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US08650753B2 Seal and a method of manufacturing a seal 有权
密封件和制造密封件的方法

Seal and a method of manufacturing a seal
Abstract:
A seal (48) between a compressor rotor blade (26) and compressor casing (28) comprises an abradable structure (59) on the compressor casing (28). The abradable structure (59) comprises a metallic foam (60) having pores (66, 68). The metallic foam (60) has a first a region (62) and a second region (64). The first region (62) of the metallic foam (60) is arranged adjacent to the compressor casing (28) and the second region (64) of the metallic foam (60) is spaced from the compressor casing (28) by the first region (62) of the metallic foam (60). The pores (68) of the second region (64) of the metallic foam (60) contain an abradable material (70) and the pores (66) of the first region (62) of the metallic foam (60) do not contain an abradable material.
Abstract(Chinese):

压缩机转子叶片（26）和压缩机壳体（28）之间的密封件（48）包括在压缩机壳体（28）上的可磨损结构（59）。 可磨损结构（59）包括具有孔（66,68）的金属泡沫（60）。 金属泡沫（60）具有第一区域（62）和第二区域（64）。 金属泡沫（60）的第一区域（62）布置成邻近压缩机壳体（28），并且金属泡沫（60）的第二区域（64）与压缩机壳体（28）间隔开第一区域 （60）的金属泡沫（62）。 金属泡沫（60）的第二区域（64）的孔（68）包含可磨损材料（70），并且金属泡沫（60）的第一区域（62）的孔隙（66）不含有 耐磨材料。

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