Evaluation of Electron-Emission Behavior for Detecting Carbon in Tungsten and Phenium

Abstract

In a program to develop methods of studying high-temperature metal reactions by means of changes in the thermal-electron-emission behavior when such reactions occur, the thermal-electron-emission behavior of rehenium-carbon and tungsten-carbon alloys was determined. It is shown that the presence of a very small amount of carbon on the surface of rhenium produces an easily detectable increase in the emission current. In the tungsten-carbon system two new emission states were detected. One of these shows emission of a much higher level than that of pure tungsten and appears to occur when the emitting surface is composed of WC. The other shows an emission level slightly lower than that for pure tungsten and appears to occur when the emitting surface is composed of W2C.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 24, 1963
Accession Number
ADA397095

Entities

People

  • Gordon B. Gaines
  • James B. Baker

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Base Metal
  • Contractors
  • Electron Emission
  • Electrons
  • Emission
  • Guard Rings
  • Heat Treatment
  • Heating
  • Materials
  • Measurement
  • Metals
  • Photoexcitation
  • Tungsten
  • United States
  • Work Functions
  • X Rays

Readers

  • Solar Physics
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics