Hydride production in zircaloy-4 as a function of time and temperature

Show full item record

Title: Hydride production in zircaloy-4 as a function of time and temperature
Author: Parkison, Adam Joseph
Abstract: The experiments performed for this thesis were designed to define the primary process variables of time , temperature , and atmosphere for an engineering system that will produce metal powder from recycled nuclear fuel cladding . The proposed system will hydride and mill Zircaloy cladding tubes to produce fine hydride powder and then dehydride the powder to produce metal ; this thesis is focused on the hydride formation reaction . These experiments were performed by hydriding nuclear grade Zircaloy -4 tubes under flowing argon -5 % hydrogen for various times and temperatures . The result of these experiments is a correlation which relates the rate of zirconium hydride formation to the process temperature . This correlation may now be used to design a method to efficiently produce zirconium hydride powder . It was observed that it is much more effective to hydride the Zircaloy -4 tubes at temperatures below the a -B -d eutectoid temperature of 540 ?C . These samples tended to readily disassemble during the hydride formation reaction and were easily ground to powder . Hydrogen pickup was faster above this temperature but the samples were generally tougher and it was difficult to pulverize them into powder .
URI: http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2788
Date: 2009-05-15

Citation

Hydride production in zircaloy-4 as a function of time and temperature. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2788 .

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show full item record

Search DSpace

Advanced Search

Browse