Construction Materials Development in Sulfur-Iodine Thermochemical Water-Splitting Process for Hydrogen Production

Authors

B. Wong, Inertial Fusion Technology GroupFollow
R. T. Buckingham, Inertial Fusion Technology Group
L. C. Brown, Inertial Fusion Technology GroupFollow
B. E. Russ, Inertial Fusion Technology Group
Gottfried Besenbruch, Inertial Fusion Technology GroupFollow
Ancila V. Kaiparambil, University of Nevada, Las VegasFollow
Radhakrishnan Santhanakrishnan, University of Nevada, Las VegasFollow
Ajit K. Roy, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

3-2007

Publication Title

International Journal of Hydrogen Energy

Volume

32

Issue

4

First page number:

497

Last page number:

504

Abstract

The sulfur iodine (SI) water splitting cycle for hydrogen production consists of three coupled chemical reactions, which includes the generation and decomposition of HI. The HI_x environment is extremely corrosive and the severity increases with temperature. Immersion coupon corrosion screening tests were performed on materials selected from four classes of corrosion resistant materials: refractory metal, reactive metal, superalloys and ceramics. Of the materials tested, only Ta and Nb-based refractory metals and ceramic mullite can tolerate the extreme HI_x environment. Severe pitting and dissolution was observed in two different reactive metal zirconium. A nickel based superalloy, C-276, also showed severe dissolution inHI_x solution. The materials which showed good corrosion behavior will undergo further long-term immersion testing to assess performance. In addition, C-ring, U-bend and DCB test samples fabricated from qualified materials will be tested under stress corrosion conditions to investigate their crack initiation and growth properties.

Keywords

Ceramics; Corrosion; Corrosion and anti-corrosives; Hydrogen; Hydrogen as fuel; Mullite; Niobium alloys; Stress corrosion; Sulfur iodine cycle; Tantalum alloys; Thermochemical cycle; Thermochemistry

Disciplines

Ceramic Materials | Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Metallurgy | Oil, Gas, and Energy | Structural Materials | Thermodynamics

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Wong, B., Buckingham, R. T., Brown, L. C., Russ, B. E., Besenbruch, G., Kaiparambil, A. V., Santhanakrishnan, R., Roy, A. K. (2007). Construction Materials Development in Sulfur-Iodine Thermochemical Water-Splitting Process for Hydrogen Production. International Journal of Hydrogen Energy, 32(4), 497-504.