The Role of Laser Texturing in Improving the Adhesion of Plasma Sprayed Tungsten Coatings

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00517259" target="_blank" >RIV/61389021:_____/19:00517259 - isvavai.cz</a>

Alternative codes found

RIV/49777513:23640/19:43956504

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs11666-019-00924-7" target="_blank" >https://link.springer.com/article/10.1007%2Fs11666-019-00924-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11666-019-00924-7" target="_blank" >10.1007/s11666-019-00924-7</a>

Result language

angličtina

Original language name

The Role of Laser Texturing in Improving the Adhesion of Plasma Sprayed Tungsten Coatings

Original language description

Plasma sprayed W-based coatings have the potential application as joining interlayers for the plasma-facing components of future fusion reactors. Particularly in the form of tungsten-steel functionally graded materials (FGMs), they would reduce the stress concentration between the W-based plasma-facing armor and steel-based construction. For mechanical integrity, good adhesion is essential. For this, conventional grit blasting treatment of the substrate may not be sufficient. Therefore, alternative treatments capable of reaching significantly higher roughness without damaging the substrate are sought. In this study, the effects of laser texturing on the adhesion of plasma sprayed W and W-steel FGMs on W and steel substrates are investigated. A variety of surface profiles were achieved by controlled laser ablation in several types of patterns. Their geometric features were systematically varied and measured, and the extent of their filling by the coating material was evaluated. On the most promising patterns, coating adhesion tests were performed in shear loading mode and the best performing patterns were identified. Significant improvement over grit-blasted surface was obtained on patterned surfaces with a high effective contact area, promoting mechanical interlocking. On steel substrates, generally higher adhesion was observed, surpassing already the coating cohesive strength - this is attributed to a combination of mechanical interlocking and metallurgical bonding.

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

20501 - Materials engineering

Project

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Journal of Thermal Spray Technology

ISSN

1059-9630

e-ISSN

—

Volume of the periodical

28

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

17

Pages from-to

1346-1362

UT code for WoS article

000498221200001

EID of the result in the Scopus database

2-s2.0-85074257174