A flow machine with a ceramic abradable

Details A flow machine with a ceramic abradable A flow machine with a ceramic abradable

C - Chemistry, Metallurgy

04

B

C04B 35/10 (2006.01) B02C 17/00 (2006.01) B05D 1/12 (2006.01) B05D 3/02 (2006.01) B22F 3/10 (2006.01) B32B 18/00 (2006.01) C04B 41/85 (2006.01) C23C 4/10 (2006.01) C23C 4/18 (2006.01) C23C 8/02 (2006.01)

Patent

CA 2488949

The flow machine is furnished with an abradable (10) made of a particle composite material. This so-called composite (1) contains granular core particles (2) of a ceramic material. The surfaces (20) of the granular core particles carry functional layers (22) which form an intermediate phase of the composite which is stable at a high operating temperature. The intermediate phase in this process has been produced in situ at least in part by a chemical reaction of a precursor material (22') and material (21) of the granular core particles on the particle surfaces (20). Bonds (23) are formed between the granular core particles arranged in a porous composite by the intermediate phase. These bonds have a breaking characteristic for abradables.

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