In-situ phase diagram determination of the HfO2-Ta2O5 binary up to 3000˚C
November 12-16, 2017
Ceramic equilibrium phase diagrams have proven to be difficult to produce for materials above 1500 ˚C. We demonstrate that in-situ X-ray diffraction on laser heated levitated samples can be used to elucidate phase fields. In these experiments, solid spherical samples are suspended and rotated by a gas stream through a conical nozzle levitator, heated by a 400 W CO2 laser at Argonne National Labs beamline 6-ID-D.
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Scott J. McCormack, Richard Weber, Sergey Ushakov, Alexandra Navrotsky, and Waltraud M. Kriven, "In-situ phase diagram determination of the HfO2-Ta2O5 binary up to 3000˚C" in "Composites at Lake Louise 2017", Eric Duoss, Lawrence Livermore National Laboratory, USA Waltraud M. Kriven, University of Illinois at Urbana-Champaign, USA Eds, ECI Symposium Series, (2017). http://dc.engconfintl.org/composites_all_2017/1