Metallurgical and Corrosion Characterization of Structural Materials for the Nuclear Hydrogen Initiative

Document Type

Conference Proceeding


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.


Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Metallurgy | Nuclear Engineering | Oil, Gas, and Energy | Sustainability


Materials Science & Technology 2005 Conference and Exhibition (MS&T Partner Societies).


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