Microstructural Features of Oxide Scales Formed on Zirconium Diboride Materials

  • H. C. Graham
  • H. H. Davis
  • I. A. Kvernes
  • W. C. Tripp
Part of the Materials Science Research book series (MSR, volume 5)


Both ZrB2 and ZrB2 + 20 v/o SiC have been oxidized in oxygen over the range 900° to 1500°C. The microstructural features of the oxide scales formed under these conditions are studied as a function of temperature and reaction time. Techniques used to characterize the oxide products include x-ray diffraction, scanning electron microscopy and electronprobe microanalysis. A glassy B2O3 is one of the oxidation products at temperatures below 1100°C, resulting in protective behavior. At higher temperatures the formation of an SiO2-base glass imparts additional protection to ZrB2 + 20 v/o Sic.


Oxide Scale Boron Oxide Glass Layer Columnar Growth Gravimetric Data 
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Copyright information

© Plenum Press, New York 1971

Authors and Affiliations

  • H. C. Graham
    • 1
  • H. H. Davis
    • 1
  • I. A. Kvernes
    • 1
  • W. C. Tripp
    • 2
  1. 1.Aerospace Research LaboratoriesWright-Patterson AFBUSA
  2. 2.Systems Research LaboratoriesDaytonUSA

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