ZIRCONIUM ALLOY FOR NUCLEAR FUEL ASSEMBLY

Zr alloy for the nuclear fuel assembly contains Fe, Cr, Sn, Nb. Moreover, Zr alloy for nuclear fuel assembly contains O positively. The ratio of these elements shows an improvement effect in both strength and corrosion resistance. A total amount of Sn and Nb influences strength. It is desirable that...

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Hauptverfasser: DOI, SOICHI, SUZUKI, SHIGEMITU, SUGANO, MITUTERU, SENDA, YASUHIDE, TAKAHASHI, TOSHIMICHI, KIDO, TOSHIYA
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Zr alloy for the nuclear fuel assembly contains Fe, Cr, Sn, Nb. Moreover, Zr alloy for nuclear fuel assembly contains O positively. The ratio of these elements shows an improvement effect in both strength and corrosion resistance. A total amount of Sn and Nb influences strength. It is desirable that the total amount of Sn and Nb is equal to or more than 0.7%. A total amount of Fe and Cr is also important. It is desirable that the total amount is 0.28 to 1.0 weight%. In this way, endurance (strength) is improved, corrosion resistance is improved at the same time and moreover, hydrogen absorption and dimensional stability can be improved.