초록 ▼

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

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.

대표청구항 ▼

[ What is claimed is:] [1.] A method of forming a high temperature, high pressure erosion and corrosion resistant composite gun tube structure comprising the steps of:(a) machining a mandrel to a desired configuration;(b) chemically vapor depositing a first layer of high temperature, erosion and cor

[ What is claimed is:] [1.] A method of forming a high temperature, high pressure erosion and corrosion resistant composite gun tube structure comprising the steps of:(a) machining a mandrel to a desired configuration;(b) chemically vapor depositing a first layer of high temperature, erosion and corrosion resistant metal onto said mandrel to a desired thickness;(c) applying an interlayer of a metallic bond promoting metal onto said first layer 3(d) forming a second layer of structural metal over said interlayer;(e) heat treating said first and second layers and said interlayer to form a metallurgical bond between said first and second layers, said metallurgical bond comprising a solid solution of the metals of said first and second layers and an amount of said metallic bond promoting metal effective to promote said metallurgical bond;(f) machining said second layer to final dimensions; and(g) removing said mandrel.