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Title: Hypereutectic heat storage alloy: Final report, Silicon shell integrity in molten Al-Si eutectic

Abstract

As a part of a program to evaluate the feasibility of using silicon encapsulated spheres of aluminum--silicon eutectic for thermal energy storage at temperatures near 650/degree/C, experiments were done to test the dimensional stability of the interface between silicon and the eutectic to thermal cycling. Cycled samples were sectioned and examined by optical micrography and by electron microscopy (SEM/EDX) techniques. Little or no degradation of the interface was observed at 600/degree/C (eutectic temperature 577/degree/C) while catastrophic degradation occurred at 700/degree/C. AT 650/degree/C interpenetration of 0.1/endash/0.2 mm was observed between the silicon and the eutectic alloys, with occasional larger (3/endash/4 mm) intrusions. 11 refs., 15 figs., 3 tabs.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
6928390
Report Number(s):
ORNL/TM-10380
ON: DE88013352
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; ALUMINIUM ALLOYS; SPHERES; SILICON; HEAT STORAGE; ELECTRON MICROSCOPY; ENCAPSULATION; EXPERIMENTAL DATA; FLOWSHEETS; FREEZING; LABORATORY EQUIPMENT; MELTING; PHASE DIAGRAMS; PROGRESS REPORT; ALLOYS; DATA; DIAGRAMS; DOCUMENT TYPES; ELEMENTS; ENERGY STORAGE; EQUIPMENT; INFORMATION; MICROSCOPY; NUMERICAL DATA; PHASE TRANSFORMATIONS; SEMIMETALS; STORAGE; 250600* - Energy Storage- Thermal

Citation Formats

Bennett, M R, and Braunstein, J. Hypereutectic heat storage alloy: Final report, Silicon shell integrity in molten Al-Si eutectic. United States: N. p., 1988. Web.
Bennett, M R, & Braunstein, J. Hypereutectic heat storage alloy: Final report, Silicon shell integrity in molten Al-Si eutectic. United States.
Bennett, M R, and Braunstein, J. 1988. "Hypereutectic heat storage alloy: Final report, Silicon shell integrity in molten Al-Si eutectic". United States.
@article{osti_6928390,
title = {Hypereutectic heat storage alloy: Final report, Silicon shell integrity in molten Al-Si eutectic},
author = {Bennett, M R and Braunstein, J},
abstractNote = {As a part of a program to evaluate the feasibility of using silicon encapsulated spheres of aluminum--silicon eutectic for thermal energy storage at temperatures near 650/degree/C, experiments were done to test the dimensional stability of the interface between silicon and the eutectic to thermal cycling. Cycled samples were sectioned and examined by optical micrography and by electron microscopy (SEM/EDX) techniques. Little or no degradation of the interface was observed at 600/degree/C (eutectic temperature 577/degree/C) while catastrophic degradation occurred at 700/degree/C. AT 650/degree/C interpenetration of 0.1/endash/0.2 mm was observed between the silicon and the eutectic alloys, with occasional larger (3/endash/4 mm) intrusions. 11 refs., 15 figs., 3 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/6928390}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1988},
month = {Wed Jun 01 00:00:00 EDT 1988}
}

Technical Report:
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