November 8-12, 2015
Tantala (Ta2O5) has useful dielectric, optical, catalytic and chemical properties while hafnia (HfO2) has found applications as a high temperature structural ceramic. Tantala and hafnia ceramics have yet to be studied in detailed. During this study, the Ta2O5-HfO2 binary system was investigated using high temperature x-ray diffraction from room temperature to 1650˚C in air using synchrotron radiation. The crystal structures of Ta2O5, HfO2 and Hf6Ta2O17 were examined with their corresponding phase transformations and 3-D thermal expansions.
Waltraud Kriven, "In situ study of phase transformations and phase equilibria in the tantala and hafnia binary system" in "Composites at Lake Louise (CALL 2015)", Dr. Jim Smay, Oklahoma State University, USA Eds, ECI Symposium Series, (2016). http://dc.engconfintl.org/composites_all/111