Overview of Liquid-Solid Reaction Mechanisms and Kinetics of MBe13 Formation for Lanthanide-Beryllium and Actinide-Beryllium Systems
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- National Nuclear Security Administration (NNSA), Washington, DC (United States)
Molten rare-earth elements form intermetallic compounds with solid beryllium of the form MBe13, where M represents any of the rare-earth metals (lanthanides). Importantly, an intermetallic compound with the same stoichiometry is formed between liquid plutonium and solid beryllium. These lanthanide and actinide intermetallic compounds are of interest because of their high melting points (in excess of 1500 °C) and simple (cubic) crystallographic lattice. Despite the possible useful properties of these intermetallic compounds, the kinetics and thermodynamics of their formation have not been well quantified. A series of experiments was performed at Los Alamos National Laboratory in the 1990s in an attempt to ascertain the mechanism responsible for intermetallic formation in a variety of lanthanide-beryllium and actinide-beryllium combinations. These data are reviewed and analyzed in the present report. A kinetic analysis is applied where possible to compare interactions between solid beryllium and molten lanthanum, cerium, praseodymium, samarium, and ytterbium; these results are further compared with data collected for the plutonium-beryllium system.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1809253
- Report Number(s):
- LA--14499
- Country of Publication:
- United States
- Language:
- English
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