METHODS OF DETERMINING IN-REACTOR SUSCEPTIBILITY OF A ZIRCONIUM-BASED ALLOY TO SHADOW CORROSION
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United States of America Patent
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Issued Date -
Feb 9, 2012
app pub date -
Aug 4, 2010
filing date -
Aug 4, 2010
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Abstract
A method of determining in-reactor susceptibility of a zirconium-based alloy to shadow corrosion according to a non-limiting embodiment of the present invention may include immersing a first electrode and a second electrode in an electrolytic solution. The first electrode may be formed of the zirconium-based alloy, while the second electrode may be formed of a metallic material suitable for use in a nuclear reactor and having a higher electrochemical corrosion potential than the zirconium-based alloy. The method may additionally include irradiating the immersed first and second electrodes with electromagnetic radiation. A galvanic current may then be measured between the first electrode and the second electrode to ascertain the relative in-reactor susceptibility of the zirconium-based alloy to shadow corrosion. The present invention allows a simplified and more rapid method of developing solutions that mitigate shadow corrosion, thereby potentially saving years of expensive in-reactor testing.
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