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Applications of high thermal conductivity composites to electronics and spacecraft thermal design
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sharp, G. Richard Loftin, Timothy A. |
| Copyright Year | 1990 |
| Description | Recently, high thermal conductivity continuous graphite fiber reinforced metal matrix composites (MMC's) have become available that can save much weight over present methods of heat conduction. These materials have two or three times higher thermal conductivity in the fiber direction than the pure metals when compared on a thermal conductivity to weight basis. Use of these materials for heat conduction purposes can result in weight savings of from 50 to 70 percent over structural aluminum. Another significant advantage is that these materials can be used without the plumbing and testing complexities that accompany the use of liquid heat pipes. A spinoff of this research was the development of other MMC's as electronic device heat sinks. These use particulates rather than fibers and are formulated to match the coefficient of thermal expansion of electronic substrates in order to alleviate thermally induced stresses. The development of both types of these materials as viable weight saving substitutes for traditional methods of thermal control for electronics packaging and also for spacecraft thermal control applications are the subject of this report. |
| File Size | 557039 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920015106 |
| Archival Resource Key | ark:/13960/t6xw9b38j |
| Language | English |
| Publisher Date | 1990-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Conductive Heat Transfer Particulates Fiber Composites Mechanical Properties Thermal Expansion Thermal Protection Temperature Effects Graphite Packaging Spacecraft Environments Metal Matrix Composites Thermal Conductivity Fiber Orientation Temperature Control Heat Sinks Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
