The influence of WC-Co HVOF thermal spraying on the microstructure of an Al-4 Cu alloy substrate

Journal Article · Sun Oct 01 04:00:00 UTC 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(95)00324-O· OSTI ID:237826

Guilemany, J M; Nutting, J; Dong, Z; Paco, J.M. de ^[1]

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1. Univ. de Barcelona (Spain)

The High Velocity Oxy-Fuel (HVOF) thermal spraying process can be used to produce a dense hard coating onto a metallic surface with a good bond between the coating and the substrate. Having developed techniques for the examination of the coating substrate interfacial regions with steel it was thought appropriate to examine the interfacial structure with other substrates. An aluminium copper alloy was chosen for this study for the following reasons: (1) There had been little earlier work on substrate reactions when using aluminium alloys, the published data was chiefly concerned with characterizing the coatings. (2) Aluminium alloys have a much lower melting point than steel, hence the substrate melted zone was likely to be much greater than that found in steel. (3) The structural characteristics of aged aluminium copper alloys have been well described and hence the structural changes produced in the alloy by thermal spraying could be compared with clearly established structural data so giving markers for the temperature profile well below the immediate interface region. As in the previous investigation the transmission electron microscope was used to examine thin foils prepared from the interface region and at various depths below the interface into the substrate.

• OSTI ID: 237826
• Journal Information: Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 7 Vol. 33; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
BONDING
COBALT
COMPOSITE MATERIALS
COPPER ALLOYS
FLAME SPRAYING
INTERFACES
ION BEAMS
MELTING
MICROSTRUCTURE
MILLING
PROTECTIVE COATINGS
SAMPLE PREPARATION
TRANSMISSION ELECTRON MICROSCOPY
TUNGSTEN CARBIDES