Containerless processing of tungsten
Simultaneous electromagnetic levitation and electron-beam heating allow contaminationless melting of tungsten. Possible application for this technique is production of X-ray targets.
Engineering topics
Publications and source records attributed to Okress, E. C..
Simultaneous electromagnetic levitation and electron-beam heating allow contaminationless melting of tungsten. Possible application for this technique is production of X-ray targets.
Theoretical aspects of electrostatic control and design of gridded and conductive film bonded polymers, for spacecraft Thermo-optical blankets are considered. Brief commentaries relative to the salient features of the primarily developed facility for and characterization of said polymers is also considered.
An electromagnetic levitation apparatus incorporating an electron beam for auxiliary heating and melting has been developed for experiments on containerless vacuum purification and undercooled solidification of high melting materials. Stable levitation of 10-g specimens of molten tungsten has been achieved and a variety of containerless solidification experiments is being performed, including pure polycrystalline castings and single tungsten crystals grown from the undercooled levitated melts.