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Corrosion Behavior of Weldments of Ti and Ti- 5Ta for Nuclear Fuel Reprocessing Plants

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Abstract

Corrosion studies on specimens of nuclear- grade type 304L stainless steel, titanium, Ti- 5Ta, and their respective weldments were carried out in a boiling nitric acid medium, as well as in boiling nitric acid containing hexavalent chromium and divalent silver ions. The weldments were prepared using a tungsten inert gas welding process. Titanium and its weldment showed excellent corrosion resistance in both media compared to 304L stainless steel. Specimens of Ti- 5Ta alloy base showed excellent corrosion resistance, whereas its weldment showed higher corrosion rates in boiling nitric acid medium. Scanning electron microscopy and x- ray diffraction analyses were carried out on the tested specimens to examine the scale morphology and the phases present on the surface.

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Authors and Affiliations

  1. Metal- lurgy Division, Indira Gandhi Centre for Atomic Research, 603 102, Kalpak- kam, India

    U. Kamachi Mudali, R.K Dayal & J.B Gnanamoorthy

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  1. U. Kamachi Mudali
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  2. R.K Dayal
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  3. J.B Gnanamoorthy
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Mudali, U.K., Dayal, R. & Gnanamoorthy, J. Corrosion Behavior of Weldments of Ti and Ti- 5Ta for Nuclear Fuel Reprocessing Plants. JMEP 4, 756–760 (1995). https://doi.org/10.1007/BF02646452

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