Selective pulsed laser stripping of TiAlN erosion-resistant coatings: Effect of wavelength and pulse duration

Ragusich, Alexis; Taillon, Gabriel; Meunier, Michel; Martinů, L.; Klemberg-Sapieha, Jolanta E.

doi:10.1016/j.surfcoat.2013.06.092

Cited by 21 publications

(13 citation statements)

References 20 publications

(20 reference statements)

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“…Explosive removal of coating followed by evaporation is evident by the absence of material redeposition once the process is completed. 11,[16][17][18][19][20] Latest developments in cutting tool de-coating have led to a renewed interest in de-coating studies. Table 1 presents a summary of the studies that investigated the use of lasers for de-coating various substrate types.…”

Section: Literature Reviews For Laser De-coatingmentioning

confidence: 99%

“…The researchers found the coating adequately removed when Nd:YAG laser at wavelength 1064 nm and 470 J/cm 2 laser fluence was administered. Ragusich et al 18 reported on their attempt to remove 20 μm thick TiAlN coatings with Ti:Sapphire femtosecond laser and KrF excimer laser (GSI Lumonics) from titanium aerospace parts. The authors found the ablation rate dependent on laser wavelength, frequency and pulse range.…”

Section: Literature Reviews For Laser De-coatingmentioning

confidence: 99%

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Laser de-coating of hard DLC coatings from tungsten carbide cutting tool

Hassan

Mativenga

Rajab

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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Laser irradiation de-coating is a promising new approach for effective coating removal of cutting tools. While this method has demonstrated feasibility for conventional coatings, its use and efficacy on lubricant coating is however yet to be ascertained. This paper reports on the results of excimer laser de-coating of hard DLC from DLC-coated tungsten carbide (WC) substrates. A range of fluence and pulse was studied to evaluate the effectiveness of the de-coating process. Result shows that laser parameters of 7 J/cm2 fluence, 400 pulse and 25 Hz frequency were found to yield optimum results in removing hard DLC coating of 3.2 μm thickness from WC substrates. The experimental work indicated successful laser de-coating of hard DLC coating without noticeable damage to the WC substrate. The capability of this new de-coating process is significant in the aerospace industry as it could facilitate re-grinding and recoating of drills thereby improving economics of manufacturing. The process windows could also be applied in the removal of DLC from other cutting tools and applications.

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Section: Literature Reviews For Laser De-coatingmentioning

confidence: 99%

Section: Literature Reviews For Laser De-coatingmentioning

confidence: 99%

Laser de-coating of hard DLC coatings from tungsten carbide cutting tool

Hassan

Mativenga

Rajab

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…This requires the use of tools with very high dimensional accuracy. Cutting foils increases the possibility of tools' wear (Arroyoa et al, 2010;Langer et al, 2012;Ragusich et al, 2013;Deng et al, 2013). Tool wear causes the rollover formation ( Fig.…”

Section: Fig 1 Rollover Formation On Cut Surfacementioning

confidence: 99%

Investigations of Polypropylene Foil Cutting Process Using Fiber Nb: Yag and Diode Nd:YVO4 Lasers

Kukiełka

Patyk

Bohdal

et al. 2019

Acta Mechanica Et Automatica

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Lasers are widely used in a variety of manufacturing processes including: depaneling, drilling, cutting, repair, trimming, micromachining. Polypropylene foils are intensively investigated as materials with great number of potential applications. Laser cutting is a major operation used in forming these materials and preparing the final workpieces. At the moment, the main challenge when cutting polypropylene is to obtain high quality products characterized by optimum sheared edge condition, minimum surface damage, freedom from burrs, slivers, edge wave, distortion, residual stresses and to obtain minimum width of HAZ zone. The amount of adjusTab. process parameters and the fact that the influence of these parameters on the process is not fully understood makes it difficult to control the cutting process. In practice, the right setup for the lasers is mostly found by trial and error combined with experience. Therefore, the final product frequently has serious defects. The paper presents the possibility of using fiber and diode lasers for forming of workpieces from polypropylene multilayer foil using cutting technology. The effect of selected process parameters and conditions on quality of sheared edge and material degradation is discussed.

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“…In Ragusich et al [28], to peel off the 20 µm thick TiAlN corrosion-resistant coating on the surface of aerospace titanium alloy parts, the TiAlN coating on the Ti6Al4V substrate was laser cleaned. Although TiAlN coatings have a better performance than TiN coatings in wear resistance, TiN coatings have significant advantages in erosion resistance [29].…”

Section: Introductionmentioning

confidence: 99%

Research on Cleaning Mechanism of Anti-Erosion Coating Based on Thermal and Force Effects of Laser Shock

Chen

et al. 2020

Coatings

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TiN coating plays a positive role in improving the abrasion resistance and impact resistance of aero-engines in sand and dust environments. However, little research has been done on the laser cleaning of TiN coatings that failed on aircraft engines. In this paper, TiN coatings are deposited on Ti6Al4V alloys by magnetic filtered cathodic vacuum arc (MFCVA). The TiN coating was laser cleaned with different parameters. By analyzing coating morphology, surface composition and sample profile, the research reveals the morphological change of the TiN coating after cleaning and the laser cleaning mechanism. The results show that for TiN–Ti6Al4V structure, when the laser average power density is 2.54 × 103 W/cm2, the cleaning mechanism of the coating is thermal expansion; The laser average power density is increased to 5.08 × 103 W/cm2, the cleaning mechanism is thermal expansion, accompanied by the thermal melting of the substrate, a small amount of molten substrate overflows from the crack. When the laser average power density is 5.08 × 103 W/cm2 and the number of cleanings doubles, the cleaning direction is perpendicular to each other, the cleaning mechanism is thermal expansion and thermal melting, both the substrate and the coating are melted, and the cleaning is obviously effective.

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Selective pulsed laser stripping of TiAlN erosion-resistant coatings: Effect of wavelength and pulse duration

Cited by 21 publications

References 20 publications

Laser de-coating of hard DLC coatings from tungsten carbide cutting tool

Laser de-coating of hard DLC coatings from tungsten carbide cutting tool

Investigations of Polypropylene Foil Cutting Process Using Fiber Nb: Yag and Diode Nd:YVO4 Lasers

Research on Cleaning Mechanism of Anti-Erosion Coating Based on Thermal and Force Effects of Laser Shock

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