The Effect of @entity32777 Formation on the Kinetics of XXXX Dissolution in Chloride Solution.

@entity575 @entity32777 @entity4202 @entity19022
The precipitation and growth of @entity19022 on @entity575 in physiological @entity4202 solution were investigated. @entity19022 was found to form at bottom of scratches on the surface which may be the less effective sites for diffusion or the favorable sites for heterogeneous nucleation. Patches of @entity32777 expanded laterally on the substrate until a continuous film formed. The ionic transport path through this newly formed continuous film was via spaces between @entity19022 patches. As the film grew, the spaces between @entity19022 patches closed and ion transport was primarily via micro-channels running through @entity19022 patches. The decrease of @entity19022 layer conductivity during film growth were attributed to the clogging of micro-channels or decrease in charge carrier concentration inside the micro-channels. Under thin @entity19022 layer, i.e. on the order of a micrometer, the dissolution of @entity575 substrate was under mixed activation-Ohmic control. Under thick @entity19022 layer, i.e. on the order of tens of micrometers, the dissolution of @entity575 substrate was mediated by the Ohmic resistance of @entity19022 layer.
