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Processing of glass-ceramics from lunar resources
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fabes, B. D. Poisl, W. H. |
| Copyright Year | 1991 |
| Description | The goal is to fabricate useful ceramic materials from the by-products of lunar oxygen production processes. Specifically, the crystal nucleation and growth kinetics of ilmenite-extracted lunar regolith were studied in order to produce glass-ceramics with optimal mechanical, thermal, and abrasion resistant properties. In the initial year of the program, construction and calibration of a high temperature viscometer, used for determining the viscosity of simulated lunar glasses was finished. A series of lunar simulants were also prepared, and the viscosity of each was determined over a range of temperatures. It was found that an increase in the concentration of Fe2O3 decreases the viscosity of the glass. While this may be helpful in processing the glass, Fe2O3 concentrations greater than approximately 10 wt percent resulted in uncontrolled crystallization during viscosity measurements. Impurities (such as Na2O, MnO, and K2O) in the regolith appeared to decrease the viscosity of the parent glass. These effects, as well as those of TiO2 and SiO2 on the processability of the glass, however, remain to be quantified. |
| File Size | 296456 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910015067 |
| Archival Resource Key | ark:/13960/t17m56165 |
| Language | English |
| Publisher Date | 1991-04-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Crystal Growth Nucleation By-products Crystallization Glass Viscometers Ceramics Regolith Silicon Dioxide Oxygen Production Lunar Rocks Titanium Oxides Lunar Resources Reaction Kinetics Iron Oxides Ilmenite 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 |
