C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/00 (2006.01) C09D 1/00 (2006.01)
Patent
CA 2717827
An abradable coating system (2-8) for a turbine or a compressor is proposed comprising at least one layer of woven or non-woven tissue (15) or foam made of a material selected from the group of. ceramic, glass, glass-ceramic, ceramic-metal composite and combinations thereof. Further a free-standing preformed element (18) comprising at least one layer of such a woven or non-woven tissue or foam is proposed filled with fillers and/or binder. Further a method for the preparation of such a system is disclosed. Finally a method for the repair of an abradable coating portion of a turbine or the compressor component (9) is disclosed, wherein in a first optional step the damaged portion is at least partly removed and/or cleaned and/or surface treated, and wherein in a second step at least one free-standing preformed abradable coating element (18) or a complete abradable coating system is attached to the component (9), preferably by using a matrix, wherein for example only a centre part (2) or a fraction of a centre part (2) is replaced.
Duval Sophie
Ferber Joergen
Grasso Piero-Daniele
Olliges Sven
Stankowski Alexander
Alstom Technology Ltd.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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