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All Library Books, journals and Electronic Records Telegrafenberg

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  • 1995-1999  (2)
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  • 1
    Publication Date: 2019-06-28
    Description: Corrosion rates for bare and coated Magnesium alloy AZ31B have been measured. Two coatings, Dow-23(Trademark) and Tagnite(Trademark), have been tested by electrochemical methods and their effectiveness determined. Electrochemical methods employed were the scanning reference electrode technique (SRET), the polarization resistance technique (PR) and the electrochemical impedance spectroscopy technique (EIS). In addition, general corrosion and stress corrosion methods were employed to examine the effectiveness of the above coatings in 90 percent humidity. Results from these studies are presented.
    Keywords: Metallic Materials
    Type: NASA/TP-97-206239 , NAS 1.60:206239 , M-841
    Format: application/pdf
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  • 2
    Publication Date: 2019-06-28
    Description: This document is prepared to provide a systematic process for the selection of tethers for space applications. Criteria arc provided for determining the strength requirement for tether missions and for mission success from tether severing due to micrometeoroids and orbital debris particle impacts. Background information of materials for use in space tethers is provided, including electricity-conducting tethers. Dynamic considerations for tether selection is also provided. Safety, quality, and reliability considerations are provided for a tether project.
    Keywords: Spacecraft Design, Testing and Performance
    Type: NASA-TM-108537 , NAS 1.15:108537
    Format: application/pdf
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