Publicou 4 edições por ano
ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360
Indexed in
EFFECT OF THE IN-FLIGHT BEHAVIOR OF PARTICLES ON THE AMORPHOUS CONTENT OF METALLIC COATINGS UNDER THERMAL SPRAY CONDITIONS
RESUMO
Amorphous metal alloys in the form of bulk materials or coatings exhibit generally high mechanical properties and high wear and corrosion resistance. Therefore, they have generated significant interest over the last three decades. Thermal spray processes that are characterized by rather high cooling rates (≈ 106 K/s) could be a possible route for the manufacturing of thick coatings (up to 1-2 mm) of glassy metal alloys and the first commercial product was developed in 1984. However, most of the amorphous thermal-spray coatings have a significant content of crystalline phase. The objective of this study is to investigate the relationship between the characteristics of particles (i.e. temperature, velocity and size) at impact and the degree of amorphisation of the as-sprayed coatings. Two thermal spray techniques (i.e. plasma and wire-arc) are used in order to get a large range of particle parameters and different heating histories before impact on the substrate.
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Jakab M. A., Scully J. R., On-demand release of corrosion-inhibiting ions from amorphous Al–Co–Ce alloys, Nature Materials, 4, 9, 2005. Crossref