Patent ID: 11932957
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for forming a film of a metal on a substrate using a film forming apparatus,
the film forming apparatus including:
an anode;
a holder holding the substrate;
a solid-state electrolyte membrane disposed between the anode and the holder;
a housing defining a solution-housing space between the anode and the solid-state electrolyte membrane; and
a solution tank communicatable with the solution-housing space,

the method comprising the successive steps of:
(a) supplying a solution to the solution-housing space, the solution containing ions of the metal and an additive;
(b) increasing a pressure of the solution in the solution-housing space in a state where the solution-housing space is uncommunicated with the solution tank and the substrate held by the holder is in contact with the solid-state electrolyte membrane;
(c) decreasing the pressure of the solution in the solution-housing space; and
(d) forming the film of the metal on the substrate by applying a voltage between the anode and the substrate while the solution is circulated between the solution-housing space and the solution tank.