Effects of extreme and unusual conditions on LANA Alloys: year end report, FY15 (U)

Technical Report · Wed Sep 30 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1501824· OSTI ID:1501824

Shanahan, Kirk L. ^[1]; Stein, Edward A. ^[1]

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1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

The Extreme Operating Conditions Project (EXOP) was initiated in FY14 based on the desire to investigate the new ability offered by new hydride bed designs to go to higher temperatures than previously possible. This was especially pertinent due to the results of a scoping study that showed significant changes in isotherms after aging at 240 °C under ~400-600 psia of hydrogen for an extended period of ~1 year. Results from that study are shown in Figure 1. A mid-year¹ and year-end report² were issued covering the FY14 results obtained that showed significant isotherm changes could be induced in both LaNi_4.25Al_0.75 (LANA75) and LaNi_4.15Al_0.85 (LANA85) by holding a fully-loaded hydride material at 240 oC for various periods of time. A mid-year report for FY15³ was also issued that added more data and showed that these changes tended to be complete in ~100 days or less. This report adds new information obtained in the second half of FY15, primarily XRD results on retired samples, while retaining the information from the FY15 Mid-Year Report³.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC09-08SR22470
• OSTI ID: 1501824
• Report Number(s): SRNL-STI-2015-00498
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Hydrogen
hydride
Lanthanum
Nickel
Aluminum
Alloy