Method for making a high temperature, high pressure, erosion and corrosion resistant composite structure
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United States of America Patent
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Aug 10, 1999
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app pub date -
Nov 14, 1997
filing date -
Jun 14, 1995
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Abstract
The present invention is a metallic composite which is resistant to erosion and corrosion at the high temperatures and pressures which are encountered in gun tubes, including projectile launchers. This composite comprises a ductile layer of rhenium or a rhenium alloy containing more than 20 percent rhenium, and a layer of a lower cost high strength material such as steel, nickel, nickel alloy, cobalt, or cobalt alloy. A solid solution of the two metals is formed between the two layers making a metallurgical bond. The metallurgical bond may be enhanced through the use of a bond promoter having solubility with both metallic layers.
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