2016
DOI: 10.5604/01.3001.0010.6912
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PRACTICAL USE OF THE SURFACE LAYERS OF LASER MODIFIED WC-Cu COATINGS

Abstract: The article presents the study of the effect of laser treatment on the microhardness of WC-Cu coatings applied by electro spark deposition. Observations of friction resistance test results allowed the evaluation of the coatings after laser treatment. The studies were conducted using WC-Cu electrodes, produced by sintering of nanostructural powders. The anti-wear coatings were electro-spark deposited over C45 carbon steel by means of EIL-8A, while the laser processing was performed by electro coats applied usin… Show more

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“…Selfhardening aluminum alloys have high mechanical properties without needs of heat treatment, because these materials are subjected to a natural ageing phenomenon at room temperature after casting for a storage period of about 7-10 days (Rosso et al, 2013;2014;Peter et al, 2014;Tillová et al, 2017) and achieve the desired properties for application in different industrial fields. However, sometimes a request for reduce wear, better mechanical, fatigue properties and corrosion resistance of self-hardening aluminum is, that alloys are exposed to surface treatment (Tillová et al, 2017;Montealegre et al, 2010;Pliszka et al, 2016;Radek, 2008;Bergant et al, 2016;Spadaro et al, 2007). One of the surface treatment possibility is laser surface heating = laser hardening ( Fig.…”
Section: Introductionmentioning
confidence: 99%
“…Selfhardening aluminum alloys have high mechanical properties without needs of heat treatment, because these materials are subjected to a natural ageing phenomenon at room temperature after casting for a storage period of about 7-10 days (Rosso et al, 2013;2014;Peter et al, 2014;Tillová et al, 2017) and achieve the desired properties for application in different industrial fields. However, sometimes a request for reduce wear, better mechanical, fatigue properties and corrosion resistance of self-hardening aluminum is, that alloys are exposed to surface treatment (Tillová et al, 2017;Montealegre et al, 2010;Pliszka et al, 2016;Radek, 2008;Bergant et al, 2016;Spadaro et al, 2007). One of the surface treatment possibility is laser surface heating = laser hardening ( Fig.…”
Section: Introductionmentioning
confidence: 99%