Accession Number : ADB048384

Title :   Charging Control Satellite Materials. Part 1.

Descriptive Note : Interim rept. Aug 78-Oct 79,

Corporate Author : GENERAL ELECTRIC CO PHILADELPHIA PA SPACE DIV

Personal Author(s) : Schmidt, Ronald E.

Report Date : MAR 1980

Pagination or Media Count : 82

Abstract : Thin film coatings of indium oxide (IO) and indium tin oxide (ITO) on thin sheets of FEP Teflon and Kapton are evaluated as thin conductive transparent coatings. Deposition parameters necessary to optimize the coating surface resistance, solar absorptivity and stability are discussed in detail. Materials are coated over 30 cm square areas by reactive magnetron sputtering to achieve reproducible uniform coatings. Uniformity, deposition rate, coating thickness, oxygen partial pressure, insitu RF and DC biasing, and chamber conditioning are examined in detail. The charge control properties of the IO and ITO coated polymers are evaluated and demonstrated in a facility which provide a multiple energy electron radiation environment with energies up to 30 KeV at current densities in excess of 2nA/sq cm. (Author)

Descriptors :   *SYNCHRONOUS SATELLITES, *CONTROL, *MAGNETOSTATICS, *CHARGED PARTICLES, *ELECTRON ENERGY, *MATERIALS, SHEETS, COATINGS, THIN FILMS, POLYIMIDE RESINS, TETRAFLUOROETHYLENE RESINS, POLYMERIC FILMS, SOLAR RADIATION, ABSORPTION, OPTICAL PROPERTIES, STATIC LOADS, INDIUM COMPOUNDS, TIN COMPOUNDS, PARTIAL PRESSURE, DEPOSITION, THICKNESS, TRANSPARENCE.

Subject Categories : Plastics
      Nuclear Physics & Elementary Particle Physics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE