Abstract：In order to explore the reason that the electrolyte vacuum boiling electrodeposition process can significantly improve the surface quality and microstructures of deposited layers. This paper mainly focused on analyzing the correlated characteristics between cathode potential,electrode resistance and vacuum degree,cathode temperature when electrolyte is vacuum boiling. Experimental results showed that: the vacuum degree and the cathode surface temperature can significantly affect the cathode chronopotentiometry and interelectrode resistance; decreasing the vacuum degree and the cathode surface temperature cause the cathode chronopotentiometry down,resulting in the cathode polarization degree increased,thereby improving the deposition surface quality and microstructure.

Keyword：vacuum boiling electrodepositon;chronopotentiometry;interelectrode resistance;mass transfer;