. The C 1s spectra has three contributions; the first is centered at 284.7 eV, and corresponds to aliphatic carbon [13][14], the second contribution centered at 283.7 eV is the energy corresponding to C-V bond [15] and the third is centered at 282.6 eV, and corresponds to Nb-C bond [16]. V 2p spectrum has peaks centered at 513.1 eV that correspond to the V-C bond; a second peak is centered at 516.1eV which belongs to vanadium pentoxide (VO 5 ) [13][14].…”

Section: Microstructure Of the Carbide Layersmentioning

confidence: 99%

Electrochemical and wear behavior of niobium-vanadium carbide coatings produced on AISI H13 tool steel through thermo-reactive deposition/diffusion

Castillejo

Flórez

Orjuela

2016

Ingeniare. Rev. chil. ing.

View full text Add to dashboard Cite

We deposited of niobium-vanadium carbide coatings on tool steel AISI H13 using the thermo-reactive substrates deposition/diffusion (TRD) technique. The carbides were obtained using salt baths composed of molten borax, ferroniobium, vanadium and aluminum, by heating this mixture at 1020° C for 4 hours. The coatings were characterized morphologically via electron microscopy scanning (SEM), the chemical surface composition was determined through X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDX); the crystal structure was analyzed using x-ray diffraction (XRD), the mechanical properties of the coatings were evaluated using nano-indentation, The tribological properties of the coatings obtained were determined using a Pin-on-disk tribometer and the electrochemical behavior was studied through potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). The results showed that the hardness of the coated steel increased four times with respect to uncoated steel, and the electrochemical test established that the corrosion current is lower by one order of magnitude for coated steel.Keywords: Coatings, thermo reactive, niobium-vanadium carbide, spectroscopy, impedance. RESUMEN En este trabajo se depositaron recubrimientos de carburo de niobio-vanadio sobre aceros para herramientas AISI H13 utilizando la técnica de depósito por difusión termorreactiva (TRD). Los carburos se obtuvieron utilizando baños de sales compuestas de bórax fundido, ferroniobio, vanadio y aluminio, calentando la mezcla a 1020 °C durante 4 horas. Los recubrimientos fueron caracterizados morfológicamente mediante microscopia electrónica de barrido (SEM), la composición química de la superficie se determinó mediante espectroscopia de fotoelectrones de rayos X (XPS) y la espectroscopia de rayos X de energía dispersiva (EDX); la estructura cristalina se analizó utilizando difracción de rayos X (XRD), las propiedades mecánicas de los recubrimientos fueron evaluados utilizando nanoindentación. Las propiedades tribológicas de los recubrimientos obtenidos fueron determinadas usando un tribómetro Pin on Disk CETR-UMC-2 y el comportamiento electroquímico se estudió por medio de curvas de polarización potenciodinámica y espectroscopia de impedancia electroquímica (EIS). Los resultados mostraron que la dureza del acero revestido aumentó cuatro veces respecto del acero no recubierto, y la prueba electroquímica estableció que la corriente de corrosión es inferior en un orden de magnitud para el acero recubierto.Palabras clave: Recubrimientos, termorreactiva, carburo de niobio-vanadio, espectroscopia, impedancia.

show abstract

Effects of substrate bias voltage on the microstructure, mechanical properties and tribological behavior of reactive sputtered niobium carbide films

Cited by 49 publications

References 30 publications

Microstructure, morphology, adhesion and tribological behavior of sputtered niobium carbide and bismuth films on tool steel

Microstructure, morphology, adhesion and tribological behavior of sputtered niobium carbide and bismuth films on tool steel

Passive films on nanocomposite carbide coatings for electrical contact applications

Electrochemical and wear behavior of niobium-vanadium carbide coatings produced on AISI H13 tool steel through thermo-reactive deposition/diffusion

Contact Info

Product

Resources

About