In-situ xrd characterization of multilayered ceramic composite systems for hypersonic applications

Johnathan Hernandez, Quentin Fouliard, Caroline Anderson, Matthew Northam, Khanh Vo, Jared Clabaugh, Douglas Wolfe, Jonathan Aimer, Jun Sang Park, Ranajay Ghosh, Jihua Gou, Michacl Kinzel, Scetha Raghavan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Material systems exposed to extreme environments associated with hypersonic Might are subjected to oxidation and thermal strains which contribute to failure. Polymer Derived Ceramic Composites (PDCC), with a coating of Ternary Coating System (TCS) acting as Environmental Barrier Coatings (EBCs) to prevent oxidation, are a promising concept to meet higher temperatures. However, this layered architecture can be prone to inter-face failure due to thermal strain incompatibility between the layers. The fundamental understanding of oxidation content gained throughout thermal profiles is paramount for the development of these material systems. In this work, a multilayered material system is fabricated and subjected to high temperatures. The growth of oxide phases in the top layers is characterized using synchrotron X-ray diffraction (XRD) at environments which simulate service conditions. At 1100°C, the titanium aluminum nitride (TiAIN) top coat developed an aluminum oxide (α-Al2O3) layer due to high temperature oxidation. The evolution of the aluminum oxide layer is shown through the change of peak integrated intensity between the cubic (111) TiAIN and the rhombohcdral (012) Al2O3 with respect to temperature. Oxide growth of α-Al2O3 and t-titania (t-TiO2-rutile) is tracked throughout the thermal profile with respect to the TiAlN/TiN content. This unique in-situ characterization allows us to measure and better understand the mechanics of the high temperature multilayered systems that could be used for hypersonic leading edge applications.

Original languageEnglish (US)
Title of host publication23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624106002
StatePublished - 2020
Event23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020 - Montreal, Canada
Duration: Mar 10 2020Mar 12 2020

Publication series

Name23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020

Conference

Conference23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020
CountryCanada
CityMontreal
Period3/10/203/12/20

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science
  • Control and Systems Engineering

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