dc.contributor.author |
Nicholls, John R. |
- |
dc.contributor.author |
Simms, Nigel J. |
- |
dc.contributor.author |
Chan, W. Y. |
- |
dc.contributor.author |
Evans, H. E. |
- |
dc.date.accessioned |
2012-03-02T23:01:46Z |
|
dc.date.available |
2012-03-02T23:01:46Z |
|
dc.date.issued |
2002-01-15T00:00:00Z |
- |
dc.identifier.citation |
J. R. Nicholls, N. J. Simms, W. Y. Chan, H. E. Evans, Smart overlay coatings -
concept and practice, Surface and Coatings Technology, Volume 149, Issues 2-3,
15 January 2002, Pages 236-244 |
- |
dc.identifier.issn |
0257-8972 |
- |
dc.identifier.uri |
http://dx.doi.org/10.1016/S0257-8972(01)01499-2 |
- |
dc.identifier.uri |
http://dspace.lib.cranfield.ac.uk/handle/1826/3089 |
|
dc.description.abstract |
Smart overlay coatings are a functionally gradient coating system designed to
provide high temperature corrosion protection over a wide range of operating
conditions. The SMARTCOAT design consists of a MCrAlY base, enriched first in
chromium, then aluminium to provide a chemically graded structure. At elevated
temperatures, above 900°C (1650°F), the coating oxidises to form a protective
alumina scale. However, at lower temperatures this alumina scale does not reform
rapidly enough to confer protection under type II hot corrosion conditions. The
coating is therefore designed with an intermediate chromium-rich interlayer,
which permits the rapid formation of chromia healing areas of type II corrosion
damage. Laboratory and burner rig tests have been carried out on a series of
developmental smart overlay coatings. These have shown that the development of
an intermediate chromium-rich phase provides protection under low temperature
hot corrosion conditions, while the aluminium-rich surface layer provides
resistance to high temperature oxidation and type I hot corrosion. Thus, the
single application of SMARTCOAT permits operation over a broad range of
industrial and marine turbine condition |
en_UK |
dc.language.iso |
en_UK |
- |
dc.publisher |
Elsevier Science B.V., Amsterdam. |
en_UK |
dc.subject |
High temperature |
en_UK |
dc.subject |
Graded overlay coatings |
en_UK |
dc.subject |
Corrosion resistance |
en_UK |
dc.subject |
Oxidation resistance |
en_UK |
dc.title |
Smart overlay coatings - concept and practice |
en_UK |
dc.type |
Article |
- |