Accession Number:

AD0739862

Title:

Investigation of the Behavior of High Temperature Materials.

Descriptive Note:

Final rept. Jul 68-Jul 71,

Corporate Author:

SYSTEMS RESEARCH LABS INC DAYTON OHIO

Report Date:

1971-10-01

Pagination or Media Count:

254.0

Abstract:

The report summarizes investigations of selected materials in three principal areas Defect structure of metal oxides at high temperatures Thermoluminescence of doped and undoped ThO2 and Oxidation of high-temperature materials. Extensive defect structure investigations, including weight and conductivity measurements, were performed on NiO and Sc2O3 and the results are presented with a discussion of relevant defect models. Detailed conductivity measurements on CoO were also made. In addition, conductivity data for 76 CeO2 - 20 ZrO2 4 Y2O3 are presented. The UV excited thermoluminescence of over 40 single crystals of undoped and rare earth doped ThO2 was measured. Presented here is a summary of the major conclusions of this investigation. The oxidation program concentrated on two materials - ZrB2 and ZrB220 vo SiC. Data is also presented on the effect of surface preparation methods on the oxidation of Ti-6A1-4V at 700C. In addition, oxidation data on several Ni-Cr-Y alloys 1000-1200C is included. Author

Subject Categories:

  • Physical Chemistry
  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE