C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/51 (2006.01) C04B 35/48 (2006.01) C04B 35/626 (2006.01) C04B 35/634 (2006.01) C04B 35/64 (2006.01) C23C 4/10 (2006.01) C23C 24/00 (2006.01) F01D 11/12 (2006.01) F16J 15/44 (2006.01)
Patent
CA 2585992
Ceramic abradable materials, in particular thermally sprayable ceramic abradable powder materials, and abradable seals formed by thermally spraying the materials include dysprosia (Dy2O3) and zirconia (ZrO2). Coatings are porous whereby the porosity, in part, is induced by plastic or fugitive phases. Abradable seal coatings comprising dysprosia and zirconia exhibit improved thermal shock and sintering resistance and can be worn into tolerance by untreated, bare turbine blades, at least in certain regimes of relative blade speed and coating porosity. Ceramic abradable seal coatings comprising dysprosia and zirconia can be used up to 1200 °C.
Dorfman Mitchell R.
Giannozzi Massimo
Giovannetti Lacopo
Nicoll Andrew R.
Sporer Dieter R.
Gowling Lafleur Henderson Llp
Nuovo Pignone S.p.a.
Sulzer Metco (us) Inc.
Universita' Degli Studi Di Firenze
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