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Title: Synthesis of alloys with controlled phase structure

Abstract

A method 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 .apprxeq.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 .apprxeq.300 C. thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds.

Inventors:
 [1];  [1];  [1];  [2]
  1. Livermore, CA
  2. Lafayette, CA
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
872255
Patent Number(s):
US 5895518
Application Number:
08/636,369
Assignee:
Sandia Corporation (Livermore, CA)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
synthesis; alloys; controlled; phase; structure; method; preparing; useful; engineering; hydrogen; storage; applications; novel; avoids; melting; constituents; employing; vapor; transport; atmosphere; active; metal; constituent; pressure; temperatures; apprxeq; 300; subsequent; condensation; reaction; substrate; alloy; forming; preferably; single; preferred; material; powder; diffusion; magnesium; therewith; completed; reasonable; time; avoiding; undesirable; effects; sintering; local; compositional; inhomogeneities; segregation; formation; unwanted; phases; intermetallic; compounds; controlled phase; active metal; substrate material; vapor pressure; intermetallic compound; hydrogen storage; single phase; metal powder; novel method; hydrogen atmosphere; storage applications; phase alloy; metal constituent; vapor transport; intermetallic compounds; alloys useful; phase alloys; phase structure; metallic compound; controlled ph; /75/148/420/

Citation Formats

Guthrie, Stephen Everett, Thomas, George John, Bauer, Walter, and Yang, Nancy Yuan Chi. Synthesis of alloys with controlled phase structure. United States: N. p., 1999. Web.
Guthrie, Stephen Everett, Thomas, George John, Bauer, Walter, & Yang, Nancy Yuan Chi. Synthesis of alloys with controlled phase structure. United States.
Guthrie, Stephen Everett, Thomas, George John, Bauer, Walter, and Yang, Nancy Yuan Chi. Tue . "Synthesis of alloys with controlled phase structure". United States. https://www.osti.gov/servlets/purl/872255.
@article{osti_872255,
title = {Synthesis of alloys with controlled phase structure},
author = {Guthrie, Stephen Everett and Thomas, George John and Bauer, Walter and Yang, Nancy Yuan Chi},
abstractNote = {A method 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 .apprxeq.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 .apprxeq.300 C. thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}

Patent:

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