ELECTRON MICROSCOPE STUDIES OF THE SURFACE STRUCTURE OF WHISKERS GROWN FROM IRON CHLORIDE,

Abstract

In continuing the investigation of iron whiskers by electron microscopy, additional evidence was obtained concerning the mechanism of filamentary growth as it is reflected in surface structure. During the past year whisker specimens were produced under new types of growth conditions with ultra-pure ferrous chloride containing small amounts of cobaltous chloride at 700 C. Although individual whiskers within each specimen boat may vary somewhat, their surface topography appears to follow definite patterns. In most specimens, regardless of growth conditions, these typical patterns show variation in surface structure from the base to the tip areas. Detail in surface contours appears to be more uniform in whiskers which develop well-formed tips. When whiskers grown with the addition of cobaltous chloride could be broken, their fractured crosssection surfaces exhibited a shell and core structure similar to that found in whiskers which were previously studied in this program. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1963
Accession Number
AD0429183

Entities

People

  • Althea Revere

Tags

DTIC Thesaurus Topics

  • Chlorides
  • Electron Microscopes
  • Electron Microscopy
  • Electrons
  • Microscopes
  • Microscopy
  • Optical Analysis
  • Optical Equipment
  • Optical Magnification Devices
  • Topography

Readers

  • Materials Science and Engineering.
  • Reinforced Composite Materials
  • Theoretical Analysis.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene