Loading...
Please wait, while we are loading the content...
Similar Documents
Indium antimonide crystal growth experiment m562. [skylab weightless conditions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gatos, H. C. Witt, A. F. |
| Copyright Year | 1974 |
| Description | It was established that ideal diffusion controlled steady state conditions, never accomplished on earth, were achieved during the growth of Te-doped InSb crystals in Skylab. Surface tension effects led to nonwetting conditions under which free surface solidification took place in confined geometry. It was further found that, under forced contact conditions, surface tension effects led to the formation of surface ridges (not previously observed on earth) which isolated the growth system from its container. In addition, it was possible, for the first time, to identify unambiguously: the origin of segregation discontinuities associated with facet growth, the mode of nucleation and propagation of rotational twin boundaries, and the specific effect of mechanical-shock perturbations on segregation. The results obtained prove the advantageous conditions provided by outer space. Thus, fundamental data on solidification thought to be unattainable because of gravity-induced interference on earth are now within reach. |
| File Size | 8513931 |
| Page Count | 80 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750006835 |
| Archival Resource Key | ark:/13960/t06x44b4j |
| Language | English |
| Publisher Date | 1974-09-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Crystal Growth Space Manufacturing Microgravity Applications Indium Antimonides Space Commercialization Interfacial Tension Skylab Program Weightlessness Tellurium 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 |
