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Comparative Corrosion Behavior of Two Palladium-Containing Titanium Alloys

[+] Author Affiliations
Tiangan Lian, Raúl B. Rebak

Lawrence Livermore National Laboratory, Livermore, CA

Takashi Yashiki

Kobe Steel, Ltd, Osaka, Japan

Takenori Nakayama, Tomoaki Nakanishi

Kobe Steel, Ltd., Kobe, Japan

Paper No. PVP2006-ICPVT-11-93418, pp. 561-569; 9 pages
doi:10.1115/PVP2006-ICPVT-11-93418
From:
  • ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
  • Volume 7: Operations, Applications, and Components
  • Vancouver, BC, Canada, July 23–27, 2006
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4758-6 | eISBN: 0-7918-3782-3
  • Copyright © 2006 by ASME

abstract

The ASTM standard B 265 provides the requirements for the chemical composition of titanium (Ti) alloys. It is planned to use corrosion resistant and high strength titanium alloys to fabricate the drip shield at the proposed Yucca Mountain Repository. Titanium grade (Gr) 7 (R52400) and other Ti alloys are currently being characterized for this application. Ti Gr 7 contains 0.15% Palladium (Pd) to increase its corrosion performance. In this article we report results on the comparative short term corrosion behavior of Ti Gr 7 and a Ruthenium (Ru) containing alloy (Ti Gr 33). Ti Gr 33 also contains a small amount of Pd. Limited electrochemical testing such as polarization resistance and cyclic potentiodynamic curves showed that both alloys have a similar corrosion behavior in the tested environments.

Copyright © 2006 by ASME

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