Kinetic Metallization (KM) successfully deposited an oxidation resistant NiCrAlY coating on to GrCop-84 rocket liners for NASA – Glenn Research Center. A CuCrAl bond-coat helped to mitigate the formation of Kirkendall voids due to increased diffusion across the NiCrAlY/GrCop-84 interface. This is attributed to the metallurgical bond nature of KM deposited coatings. The below as-sprayed micrograph shows the fully-dense nature of the KM coating deposited on to a copper substrate. Note that the copper was not grit-blasted prior to deposition.
Coating:
NiCrAlY
Thickness:
0.001"-0.050"
Fully Dense:
>99%
