Studies of the Hydrogen Damage Mechanism in the Corrosion of Zirconium

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It is difficult to evaluate the effect of cathodic elements on the corrosion of zirconium in water because of the low corrosion rate. By the addition of 0.5 wt% of titanium, however, the oxidation of zirconium to ZrO/sub 2/ in 350 deg C water is increased, permitting a better relative evaluation of the effect of different cathodic elements. Alloys contairing 0.1 wt% iron, nickel, copper or platinum in addition to 0.5 wt % titanium had lower corrosion rates than the 0.5 wt% titanium alloy alone. The largest improvement was derived from nickel and the least from platinum. The nickel alloy ... continued below

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20 p.

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Misch, R. D. May 1, 1961.

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Description

It is difficult to evaluate the effect of cathodic elements on the corrosion of zirconium in water because of the low corrosion rate. By the addition of 0.5 wt% of titanium, however, the oxidation of zirconium to ZrO/sub 2/ in 350 deg C water is increased, permitting a better relative evaluation of the effect of different cathodic elements. Alloys contairing 0.1 wt% iron, nickel, copper or platinum in addition to 0.5 wt % titanium had lower corrosion rates than the 0.5 wt% titanium alloy alone. The largest improvement was derived from nickel and the least from platinum. The nickel alloy had the disadvantage of absorbing 90% of the corrosion hydrogen while the platinum alloy absorbed a negligible corrosion resistance and hydrcgen absorption. In the presence of oxidizing agents (CuSO/sub 4/, CdSO/sub 4/, I/sub 2/) the absorption of hydrogen diminished and corrosion resistance showed a further improvement. These results were interpreted to indicate that hydrogen may be damaging within the oxide as well as at the metal-oxide interface. Zirconium compacts, sintered with conducting dispersants, were inferior in corroston resistance to arc-melted zirconium. The cathodes were beneficial only by comparison with zirconium controls sintered under the same conditions. In complex alloys, cathodes may arise in a variety of ways and the corrosion resistance of the intermetallics may be of importance. (auth)

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20 p.

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  • Other Information: Orig. Receipt Date: 31-DEC-61

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  • Report No.: ANL-6232
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/4039977 | External Link
  • Office of Scientific & Technical Information Report Number: 4039977
  • Archival Resource Key: ark:/67531/metadc868877

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 1, 1961

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 12, 2017, 2:59 p.m.

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Misch, R. D. Studies of the Hydrogen Damage Mechanism in the Corrosion of Zirconium, report, May 1, 1961; Illinois. (digital.library.unt.edu/ark:/67531/metadc868877/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.