Influence of gas detonation spraying conditions on the quality of Fe-Al intermetallic protective coatings

• Autorzy: Senderowski C. , Bojar Z. , Przetakiewicz W.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to present generalized research results and analyses of the quality of coatings produced with self decomposing Fe-Al intermetallic powders deposited on 1045 steel in the gas detonation spraying (GDS). A number of GDS experiments has been carried out with significantly changed operational spraying parameters (the volume of the fuel gas, carrier gas, distance and the frequency of spraying) which define the process energy level directly influencing the quality of the coating. On the basis of the initial results the choice of the process parameters has been made to obtain the most advantageous set of geometrical and physical-mechanical properties of the coating material and substrate. The quality of the coatings was considered by taking into account the grain morphology, chemical content, phase inhomogeneity, cohesive porosity, as well as adhesive porosity in the substrate coating joint. The coating roughness was also considered. It was found that all GDS coatings produced are built with lamellar splats which result from the GDS process transformed (changed plasticity and geometry) powder particles forming the deposit. The result of the GDS spraying parameters optimization is the lack of signs of melting of the material (even in microareas) while the geometry of the deposited grains is considerably changed. This phenomenon has been considered as a proof of high plasticity of the GDS formed Fe-Al intermetallic coatings.

Słowa kluczowe

EN

gas detonation spraying (GDS); protective coatings; FeAl intermetallics coatings

PL

metoda detonacyjna; powłoka ochronna; powłoka międzymetaliczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 1
• Strony: 147--152
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Senderowski C.

autor

Bojar Z.

autor

Przetakiewicz W.

• Department of Advanced Materials and Technologies, Military University of Technology, Kaliskiego 2, 00-908 Warsaw, Poland,

Bibliografia

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