Method for forming a layer of synthetic corrosion products on tubing surfaces

Patent · 01 January 1996

OSTI ID:870618

Lane, Michael H ^[1]; Salamon, Eugene J. M. ^[1]

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1. Clifton Park, NY

A method is provided for forming a synthetic corrosion product layer on tube surfaces. The method utilizes two dissimilar materials with different coefficients of thermal expansion. An object tube and sacrificial tube are positioned one inside the other such that an annular region is created between the two tubes' surfaces. A slurry of synthetic corrosion products is injected into this annular region and the assembly is heat treated. This heat causes the tubes to expand, the inner tube with the higher coefficient of expansion expanding more than the outer tube, thereby creating internal pressures which consolidate the corrosion products and adhere the corrosion products to the tubing surfaces. The sacrificial tube may then be removed by conventional chemical etching or mechanical methods.

• Research Organization: Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
• DOE Contract Number: AC12-76SN00052
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5560883
• OSTI ID: 870618
• Country of Publication: United States
• Language: English

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