Performance of W–TI-(N) coated pins in lubricated pin-on-disk tests

Silva, P.N.; Dias, João Paulo; Cavaleiro, A.

doi:10.1016/j.surfcoat.2007.09.039

Cited by 10 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The chemical composition of the coatings produced in the laboratory equipment was extensively reported previously by Cavaleiro et al (2003) and Silva et al (2005Silva et al ( , 2008. Films with N content from 0 up to 55 at.% were deposited.…”

Section: Chemical Composition and Structurementioning

confidence: 99%

“…Recently, Silva et al (2008) tested the tribological behaviour of these coatings by pin-on-disk in dry and lubricated conditions. In both cases, the best wear and friction results were obtained for the coatings with the highest hardness, reason why they were selected for semi-industrial in-service tests, in spite of their lower scratchtest critical loads.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…The chemical, physical and mechanical properties of the coatings were evaluated which made possible to select the Ti content for getting the best results: 20 wt.% Ti. By using the W + 20 wt.% Ti target they carried out a further detailed study involving the tribological behaviour of the coatings in dry and lubricated conditions (Silva et al, 2008). This study was carried out in the aim of the European project ECOSTAMP (2001).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tribological behaviour of W–Ti–N coatings in semi-industrial strip-drawing tests

Severo¹,

Vilhena

Silva

et al. 2009

Journal of Materials Processing Technology

Self Cite

View full text Add to dashboard Cite

a b s t r a c t W-Ti-N sputtered coatings were tested in semi-industrial conditions by strip drawing to access their ability for sheet metal forming. Both laboratory and industrially developed coatings were tested. In a first part of the study the upscale of the deposition of the W-Ti-N coatings was achieved. The main difference between the two types of coatings was the evolution of the chemical composition with the N content. However, similar trends in the hardness and scratch-test results were encountered being the best compromise of these properties reached for ∼40 at.% N in the industrially deposited films against the 35 at.% N for laboratory deposited ones.Excellent results were found in the strip-drawing tests for coated samples in comparison with uncoated tools. In any of the conditions tested no adhesion between the tool and the sheet material was found when 1 g m −2 of lubricant was used. Similar results were found between laboratory and industrially deposited coatings.

show abstract

Section: Chemical Composition and Structurementioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tribological behaviour of W–Ti–N coatings in semi-industrial strip-drawing tests

Severo¹,

Vilhena

Silva

et al. 2009

Journal of Materials Processing Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…COF values even lower than those reported in the literature were obtained. For example, Silva and his collaborators [35] obtained COF values in the range of 0.45 to 0.6, reaching even lower values of μ with steel. The presence of solid lubricants, such as oxides and porosities, in the compounds could be responsible for the observed decrease in the coefficient of friction for this material throughout the test.…”

Section: Resultsmentioning

confidence: 99%

Study of Adhesive Wear Test on TiSi, AlTi, and WTi Coatings

et al. 2022

View full text Add to dashboard Cite

Coatings based on Ti, Si, W, and Al synthesized by different techniques have been investigated in order to better understand their properties; however, there are few results related to their wear behavior. In this paper, TiSi, AlTi, and WTi coatings were applied by means of a sputtering system on 316L stainless steel substrates in order to evaluate their behavior through a ball-on-disc wear test. Adhesive wear tests were carried out using the ball-on-disc technique, which allowed the coefficient of friction to be measured. The morphological characterization was based on an analysis of the SEM images and on the optical profilometry of the wear traces of the coatings, used to calculate the wear rate. An analysis of the wear products was carried out based on information provided by the SEM-EDS, Raman spectroscopy, and XPS techniques, which provided information about the tribo-chemical behavior of the coatings subjected to the ball-on-disc test. The morphological analysis showed that the TiSi and AlTi coatings exhibited premature failure, which was corroborated by means of the coefficient of friction curves. It was also observed that the WTi coating exhibited better behavior against the wear test, with a coefficient of friction lower than that of the stainless-steel substrate, without showing evidence of premature failure, which can be explained as a consequence of the tribo-chemical behavior of the WxOy produced in the coating.

show abstract

“…It is reported that W Considering the wide use of W-Ti thin films, it is necessary to study the W-Ti alloys in depth. However, at present, most of published studies in the literature ( Ref 11,12) are focused on the properties of W-Ti thin films and there is scant information on the processing and properties of W-Ti alloy by hot press sintering of ball-milled powders. In the present investigation, microhardness of W-rich phase, electrical resistivity and impurity (C, O) contents of W-10Ti alloys were measured, and it was found that W-rich precipitates can form in the Ti-rich regions.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Sintering Temperature on Mechanical and Electrical Properties of a W-10Ti Alloy Prepared by Hot Press Sintering

Xian-zhuo

Wang

Zhao

et al. 2011

J. of Materi Eng and Perform

View full text Add to dashboard Cite

W-10Ti alloy was prepared by hot press sintering using W-TiH 2 powders milled for 24 h under argon atmosphere. The effect of sintering temperature on the phase constituents and the microstructure of the alloys was characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The microhardness of W-rich phase, electrical resistivity and impurity (C, O) contents of W-10Ti alloy were determined. The results show that the amount of W-Ti solid solution, the microhardness of the W-rich solid solution and the resistance of W-10Ti alloy increase with an increase of sintering temperature. At 1300°C, W-10Ti alloy has the maximum microhardness value of 333 HV 0.05 , the O content of 360 ppm and C content of 200 ppm.

show abstract

Performance of W–TI-(N) coated pins in lubricated pin-on-disk tests

Cited by 10 publications

References 13 publications

Tribological behaviour of W–Ti–N coatings in semi-industrial strip-drawing tests

Tribological behaviour of W–Ti–N coatings in semi-industrial strip-drawing tests

Study of Adhesive Wear Test on TiSi, AlTi, and WTi Coatings

The Effect of Sintering Temperature on Mechanical and Electrical Properties of a W-10Ti Alloy Prepared by Hot Press Sintering

Contact Info

Product

Resources

About