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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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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

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OECD FORD branch

20506 - Coating and films

Project

<a href="/en/project/EH23_021%2F0008594" target="_blank" >EH23_021/0008594: European Laboratory for Applied Research on Additive Spraying Technologies</a><br>

Continuities

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

Publication year

2025

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

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Volume of the periodical

neuveden

Issue of the periodical within the volume

10 July 2025

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

nestránkováno

UT code for WoS article

001527707500001

EID of the result in the Scopus database

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