IRIDIUM-BASE ALLOYS AND THEIR BEHAVIOR IN THE PRESENCE OF CARBON

Abstract

Experimental results pertaining to the melting temperatures of selected iridium-osmium-rhodium, iridium-osmium-platinum, and iridium-rhenium- rhodium alloys are described. The eutectic temperatures of these alloys with carbon were measured, and in addition, the compositions of the respective eutectics were determined by metallographic examination of chemically analyzed alloys. A brief theoretical analysis of the data was also performed with the specific objective of establishing numerical relations between the melting point depression and properties of the melt as well as the component metals. The thermal expansion characteristics of several of the iridium-base alloys were measured up to 1800 C by high temperature, X-ray diffraction as well as by dilatometric techniques.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1966
Accession Number
AD0801951

Entities

People

  • D. P. Harmon

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Crystal Structure
  • Cubic Lattices
  • Diffraction
  • Fluids
  • Materials
  • Materials Laboratories
  • Measurement
  • Melting Point
  • Phase Diagrams
  • Rhodium Alloys
  • Solid Solutions
  • Thermal Expansion
  • Transitions
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Surface Engineering/Surface Coating Technology.