AN ELECTROCHEMICAL PROCESS OF MAKING THIN FILM OR FOIL OF METAL USING A LOW CURRENT DENSITY TECHNIQUE

摘要

The present invention relates to an electrochemical process of making thin film or foil of metal using a low current density technique, comprising the steps of preparing a specimen of a thin foil or a film; providing a twizzer having a conductive end for passing current and enabled to act as an anode; allowing the specimen to be gripped by the twizzer; providing an electrolyte bath filled with electrolyte corresponding to the type of foil or film being produced; disposing a mild steel sheet in the electrolyte bath which acts as a cathode; passing a current between the cathode and anode each being formed of dissimilar metals and alloys in the electrolyte, wherein the current density in the circuit is maintained low at the initial phase through restricting the voltage at a lower value which allows low local current density at first stage followed by setting of uniform current density, the specimen being periodically checked in an optical microscope followed by examination of the specimen when becomes transparent in a transmission electron microscope (TEM) to ensure development of the desired properties in the produced thin film or foil.