Investigation of Multiparameter Laser Stripping of AlTiN and DLC C Coatings

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00347320" target="_blank" >RIV/68407700:21220/21:00347320 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/ma14040951" target="_blank" >https://doi.org/10.3390/ma14040951</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma14040951" target="_blank" >10.3390/ma14040951</a>

Result language

angličtina

Original language name

Investigation of Multiparameter Laser Stripping of AlTiN and DLC C Coatings

Original language description

The lifetime and properties of cutting tools and forming moulds can be prolonged and enhanced by the deposition of hard, thin coatings. After a certain period of usage, the coating will deteriorate. Any remaining coating must be removed prior to successful recoating. Laser stripping is a fast and environmentally friendly coating removal method. In this paper, we present laser removal of two types of coatings deposited on a 1.2379 tool steel substrate, namely, an AlTiN coating with high hardness and a DLC C coating with a small coefficient of friction (COF). A powerful nanosecond laser was employed to remove the coating from the substrate with high efficiency, along with suitable residual surface roughness. Measurements were taken of surface roughness, removed depth, and working time on a stripped area of 1 cm2. The samples were evaluated under a microscope, with a 3D profilometer, and by EDS chemical analysis. Successful removal of the coating was confirmed by optical analysis, but detailed chemical characterisation showed that about 30% of the coating element may remain on the surface. Moreover, a working time of less than 7.5 s per cm2 was obtained in this study. In addition, it was shown that the application of a second low energy, high frequency laser beam pass leads to remelting of the peaks of the material and reduced surface roughness.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

<a href="/en/project/EF16_026%2F0008396" target="_blank" >EF16_026/0008396: Novel nanostructures for engineering applications enabled by emerging techniques supported by advanced simulations</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Volume of the periodical

14

Issue of the periodical within the volume

4

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

1-16

UT code for WoS article

000624103100001

EID of the result in the Scopus database

2-s2.0-85101551143