RESEARCH AND DEVELOPMENT ON STANDARDIZATION OF OBJECTIVE TESTS FOR MICA AND MICA-LIKE MATERIALS SUITABLE FOR ELECTRON TUBE SPACERS.

Abstract

An investigation aimed at developing and standardizing objective tests for mica, and mica-like materials, suitable for use in electron tubes, is completed. It is found that reliable and reproducible tests for the electrical properties, and the gas-content property of these materials are possible. Of all materials tested, synthetic mica is shown to have the lowest gas content. Phlogopite mica is shown, after appropriate heat treatment, to alter its properties in a direction which enhances its value as a tube spacer material. Other properties of mica, and of mica-like materials, such as optical axis and modulus of elasticity, are found to be reproducibly and reliably testable. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 13, 1962
Accession Number
AD0282259

Entities

People

  • Edward E. Pollak

Tags

DTIC Thesaurus Topics

  • Elastic Properties
  • Electrical Properties
  • Electron Tubes
  • Electrons
  • Heat Treatment
  • Materials
  • Modulus Of Elasticity
  • Phyllosilicates
  • Standardization

Readers

  • Materials Science and Engineering.
  • Software Engineering

Technology Areas

  • Microelectronics