ZIRCONIUM ALLOY HAVING EXCELLENT MECHANICAL PROPERTIES AND CORROSION RESISTANCE FOR NUCLEAR FUEL ROD CLADDING TUBE

摘要

PURPOSE: A zirconium alloy for nuclear fuel jacket pipe is provided to improve mechanical properties and corrosion resistance required for the nuclear fuel jacket pipe. CONSTITUTION: A zirconium alloy for nuclear fuel jacket pipe is made of a zirconium comprising at least one component selected from a group composed of 0.2-5 wt% of Nb, 0.001-0.3 wt% of Fe, and 0.001-1 wt% of Sn; at least one component selected from a group composed 0.1-5 wt% of Ti and 0.1-5 wt% of Al; and the rest of unavoidable impurities. [Reference numerals] (AA) Amount of increased weight after 100 hours (mg/dm^2); (BB,LL) Example 1; (CC,MM) Example 2; (DD,NN) Example 3; (EE,OO) Example 4; (FF,PP) Example 5; (GG,QQ) Example 6; (HH,RR) Example 7; (II,SS) Example 8; (JJ,TT) Comparative example; (KK) Amount of increased weight after 200 hours (mg/dm^2)