scholarly journals High Temperature Zirconium Alloys for Fusion Energy

2021 ◽  
pp. 153431
Author(s):  
DJM King ◽  
AJ Knowles ◽  
D Bowden ◽  
MR. Wenman ◽  
S. Capp ◽  
...  
Keyword(s):  
High Temperature ◽  
Fusion Energy ◽  
Zirconium Alloys

Small, modular and economically attractive fusion enabled by high temperature superconductors

2019 ◽  
Vol 377 (2141) ◽  
pp. 20180354 ◽  
Author(s):  
Dennis Whyte
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
Magnetic Fields ◽  
Current Density ◽  
High Temperature Superconductors ◽  
Fusion Energy ◽  
High Magnetic Fields ◽  
Operating Temperatures ◽  
The Magnetic Field ◽  
Game Changer

The advantages of high magnetic fields in tokamaks are reviewed, and why they are important in leading to more compact tokamaks. A brief explanation is given of what limits the magnetic field in a tokamak, and why high temperature superconductors (HTSs) are a game changer, not just because of their higher magnetic fields but also for reasons of higher current density and higher operating temperatures. An accelerated pathway to fusion energy is described, defined by the SPARC and ARC tokamak designs. This article is part of a discussion meeting issue ‘Fusion energy using tokamaks: can development be accelerated?’.

Polycrystalline Diamond Films as Protection of Zircaloy Fuel Cladding

2014 ◽  
Author(s):  
Jan Škarohlíd ◽  
Radek Škoda
Keyword(s):  
High Temperature ◽  
Ion Beam ◽  
Cooling Water ◽  
Chemical Vapor ◽  
Polycrystalline Diamond ◽  
Zirconium Alloys ◽  
Carbon Layer ◽  
Primary Circuit ◽  
Temperature Oxidation ◽  
Diamond Layer

Polycrystalline diamond coating is a promising possibility for prevention, or reduction of high temperature oxidation of zirconium alloys. Zirconium alloys are used as cladding material in almost all types of nuclear reactors, where creates a barrier between nuclear fuel and cooling water in the primary circuit. Hydrogen and considerable amount of heat is released during steam oxidation that may occur in an eventual accident. In this paper Zircaloy-2 alloy was covered by polycrystalline diamond layer using Plasma Enhanced Linear Antennas Microwave Chemical Vapor Deposition system reactor. X-Ray Diffraction and Raman spectroscopy measurements confirmed coverage of the surface area with crystalline and amorphous carbon layer. Characterizations were done for zirconium alloy covered with diamond layer before and after corrosion and irradiation tests - ion beam irradiation tests and high temperature steam exposure.

Localized oxidation of zirconium alloys in high temperature and pressure oxidizing environments of nuclear reactors

2013 ◽  
Vol 65 (3) ◽  
pp. 244-249 ◽  
Author(s):  
M. Kiran Kumar ◽  
S. Aggarwal ◽  
D. Beniwal ◽  
A. K. Dey ◽  
H. Singh ◽  
...  
Keyword(s):  
High Temperature ◽  
Nuclear Reactors ◽  
Zirconium Alloys ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

Selection of new zirconium alloys for high temperature terphenyls

1970 ◽  
Vol 37 (3) ◽  
pp. 257-275 ◽  
Author(s):  
G.C. Imarisio ◽  
M. Cocchi ◽  
G. Faini
Keyword(s):  
High Temperature ◽  
Zirconium Alloys ◽  
Selection Of

Vacuum-arc chromium-based coatings for protection of zirconium alloys from the high-temperature oxidation in air

2015 ◽  
Vol 465 ◽  
pp. 400-406 ◽  
Author(s):  
А.S. Kuprin ◽  
V.А. Belous ◽  
V.N. Voyevodin ◽  
V.V. Bryk ◽  
R.L. Vasilenko ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Zirconium Alloys ◽  
Vacuum Arc ◽  
Temperature Oxidation ◽  
Oxidation In Air

scholarly journals HIGH-TEMPERATURE OXIDATION OF CHROME-NICKEL ALLOY

2020 ◽  
Vol 28 ◽  
pp. 8-14
Author(s):  
Adéla Chalupová ◽  
Martin Steinbrück ◽  
Mirco Grosse ◽  
Jakub Krejčí ◽  
Martin Ševeček
Keyword(s):  
High Temperature ◽  
Melting Point ◽  
High Temperature Oxidation ◽  
Zirconium Alloys ◽  
Temperature Oxidation ◽  
Ni Alloy ◽  
Institute Of Technology ◽  
Kinetics Of ◽  
Karlsruhe Institute ◽  
Nuclear Applications

The investigations in this paper deal with the Cr-Ni alloy. The material has been recently proposed as a potential ATF concept, primarily due to its behaviour under high-temperature oxidation. A set of experiments to determine the melting point and describe the oxidation kinetics of the Cr-Ni alloy were performed in Karlsruhe Institute of Technology. Presented results reveal its superb oxidation resistance comparing to zirconium alloys. Therefore, the alloy has a great potential for nuclear applications.

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