In the present study, a smart coating for light metal alloys was developed and investigated. Chemically activated
nanodiamonds (CANDiT) were electrophoretically deposited onto anodized aluminum alloy AA2024 substrates in order
to increase corrosion resistance, enhance bonding properties and establish a means of corrosion monitoring based on the
fluorescence behavior of the particles. In order to create stable aqueous CANDiT dispersions suitable for electrophoretic
deposition, mechanical milling had to be implemented under specific chemical conditions. The influence of the CANDiT
volume fraction and pH of the dispersion on the electrochemical properties of the coated samples was investigated.
Linear voltammetry measurements reveal that the chemical characteristics of the CANDiT dispersion have a distinct
influence on the quality of the coating. The fluorescence spectra as well as fluorescence excitation spectra of the samples
show that corrosion can be easily detected by optical means. Furthermore, an optimization on the basis of "smart" -
algorithms for the data processing of a surface analysis by the
laser-speckle-method is presented.
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