Accession Number : AD0742736

Title :   A New Method for Determining the Defect Structure of Non-Stoichiometric Materials.

Descriptive Note : Final rept. 1 Feb 67-31 Oct 71,

Corporate Author : MISSOURI UNIV ROLLA GRADUATE CENTER FOR MATERIALS RESEARCH

Personal Author(s) : James,William J. ; Lewis,Gordon

Report Date : 1971

Pagination or Media Count : 21

Abstract : The primary objective of the study was to explore the concept of isotope substitution as a tool for the precise determination of the metal-to-oxygen ratio in a metal oxide. A method was proposed that utilized substitution of either O(17) or O(18) for O(16) in a metal oxide. Algebraic manipulation of the mass and atom balance relations between a gas phase and a solid oxide indicated an experimental path that would lead to a determination of the oxide stoichiometry. The major effort in this work therefore, has been to reduce this method to practice. (Author)

Descriptors :   (*OXIDES, *GRAVIMETRIC ANALYSIS), LABELED SUBSTANCES, MOLECULAR WEIGHT, CRYSTAL DEFECTS

Subject Categories : Ceramics, Refractories and Glass
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE