Nanocrystalline electrodeposited Fe-W/Al 2 O 3 Composites: Effect of Alumina Sub-microparticles on the Mechanical, Tribological, and Corrosion Properties
Închide
Conţinutul numărului revistei
Articolul precedent
Articolul urmator
781 0
SM ISO690:2012
NICOLENCO, Aliona, MULONE, A., IMAZ, Naroa, TSYNTSARU, Natalia, SORT, Jordi Julia, PELLICER, Eva, KLEMENT, Uta, CESIULIS, Henrikas, GARCIA-LECINA, Eva. Nanocrystalline electrodeposited Fe-W/Al 2 O 3 Composites: Effect of Alumina Sub-microparticles on the Mechanical, Tribological, and Corrosion Properties. In: Frontiers in Chemistry, 2019, nr. 7, p. 0. ISSN 2296-2646. DOI: https://doi.org/10.3389/fchem.2019.00241
EXPORT metadate:
Google Scholar
Crossref
CERIF

DataCite
Dublin Core
Frontiers in Chemistry
Numărul 7 / 2019 / ISSN 2296-2646

Nanocrystalline electrodeposited Fe-W/Al 2 O 3 Composites: Effect of Alumina Sub-microparticles on the Mechanical, Tribological, and Corrosion Properties

DOI: https://doi.org/10.3389/fchem.2019.00241

Pag. 0-0

Nicolenco Aliona12, Mulone A.3, Imaz Naroa4, Tsyntsaru Natalia12, Sort Jordi Julia56, Pellicer Eva6, Klement Uta3, Cesiulis Henrikas1, Garcia-Lecina Eva4
 
1 Vilnius University,
2 Institute of Applied Physics,
3 Chalmers Univesity of Technology,
4 Centro de Investigacion Tecnológica En Electroquimica,
5 University of Barcelona,
6 Institució Catalana de Recerca i Estudis Avançats (ICREA)
 
Disponibil în IBN: 2 mai 2019


Rezumat

In this study, nanocrystalline Fe-W alloy and Fe-W/Al 2 O 3 composite coatings with various contents of sub-microsized alumina particles have been obtained by electrodeposition from an environmentally friendly Fe(III)-based electrolyte with the aim to produce a novel corrosion and wear resistant material. The increase in volume fraction of Al 2 O 3 in deposits from 2 to 12% leads to the grain refinement effect, so that the structure of the coatings change from nanocrystalline to amorphous-like with grain sizes below 20 nm. Nevertheless, the addition of particles to the Fe-W matrix does not prevent the development of a columnar structure revealed for all the types of studied coatings. The observed reduction in both hardness and elastic modulus of the Fe-W/Al 2 O 3 composites is attributed to the apparent grain size refinement/amorphization and the nanoporosity surrounding the embedded Al 2 O 3 particles. In the presence of 12 vol% of Al 2 O 3 in deposits, the wear rate decreases by a factor of 10 as compared to Fe-W alloy tested under dry friction conditions due to the lowering of tribo-oxidation. The addition of alumina particles slightly increases the corrosion resistance of the coatings; however, the corrosion in neutral chloride solution occurs through the preferential dissolution of Fe from the matrix. The obtained results provide a possibility to integrate the nanocrystalline Fe-W/Al 2 O 3 composite coatings into various systems working under dry friction conditions, for example, in high-temperature vacuum systems.

Cuvinte-cheie
Alumina, Columnar growth, Composite coatings, Iron alloys, wear resistance