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CORROSION OF CHROMIUM-NICKEL STAINLESS STEEL IN LITHIUM (KORROZIYA NERZHAVEYUSHCHEI KHROMONIKELEVOI STALI V LITII)
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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Three series of 1Kh18N9T stainless-steel specimens were tested for corrosion behavior in lithium at 700C for 10 or 200 hr. Series 1 and 2 specimens were tested in lithium containing a small amount of C14 isotope and in tanks made of 1Kh18N9T steel series 1 or Armco-iron series 2. In the case of series 3 specimens, the lithium contained 0.1 carbon in addition to C14 and the tanks were made of Armco-iron. The corrosion was found to follow the same pattern under all the conditions tested, and characterized by a gradual dissolution of chromium and nickel from the surface layer of the specimens. With decreasing chromium and nickel content the steel changes its structure and gradually loses its corrosion resistance.
APPROVED FOR PUBLIC RELEASE