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Title: Synthesis of alloys with controlled phase structure

Abstract

A method is described for preparing controlled phase alloys useful for engineering and hydrogen storage applications. This novel method avoids melting the constituents by employing vapor transport, in a hydrogen atmosphere, of an active metal constituent, having a high vapor pressure at temperatures {approx_equal}300 C and its subsequent condensation on and reaction with the other constituent (substrate) of an alloy thereby forming a controlled phase alloy and preferably a single phase alloy. It is preferred that the substrate material be a metal powder such that diffusion of the active metal constituent, preferably magnesium, and reaction therewith can be completed within a reasonable time and at temperatures {approx_equal}300 C thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds. 4 figs.

Inventors:
; ; ;
Issue Date:
Research Org.:
Sandia Corporation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
350319
Patent Number(s):
5,895,518
Application Number:
PAN: 8-636,369
Assignee:
Sandia Corp., Livermore, CA (United States) SNL; SCA: 360101; 080201; PA: EDB-99:062858; SN: 99002098271
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 08 HYDROGEN FUEL; HYDROGEN STORAGE; MAGNESIUM ALLOYS; VAPOR PRESSURE; SUBSTRATES; VAPOR CONDENSATION; PHASE STUDIES; SYNTHESIS

Citation Formats

Guthrie, S.E., Thomas, G.J., Bauer, W., and Yang, N.Y.C. Synthesis of alloys with controlled phase structure. United States: N. p., 1999. Web.
Guthrie, S.E., Thomas, G.J., Bauer, W., & Yang, N.Y.C. Synthesis of alloys with controlled phase structure. United States.
Guthrie, S.E., Thomas, G.J., Bauer, W., and Yang, N.Y.C. Tue . "Synthesis of alloys with controlled phase structure". United States.
@article{osti_350319,
title = {Synthesis of alloys with controlled phase structure},
author = {Guthrie, S.E. and Thomas, G.J. and Bauer, W. and Yang, N.Y.C.},
abstractNote = {A method is described for preparing controlled phase alloys useful for engineering and hydrogen storage applications. This novel method avoids melting the constituents by employing vapor transport, in a hydrogen atmosphere, of an active metal constituent, having a high vapor pressure at temperatures {approx_equal}300 C and its subsequent condensation on and reaction with the other constituent (substrate) of an alloy thereby forming a controlled phase alloy and preferably a single phase alloy. It is preferred that the substrate material be a metal powder such that diffusion of the active metal constituent, preferably magnesium, and reaction therewith can be completed within a reasonable time and at temperatures {approx_equal}300 C thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}