Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings

Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings

High velocity oxy-liquid fuel (HVOLF) AlSnCu coatings are characterised following annealing for up to 5 hours at 300°C. A combination of statistical analysis of BSE images and TEM observations demonstrate the decrease in the number of sub-micron and nanoscale Sn particles with annealing, commensurat...

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Bibliographic Details
Main Authors: Kong, Chang-Jing, Moldovan, Grigore, Fay, Mike W., McCartney, D. Graham, Brown, Paul D.
Other Authors: McVitie, Stephen
Format: Book Section
Published: Institute of Physics Publishing 2004
Subjects:
TEM EELS EFTEM HVOLF AlSnCu
Online Access:https://eprints.nottingham.ac.uk/1446/
Description
Summary:High velocity oxy-liquid fuel (HVOLF) AlSnCu coatings are characterised following annealing for up to 5 hours at 300°C. A combination of statistical analysis of BSE images and TEM observations demonstrate the decrease in the number of sub-micron and nanoscale Sn particles with annealing, commensurate with a decrease in the coating microhardness. TEM evidence further suggests the coarsening of nanoscale Sn through a mechanism of a liquid phase migration within the Al matrix. EELS and EFTEM additionally allow the identification of the precipitation of theta'.

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