Characterization of Hot-Pressed MgO.

Abstract

Dense bodies of hot-pressed MgO are characterized for impurity or additive (LiF or NaF) contents and changes with subsequent annealing. As-9hot-pressed bodies from a variety of raw materials and pressing techniques are shown by ir, mass spectrometry, and weight-loss measurements to contain variable amounts of hydroxides, carbonates, and possibly bicarbonates averaging several hundred parts per million in total content. The gases released in the decomposition of these impurities can cause clouding and bloating of bodies on annealing subsequent to hot-pressing, depending on concentration, specimen size and integrity, and heating rates. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 16, 1971
Accession Number
AD0733981

Entities

People

  • Roy W. Rice

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Annealing
  • Body Weight
  • Carbonates
  • Decomposition
  • Heating
  • Hot Pressing
  • Hydroxides
  • Impurities
  • Mass Spectrometry
  • Materials
  • Measurement
  • Spectrometry
  • Spectroscopy

Readers

  • Analytical Chemistry
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.