Abstract
The aim of the IL TROVATORE project is the
development, characterization and testing of potential
materials for nuclear fuel rod claddings with enhanced
accident tolerance. One main task of the ongoing
investigations are testing of the cladding/coolant
interactions under operational as well as accident
conditions. A wide range of materials was already tested:
oxides, MAX phases, SiC and iron based alloys. The
paper gives a rough overview about the results of
autoclave tests simulating operational conditions and
steam oxidation tests at 1200°C covering transient design
basis accident conditions.
The results of corrosion tests demonstrates the
excellent performance of protective zirconia layers under
operational conditions. Whereas chromia shows a low
corrosion rate too, the water corrosion of alumina is
problematic. The reaction rates obtained for Cr2AlC MAX
phase depends strongly on the porosity of the material.
Dense material behaves well whereas the corrosion of
porous material is fast. The best performance in the steam
oxidation tests at 1200°C shows SiC followed by dense
Cr2AlC MAX phase, FeCrAl and high entropy alloys.
Additional information concerning the reaction rates
were obtained by measuring the hydrogen release. For
several materials it could be shown that not only
processes occur resulting in mass gain but simultaneous
reactions take place resulting in a mass loss,
Original language | English |
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Title of host publication | International Nuclear Fuel Cycle Conference and TOP FUEL 2019 |
Subtitle of host publication | Light Water Reactor Fuel Performance conference |
Publisher | American Nuclear Society |
Pages | 274-279 |
Number of pages | 6 |
State | Published - 22 Sep 2019 |
Event | 2019 - Global/Top Fuel: Light water reactor fuel performance conference - The Westin Seattle, Seattle Duration: 22 Sep 2019 → 26 Sep 2019 Conference number: 157481 http://globaltopfuel.ans.org/ |
Conference
Conference | 2019 - Global/Top Fuel |
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Country/Territory | United States |
City | Seattle |
Period | 2019-09-22 → 2019-09-26 |
Internet address |