Surface and Cross - Sectional Micro - Scratch Characterization of Cold - Sprayed SS316L Coatings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F25%3A10002463" target="_blank" >RIV/47718684:_____/25:10002463 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s11666-025-02029-w" target="_blank" >https://link.springer.com/article/10.1007/s11666-025-02029-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11666-025-02029-w" target="_blank" >10.1007/s11666-025-02029-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface and Cross - Sectional Micro - Scratch Characterization of Cold - Sprayed SS316L Coatings

Popis výsledku v původním jazyce

This study presents a scratch test-based framework for evaluating interfacial adhesion, inter-splat cohesion, and fracture toughness of cold-sprayed SS316L coatings on SS304 substrates, representing the first such application for this coating system. To systematically investigate the influence of process parameters on microstructure and mechanical performance, coatings were deposited at four traverse speeds (20, 100, 250, and 400 mm/s). Among these, the coating produced at 250 mm/s demonstrated the lowest porosity (0.14%) compared to porosities of 0.2, 2.04, and 2.04% at 20, 100, and 400 mm/s, respectively. Notably, this coating also achieved the highest fracture toughness (28 ± 4 MPa-m0.5, as determined by Zhang’s model), closely approaching the bulk SS316L value (34 MPa-m0.5). Superior inter-splat cohesion was evidenced by the smallest projected cone area (0.12 mm2) at the scratch indenter tip, with no splat debonding or cracks observed under progressive loading. Furthermore, exceptional interfacial adhesion was demonstrated, as coatings deposited at 250 and 400 mm/s exhibited no interface failure even at maximum applied loads (50 N). These findings establish scratch testing as a reliable quantitative tool for assessing fracture toughness in cold-sprayed coatings. Additionally, an intermediate traverse speed is identified as optimal for achieving the best combination of fracture toughness, inter-splat cohesion, and interfacial adhesion.

Název v anglickém jazyce

Surface and Cross - Sectional Micro - Scratch Characterization of Cold - Sprayed SS316L Coatings

Popis výsledku anglicky

This study presents a scratch test-based framework for evaluating interfacial adhesion, inter-splat cohesion, and fracture toughness of cold-sprayed SS316L coatings on SS304 substrates, representing the first such application for this coating system. To systematically investigate the influence of process parameters on microstructure and mechanical performance, coatings were deposited at four traverse speeds (20, 100, 250, and 400 mm/s). Among these, the coating produced at 250 mm/s demonstrated the lowest porosity (0.14%) compared to porosities of 0.2, 2.04, and 2.04% at 20, 100, and 400 mm/s, respectively. Notably, this coating also achieved the highest fracture toughness (28 ± 4 MPa-m0.5, as determined by Zhang’s model), closely approaching the bulk SS316L value (34 MPa-m0.5). Superior inter-splat cohesion was evidenced by the smallest projected cone area (0.12 mm2) at the scratch indenter tip, with no splat debonding or cracks observed under progressive loading. Furthermore, exceptional interfacial adhesion was demonstrated, as coatings deposited at 250 and 400 mm/s exhibited no interface failure even at maximum applied loads (50 N). These findings establish scratch testing as a reliable quantitative tool for assessing fracture toughness in cold-sprayed coatings. Additionally, an intermediate traverse speed is identified as optimal for achieving the best combination of fracture toughness, inter-splat cohesion, and interfacial adhesion.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/EH23_021%2F0008594" target="_blank" >EH23_021/0008594: Evropská laboratoř aplikovaného výzkumu aditivních technologií žárového nástřiku</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Spray Technology

ISSN

1059-9630

e-ISSN

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Svazek periodika

neuveden

Číslo periodika v rámci svazku

10 July 2025

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

15

Strana od-do

nestránkováno

Kód UT WoS článku

001527707500001

EID výsledku v databázi Scopus

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