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 National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 350319
- Patent Number(s):
- 5895518
- Application Number:
- PAN: 8-636,369
- Assignee:
- Sandia Corp., Livermore, CA (United States)
- 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}
}