Experimental Investigation of a Method for Selective and Precise Laser De-Coating

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00364179" target="_blank" >RIV/68407700:21220/23:00364179 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s40516-023-00202-z" target="_blank" >https://doi.org/10.1007/s40516-023-00202-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s40516-023-00202-z" target="_blank" >10.1007/s40516-023-00202-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Investigation of a Method for Selective and Precise Laser De-Coating

Popis výsledku v původním jazyce

Coatings are used in many industrial applications as a protective barrier, improving component properties such as friction, wear resistance, and thermal resistivity. When components become worn, any coatings must be thoroughly removed before performing repairs. Laser stripping is a relatively new technology developed for the entire coating removal. So far, only laser stripping of the entire coatings has been discussed in literature, but its application in selective de-coating layer by layercan extend the usage of this technique. Herein, we describe a new method of selective and precise laser de-coating layer by layer in layer thickness lower than 0,15 μm and demonstrate tise technique on two coatings, namely AlTiN and diamond-like carbon. This method is based on ablation threshold measurement and the application of low laser beam fluences for selective de-coating, layer by layer, in a defined pattern. Then the average minimal removals per layer were estimated for both coatings using first and second harmonic wavelengths. Finally, the usage of this method was proved by chemical analysis of the de-coated areas. The presented method can extend the use of laser coating stripping from actual removal of whole coatings to new areas, for example thickness measurement or inter-layer inspection of coatings.

Název v anglickém jazyce

Experimental Investigation of a Method for Selective and Precise Laser De-Coating

Popis výsledku anglicky

Coatings are used in many industrial applications as a protective barrier, improving component properties such as friction, wear resistance, and thermal resistivity. When components become worn, any coatings must be thoroughly removed before performing repairs. Laser stripping is a relatively new technology developed for the entire coating removal. So far, only laser stripping of the entire coatings has been discussed in literature, but its application in selective de-coating layer by layercan extend the usage of this technique. Herein, we describe a new method of selective and precise laser de-coating layer by layer in layer thickness lower than 0,15 μm and demonstrate tise technique on two coatings, namely AlTiN and diamond-like carbon. This method is based on ablation threshold measurement and the application of low laser beam fluences for selective de-coating, layer by layer, in a defined pattern. Then the average minimal removals per layer were estimated for both coatings using first and second harmonic wavelengths. Finally, the usage of this method was proved by chemical analysis of the de-coated areas. The presented method can extend the use of laser coating stripping from actual removal of whole coatings to new areas, for example thickness measurement or inter-layer inspection of coatings.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Nové nanostruktury pro inženýrské aplikace umožněné kombinací moderních technologií a pokročilých simulací</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Lasers in Manufacturing and Materials Processing

ISSN

2196-7229

e-ISSN

2196-7237

Svazek periodika

10

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

205-224

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85147990628