INFLUENCE OF INITIAL SURFACE STATE ON LASER SURFACE TEXTURING RESULT

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F16%3A43930897" target="_blank" >RIV/49777513:23640/16:43930897 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

INFLUENCE OF INITIAL SURFACE STATE ON LASER SURFACE TEXTURING RESULT

Original language description

Laser surface texturing (LST) is one of the methods for obtaining surfaces with specific properties. In this paper the influence of initial surface state of sliding bearing steel on laser texturing of this material was studied. Initial surface with roughness R_a = 0.13 ?m was used for providing shifted laser surface texturing (sLST) by ultrashort laser pulses. On initial "rough" surface laser formation of above-surface-growth (ASG) structures was found. Morphology and chemical composition of the ASG structures were analysed by SEM with EDX spectrometer in comparison with initial surface. Two ways of regression of ASG structures were investigated - fine mechanical repolishing of surface for R_a = 0.01 ?m and optimisation of laser processing parameters. It was found that the most suitable method of ASG structures regression is optimisation of laser processing parameters in comparison with mechanical repolishing. Regression of ASG structures formation by optimisation of laser processing parameters was provided by application higher laser fluence. Temperature field distribution for different laser processing parameters is determined from semi-planar thermal model. Heat accumulation effect is evaluated for both - sLST by simple pulses and burst mode. Advantages and disadvantages ofpresented methods for regression of ASG structures formation were discussed with theoretical background. Presentedresults improve understanding of physical principles of ASG structures formation and the ways for their regression.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

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

Article name in the collection

METAL 2016-25th Anniversary International Conference on Metallurgy and Materials

ISBN

978-80-87294-67-3

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

910-915

Publisher name

Tanger Ltd.

Place of publication

Ostrava

Event location

Brno

Event date

May 25, 2016

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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