Wear performance of laser precoating treated cemented carbide milling tools

Arroyo, José Manuel; Diniz, Anselmo Eduardo; Lima, Milton Sérgio Fernandes de

doi:10.1016/j.wear.2010.02.009

Cited by 24 publications

(13 citation statements)

References 21 publications

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“…The percentages of 50, 75, and 95% corresponded to the treated percentage relative to the previous laser pulse. 18 Characterization X-ray diffraction (XRD) analysis of the powder samples was conducted on a Rigaku Geigerflex D/Max-C diffractometer working with monochromator CuK radiation (λ = 1.5405 Å) at room temperature. Diffractograms were recorded in the 2θ range of 5 to 75°, at a resolution of 0.04°.…”

Section: Laser Treatmentmentioning

confidence: 99%

“…Laser has been employed to clean surfaces 16 prepared by ablation because it allows metallic material to be precisely removed without thermally damaging the adjacent regions. 17,18 Laser can also be used to form channels (printed circuits) with different shapes, sizes, lengths, depths, and spacing for specific applications like nanoconductors and waveguides, for instance.…”

Section: Introductionmentioning

confidence: 99%

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ITO Obtained by Spray Pyrolysis and Coating on Glass Substrate

Campos¹,

Freiria²,

Ciuffi³

et al. 2017

J. Braz. Chem. Soc.

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Conductive thin films have various applications in different technological fields. Indium tin oxide (ITO) is a mixed oxide. In the film form, ITO has been widely employed as electrode in many optoelectronic devices. Methods like thermal evaporation, sputtering, chemical vapor deposition (CVD), electron beam, spray coating, and sol-gel synthesis give ITO thin films. In this work, we prepared ITO thin films by dip coating of a glass substrate into ITO obtained by spray pyrolysis. ITO consisted of spherical particles with different diameters. The ITO thin films were treated with laser. X-ray diffraction (XRD) analysis confirmed that spray pyrolysis produced spherical ITO particles. Transmittance analyses revealed the production of transparent films with thickness ranging from 0.800 to 1.200 μm. The four-wire test showed that the porosity of the films led to low conductivity. Film resistance was a function of the number of layers of ITO thin film.

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Section: Laser Treatmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

ITO Obtained by Spray Pyrolysis and Coating on Glass Substrate

Campos¹,

Freiria²,

Ciuffi³

et al. 2017

J. Braz. Chem. Soc.

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“…Former investigations have shown that residual stresses in carbides are limited to a small subsurface of about 10 lm thickness [6]. It is also known that for the prevention of cohesive damage of PVD-coated tools a certain amount of compressive residual stress in the substrate subsurface must not be underrun [11].…”

Section: Residual Stress Depth Distributionmentioning

confidence: 99%

“…Laser machining as pre-coating process may increase the strength of coating adhesion, and as a result mainly cohesive tool failures appear [5]. If lasers with less pulse frequencies are applied (ns-range), after coating no significant difference in tool performance compared to sandblasted tools was detected [6].…”

Section: Introductionmentioning

confidence: 99%

Surface integrity of laser machined carbide cutting tools within the PVD‐coating process chain

Breidenstein¹,

Gey²,

Denkena³

2013

Materialwissenschaft Werkst

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The final state of PVD-coated carbide cutting tools is a result of a series of manufacturing steps within a process chain. When laser machining is applied instead of conventional mechanical abrasive processes for the creation of tool micro geometries, an alteration of this process chain takes place. The consequences of laser machining on surface integrity of carbide tools is investigated, as well as the influence of the subsequent process steps up to and including PVD-coating on the laser machined surface.Keywords: carbide tools / laser machining / surface integrity / process chain / Die Eigenschaften PVD-beschichteter Hartmetall-Zerspanwerkzeuge resultieren aus einer Über-lagerung verschiedener Schritte innerhalb der Prozesskette ihrer Fertigung. Wird statt der übli-chen abrasiven Bearbeitung ein Laserabtragsverfahren eingesetzt, um Werkzeugmikrogeometrien zu erzeugen, findet dadurch eine ¾nderung der Prozesskette statt. Auswirkungen der Laserbearbeitung auf die Randzoneneigenschaften der Hartmetallwerkzeuge wurden untersucht, sowie der Einfluss nachfolgender Prozessschritte auf die laserbearbeitete Oberfläche, einschließ-lich der PVD-Beschichtung.

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“…The wear resistance of carbon steel parts can be improved by protecting the sliding surfaces with magnetic sputtering technique, laser treatment, chemical heat treatment and thermal spray coatings . Chromium nitride (CrN) coatings are well known to the tooling and forming industries due to their low friction, high thermal stability, low deposition temperatures, high hardness, good wear resistance and high corrosion resistance properties .…”

Section: Introductionmentioning

confidence: 99%

Tribological properties of non‐ferrous coating lubricated with rapeseed oil containing lubricant additives

Feng

Xia

2012

Lubrication Science

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With the increasing requirements of environmental protection, using lead, hexavalent chromium and other heavy metals will be prohibited in different surface coatings. In this paper, the non‐ferrous CrN coatings and the rapeseed oil were chosen as friction pair and biodegradable lubricant. The tribology properties were investigated using SRV‐IV reciprocating friction wear test. The worn surface of CrN coatings was observed and analysed using scanning electron microscopy and X‐ray photoelectron spectroscopy. The results indicate that the rapeseed oil containing 1 wt.% MoZn (MoDTC (molybdenum dithiocarbamate) + ZnDTP (zinc dithiophosphate) (1 : 3)) exhibits better friction‐reducing properties than the rapeseed oil containing 1 wt.% PN (an amine salt of an alkoxylphosphate) additives, whereas the rapeseed oil containing 1 wt.% PN additive exhibits better wear resistance properties than the rapeseed oil containing 1 wt.% MoZn additives. This is partly attributed to the tribophysical and tribochemical reactions between the lubricant and the CrN coating sliding surfaces. Copyright © 2012 John Wiley & Sons, Ltd.

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Wear performance of laser precoating treated cemented carbide milling tools

Cited by 24 publications

References 21 publications

ITO Obtained by Spray Pyrolysis and Coating on Glass Substrate

ITO Obtained by Spray Pyrolysis and Coating on Glass Substrate

Surface integrity of laser machined carbide cutting tools within the PVD‐coating process chain

Tribological properties of non‐ferrous coating lubricated with rapeseed oil containing lubricant additives

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