The effects of CO2 laser and thulium-doped fibre laser scribing on magnetic domains structure, coercivity, and nanohardness of Fe-3.2Si grain-oriented electrical steel sheets

Kód výsledku v IS VaVaI

RIV/67985882:_____/18:00499971 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.4149/km_2018_6_389

DOI - Digital Object Identifier

10.4149/km_2018_6_389

Jazyk výsledku

angličtina

Název v původním jazyce

The effects of CO2 laser and thulium-doped fibre laser scribing on magnetic domains structure, coercivity, and nanohardness of Fe-3.2Si grain-oriented electrical steel sheets

Popis výsledku v původním jazyce

Two different laser sources, namely the CO2 laser and continuous-wave thulium-doped fibre laser were individually used to study their effects on the resulting changes in magnetic domains structure, coercivity, and nanohardness of Fe-3.2Si grain-oriented electrical steel sheets. The CO2 laser with a constant power of 30 W, constant frequency of 1 kHz and variable scribing speed in the range of 10-50 mm s(-1) was used to perform the first series of five different laser scribing treatments. Separately, the second series of next five laser scribing treatments was performed using thulium-doped fibre laser operating at a constant scribing speed of 2.4 mm s(-1) and variable laser power in the range of 2-10 W. The results showed that compared to the laser untreated material with a coercivity of 0.21 A m(-1), distinguishable improvements in soft magnetic characteristics (i.e., coercivity reduction) were obtained after the all laser treatments used. At the same time, lowered nanohardness values were indicated in central parts of laser scribed areas. The major effects responsible for the observed coercivity improvements are related to optimal refinement of magnetic domains structures by applied laser treatments

Název v anglickém jazyce

The effects of CO2 laser and thulium-doped fibre laser scribing on magnetic domains structure, coercivity, and nanohardness of Fe-3.2Si grain-oriented electrical steel sheets

Popis výsledku anglicky

Two different laser sources, namely the CO2 laser and continuous-wave thulium-doped fibre laser were individually used to study their effects on the resulting changes in magnetic domains structure, coercivity, and nanohardness of Fe-3.2Si grain-oriented electrical steel sheets. The CO2 laser with a constant power of 30 W, constant frequency of 1 kHz and variable scribing speed in the range of 10-50 mm s(-1) was used to perform the first series of five different laser scribing treatments. Separately, the second series of next five laser scribing treatments was performed using thulium-doped fibre laser operating at a constant scribing speed of 2.4 mm s(-1) and variable laser power in the range of 2-10 W. The results showed that compared to the laser untreated material with a coercivity of 0.21 A m(-1), distinguishable improvements in soft magnetic characteristics (i.e., coercivity reduction) were obtained after the all laser treatments used. At the same time, lowered nanohardness values were indicated in central parts of laser scribed areas. The major effects responsible for the observed coercivity improvements are related to optimal refinement of magnetic domains structures by applied laser treatments

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Kovové materiály

ISSN

0023-432X

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

7

Strana od-do

389-395

Kód UT WoS článku

000454568700005

EID výsledku v databázi Scopus

2-s2.0-85057729453