Oxidation of zirconium alloys in 2.5 kPa water vapor for tritium readiness.

Mills, Bernice E.

Sandia National Laboratories

关键词: Alloys;    Nickel;    Oxidation;    Liners;    Oxides;   

DOI  :  10.2172/942209
RP-ID  :  SAND2008-2638
RP-ID  :  AC04-94AL85000
RP-ID  :  942209

美国|英语

来源: UNT Digital Library

【 摘 要 】

A more reactive liner material is needed for use as liner and cruciform material in tritium producing burnable absorber rods (TPBAR) in commercial light water nuclear reactors (CLWR). The function of these components is to convert any water that is released from the Li-6 enriched lithium aluminate breeder material to oxide and hydrogen that can be gettered, thus minimizing the permeation of tritium into the reactor coolant. Fourteen zirconium alloys were exposed to 2.5 kPa water vapor in a helium stream at 300 C over a period of up to 35 days. Experimental alloys with aluminum, yttrium, vanadium, titanium, and scandium, some of which also included ternaries with nickel, were included along with a high nitrogen impurity alloy and the commercial alloy Zircaloy-2. They displayed a reactivity range of almost 500, with Zircaloy-2 being the least reactive.