Selective determination of grain size in the electrodeposition of nanocrystalline nickel foils

There are many synthesis methods through phase space to produce nanostructures in metals. Condensation methods with rapid solidification are extensively explored from the gas or liquid phase. In particular, electrodeposition using pulsed currents favors continuous nucleation in the processing of structures to produce freestanding sheets as well as protective coatings for surfaces. An analysis approach used to develop the method for refining the structure and surface finish for nanocrystalline gold-copper alloy coatings relates the energy in each deposition pulse to the constituent grain size that forms during growth. Application is now pursued to evaluate a select determination of the grain size for nanocrystalline nickel foils synthesized by pulsed electrodeposition. The mechanical behaviors of hardness and rate-sensitivity of strength are assessed as function of grain size.

Automated summary

Various synthesis methods in phase space for nanostructure production in metals are explored, with rapid solidification condensation methods and pulsed current electrodeposition being emphasized. An analysis approach linking energy in deposition pulses to constituent grain size is applied to refine nanocrystalline coatings, with current research focusing on nickel foils. Mechanical behaviors such as hardness and rate-sensitivity of strength are evaluated in relation to grain size.