DIFFUSER OF ROTATING FLUID MACHINES
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United States of America Patent
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app pub date -
Nov 3, 2015
filing date -
Mar 30, 2007
priority date (Note) -
Abandoned
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Abstract
A diffuser of a rotating fluid machine that processes a gas with high level of contaminants is provided, the diffuser having an annular surface portion facing rotating vanes of a rotor of the rotating fluid machine, the annular surface portion being at least partially covered with an abradable and anti-encrustation coating including (A) a first lower metal-based coating layer applied on the annular surface portion of the diffuser, and (B) a second upper polymer-based coating layer applied on the first lower metal-based coating layer, wherein the first lower metal-based coating layer comprises 99% by weight of aluminum powder based on the total weight of the first lower-based coating layer and is anchored to the annular surface with a nickel and aluminum (NiAl) binder.
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