PREPARATION OF MOLYBDENUM SINGLE CRYSTALS BY ELECTRON-BEAM FLOATING-ZONE MELTING,

Abstract

The paper briefly describes the design and operation of a 1.5 kw electron-beam floating-zone melting unit. Using this unit molybdenum single crystals 4 mm in diam eter and 2 to 5 cm long were prepared, and the laboratory technique of preparing single crystals with controlled orientation was mastered. The molybdenum single crystals prepared showed no preferred orientation; microscopic examination disclosed a large number of terraces on the crystal surface (with step heights ranging from 0.000023 to 0.00063 cm), which were tentatively identified as evaporation terraces. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 10, 1964
Accession Number
AD0602629

Entities

People

  • Ch'i Li
  • Nai-pen Ming
  • Ts'un-yi Fan
  • Tuan Feng
  • Yu-shan Hsu

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Crystals
  • Electron Beams
  • Electrons
  • Evaporation
  • Melting
  • Molybdenum
  • Orientation (Direction)
  • Republic
  • Single Crystals
  • Zone Melting

Readers

  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy
  • Directed Energy - Pulsed-Laser Deposition
  • Microelectronics
  • Microelectronics - Graphene