NDLI: Modelling directional solidification (Document No: 19870019318)

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Modelling directional solidification (Document No: 19870019318)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Wilcox, William R.
Copyright Year	1987
Description	An improved understanding of the phenomena of importance to directional solidification is attempted to enable explanation and prediction of differences in behavior between solidification on Earth and in space. Emphasis is now on experimentally determining the influence of convection and freezing rate fluctuations on compositional homogeneity and crystalline perfection. A correlation is sought between heater temperature profiles, buoyancy-driven convection, and doping inhomogeneities using naphthalene doped with anthracene. The influence of spin-up/spin-down is determined on compositional homogeneity and microstructure of indium gallium antimonide. The effect is determined of imposed melting - freezing cycles on indium gallium antimonide. The mechanism behind the increase of grain size caused by using spin-up/spin-down in directional solidification of mercury cadimum telluride is sought.
File Size	4245719
Page Count	118
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870019318
Archival Resource Key	ark:/13960/t3130s06c
Language	English
Publisher Date	1987-08-01
Access Restriction	Open
Subject Keyword	Materials Processing Grain Size Gallium Antimonides Directional Solidification Crystals Aerospace Environments Indium Antimonides Temperature Profiles Convection Freezing Naphthalene Space Commercialization Homogeneity Mathematical Models Microstructure Crystal Structure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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