Accession Number : AD0655917

Title :   THE STUDY OF THE GROWTH MECHANISMS OF ALLOY FILAMENTARY CRYSTALS (WHISKERS) GROWN FROM SOLIDS.

Descriptive Note : Final summary rept.,

Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF ENGINEERING

Personal Author(s) : Sines,George

Report Date : JUN 1967

Pagination or Media Count : 19

Abstract : In an attempt to discover the mechanism by which the transport of atoms occurs under extreme microscopic stress gradients, alloy filamentary crystals were grown from the solid plating subjected to lateral compression. Enrichment of one species in the filamentary crystal would be expected if diffusion were the controlling mechanism. X-ray lattice diffraction measurement of the atomic spacing of Pb-In and Sn-In alloys appears promising. Also electron microprobe appears promising if shape and size effects can be calibrated. Absolute composition measurements are still inconclusive but the variation of composition along several filamentary crystals was less than 1%. (Author)

Descriptors :   (*WHISKERS(CRYSTALS), *CRYSTAL GROWTH), TRANSPORT PROPERTIES, INDIUM ALLOYS, LEAD ALLOYS, TIN ALLOYS, STRESSES, X RAY DIFFRACTION, DIFFUSION, DISLOCATIONS, THEORY

Subject Categories : Metallurgy and Metallography
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE