NDLI: Novel amalgams for in-space fabrication of replacement parts

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Novel amalgams for in-space fabrication of replacement parts

Content Provider	NASA Technical Reports Server (NTRS)
Author	Van Hoose, James R. Grugel, R. N. Cochran, Calvin T.
Copyright Year	2012
Description	Being able to fabricate replacement parts during extended space flight missions precludes the weight, storage volume, and speculation necessary to accommodate spares. Amalgams, widely used in dentistry, are potential candidates for fabricating parts in microgravity environments as they are moldable, do not require energy for melting, and do not pose fluid handling problems. Unfortunately, amalgams have poor tensile strength and the room temperature liquid component is mercury. To possibly resolve these issues a gallium-indium alloy was substituted for mercury and small steel fibers were mixed in with the commercial alloy powder. Subsequent microscopic examination of the novel amalgam revealed complete bonding of the components, and mechanical testing of comparable samples showed those containing steel fibers to have a significant improvement in strength. Experimental procedures, microstructures, and test results are presented and discussed in view of further improving properties.
File Size	21002
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20120013883
Archival Resource Key	ark:/13960/t5s80c952
Language	English
Publisher Date	2012-03-11
Access Restriction	Open
Subject Keyword	Space Processing Space Manufacturing Indium Alloys Metal Fibers Mercury Amalgams Gallium Alloys Low Gravity Manufacturing Microgravity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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