Kinetic Metallization: Coatings Once Thought Impossible
Nitinol
Shape Memory Alloy Properties
- Lower cost than HVOF
- Does not require surface prep
- Smooth bondline
- Superior as deposited finish
- Minimizes grinding/ polishing
- Useful on thin substrates
- Tunable hardnesss
- Ultrafine microstructure
Nitinol
Nitinol shape memory alloy (SMA) Kinetic Metallization depositions have obtained thicknesses exceeding 0.025” with as-sprayed densities of >99%. The micrographs above show the KM deposited Nitinol coating both in the as-sprayed and annealed conditions. Note that in the annealed condition shows boundaries visible from the original powder size. The visible grains are larger than the powder feedstock indicating diffusion and grain growth beyond the particle boundaries.