Materials evaluation for geothermal applications: turbine materials

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A number of candidate turbine materials are being evaluated for their resistance to erosion, corrosion, and stress corrosion cracking (SCC) in geothermal brines. These materials include Fe-, Ni-, Co and Ti-base alloys, coatings and ceramics. Tapered wearblades, simulating the leading edge of a turbine blade, are exposed to the direct impact of a two-phase nozzle exhaust. Bent beam SCC specimens, which are constrained in fixtures attached to the wearblade holders, are also exposed to this exhaust. Results of a test series are reported in which acidified liquid brine was expanded to atmospheric pressure are reported. The tests were performed at … continued below

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4 pages

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Goldberg, A. & Garrison, R.E. April 13, 1977.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 22 times. More information about this article can be viewed below.

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  • Lawrence Livermore Laboratory
    Publisher Info: California Univ., Livermore (USA). Lawrence Livermore Lab.
    Place of Publication: Livermore, California

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A number of candidate turbine materials are being evaluated for their resistance to erosion, corrosion, and stress corrosion cracking (SCC) in geothermal brines. These materials include Fe-, Ni-, Co and Ti-base alloys, coatings and ceramics. Tapered wearblades, simulating the leading edge of a turbine blade, are exposed to the direct impact of a two-phase nozzle exhaust. Bent beam SCC specimens, which are constrained in fixtures attached to the wearblade holders, are also exposed to this exhaust. Results of a test series are reported in which acidified liquid brine was expanded to atmospheric pressure are reported. The tests were performed at the LLL Field Test Station near Niland in the Salton Sea Geothermal Field. Evaluation of the exposed materials indicates that Ti-base alloys show the most promise for turbine wheel components in the high salinity geothermal environments.

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4 pages

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Dep. NTIS, PC A02/MF A01.

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  • Geothermal Resources Council, San Diego, CA, USA, 9 May 1977

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  • Report No.: UCRL-79360
  • Report No.: CONF-770569-2
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 5371577
  • Archival Resource Key: ark:/67531/metadc1074059

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 13, 1977

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  • Feb. 4, 2018, 10:51 a.m.

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  • April 23, 2019, 11:50 a.m.

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Goldberg, A. & Garrison, R.E. Materials evaluation for geothermal applications: turbine materials, article, April 13, 1977; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc1074059/: accessed June 8, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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