Metallurgical and Corrosion Characterization of Structural Materials for the Nuclear Hydrogen Initiative
The structural materials for high-temperature-heat-exchangers (HTHX) to generate hydrogen using nuclear power must withstand very hostile operating conditions including the presence of aggressive chemical species and unusually high operating temperatures. While different concepts are currently under consideration to generate nuclear hydrogen, a thermochemical water splitting cycle such as sulfuriodine (S-I) is a leading technology to achieve this goal. The S-I process involves the decomposition of hydroiodic acid (HIx) to generate hydrogen. This paper presents the preliminary data on general corrosion studies of Zr702, Zr705, Nb1Zr, and Nb7.5Ta in the HIx environment. The results of tensile testing of Zr705 at different temperatures are also included. Further the scanning electron microscopic characterization of corrosion coupons and the fracture morphology of tensile specimens have been presented.
Heat exchangers – Materials; High temperatures; Hydrogen as fuel; Niobium alloys – Cracking; Niobium alloys – Corrosion; Nuclear energy; Zirconium alloys – Cracking; Zirconium alloys – Corrosion
Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Metallurgy | Nuclear Engineering | Oil, Gas, and Energy | Sustainability
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Roy, A. K.,
Metallurgical and Corrosion Characterization of Structural Materials for the Nuclear Hydrogen Initiative.
Materials Science and Technology 2005 Conference