TY - GEN
T1 - Corrosion behavior of zirconium based alloys in simulated body fluids
AU - Tsutsumi, Yusuke
AU - Takano, Yousuke
AU - Doi, Hisashi
AU - Noda, Kazuhiko
AU - Hanawa, Takao
PY - 2007
Y1 - 2007
N2 - The corrosion behavior of Zr-Ti and Zr-Hf alloys with various concentrations in properly deaerated Hanks' solution were investigated by electrochemical techniques. The effects of the thermal treatment with the purpose of homogenization of chemical composition on the pitting potentials of the Zr-Ti alloys were also examined. The results indicated that sufficient addition of Ti to Zr improved its corrosion resistance, especially in terms of the pitting potential and the passive current density. On the other hand, addition of Hf totally lowered the corrosion resistance of the alloy. The thermal treatment improved the pitting corrosion property of Zr-Ti alloys, and Zr alloys with over 5mol% Ti showed much higher pitting potentials than that of pure Zr. The treatment also improved the reproducibility of the measurement and narrowed the data scattering. This phenomenon was discussed with the model of rapidly-cooled metallographic structure.
AB - The corrosion behavior of Zr-Ti and Zr-Hf alloys with various concentrations in properly deaerated Hanks' solution were investigated by electrochemical techniques. The effects of the thermal treatment with the purpose of homogenization of chemical composition on the pitting potentials of the Zr-Ti alloys were also examined. The results indicated that sufficient addition of Ti to Zr improved its corrosion resistance, especially in terms of the pitting potential and the passive current density. On the other hand, addition of Hf totally lowered the corrosion resistance of the alloy. The thermal treatment improved the pitting corrosion property of Zr-Ti alloys, and Zr alloys with over 5mol% Ti showed much higher pitting potentials than that of pure Zr. The treatment also improved the reproducibility of the measurement and narrowed the data scattering. This phenomenon was discussed with the model of rapidly-cooled metallographic structure.
KW - Corrosion resistance
KW - Passive film
KW - Pitting corrosion
KW - Zirconium
UR - http://www.scopus.com/inward/record.url?scp=38349118032&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38349118032&partnerID=8YFLogxK
U2 - 10.4028/0-87849-462-6.1489
DO - 10.4028/0-87849-462-6.1489
M3 - Conference contribution
AN - SCOPUS:38349118032
SN - 0878494626
SN - 9780878494620
T3 - Materials Science Forum
SP - 1489
EP - 1492
BT - Selected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PB - Trans Tech Publications Ltd
T2 - 6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Y2 - 5 November 2007 through 9 November 2007
ER -