Philipp Nieke, Steve Matthews, Nicholas J. Rattenbury, John E. Cater

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-412

Thermal barrier coatings are attractive thermal protection materials for hypersonic vehicles. We study
Yttria-stabilized-Zirconia coatings on pure Titanium and their performance under heat fluxes relevant
to hypersonic flight. Coatings were successfully manufactured by air plasma spray, each consisting
of a bond coat and a top coat, made from NiCrAlY alloy powder and Yttria-stabilized Zirconia powder,
respectively. The predicted peak heat flux of a hypersonic vehicle is simulated with the help of a custom-
built Oxy-Acetylene torch apparatus. Coated and uncoated Titanium substrates are subjected to a cold
wall heat flux of 900 kW/m2 for 60 s. Yttria-stabilized-Zirconia coated specimens show no external
damage, and for some, performance metrics are about one third higher than for uncoated samples.

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In Categories: HiSST 2022
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