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Crevice Corrosion - NaCI Concentration Map for Grade-2 Titanium at Elevated Temperature

Published online by Cambridge University Press:  01 January 1992

Shigeo Tsujikawa  and
Yoichj Kojima
Shigeo Tsujikawa
Affiliation:
The University of Tokyo, Department of Metallurgy, 7-3-1 Hongo, Bunkyo-ku, Bunkyo-ku, 113JAPAN
Yoichj Kojima
Affiliation:
The University of Tokyo, Department of Metallurgy, 7-3-1 Hongo, Bunkyo-ku, Bunkyo-ku, 113JAPAN
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Abstract

The repassivation potential, ER, for metal/metal-crevice of Commercially Pure Titanium, C.P.Ti, was determined in NaC1 solutions at temperatures up to 250C. The ER has its least noble value near 100C and becomes more noble as the temperature increases. As shown in previous research[1], the shrinkage of the repassivation region should continue with increasing temperatures. However, in conducting this same experiment at temperatures higher than 100C, an examination of the NaCI concentration - temperature - crevice corrosion map verifies that the repassivation region began to expand again when the temperature exceeded 140C. This expansion continued as the temperature continued to increase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 311
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

1. Tsujikawa, Shigeo and Kojima, Yoichi, in, Scientific Basis for Nuclear Waste Management XIV. edited by Abrayano, T. Jr. and Johnson, Lawrence H. (MRS, 1991) pp. 261-268 Google Scholar
2. Iki, F. and Tsujikawa, S., Tetsu-to-Hagané, 7 5, 1332 (1989)Google Scholar