MANUFACTURING METHOD OF SEPARATOR FOR FUEL CELL

摘要

A manufacturing method of a separator for a fuel cell is a method for forming a carbon coating film on a titanium substrate, which has a titanium oxide layer on a surface of the titanium substrate, by CVD. The method includes a step of making a state in which the titanium substrate, which has the titanium oxide layer on the surface of the titanium substrate, is placed into a vacuum atmosphere, an irradiation step of irradiating a surface of the titanium oxide layer of the titanium substrate with light having a wavelength of equal to or shorter than 390 nm before the carbon coating film is formed or while the carbon coating film is being formed, and a step of forming the carbon coating film on the surface of the titanium oxide layer that is irradiated with light in the irradiation step.

主权项

1. A manufacturing method of a separator for a fuel cell that is a method for forming a carbon coating film on a titanium substrate, which has a titanium oxide layer on a surface of the titanium substrate, by CVD, comprising:
making a state in which the titanium substrate, which has the titanium oxide layer on the surface of the titanium substrate, is placed into a vacuum atmosphere; irradiating a surface of the titanium oxide layer of the titanium substrate with light having a wavelength of equal to or shorter than 390 nm before the carbon coating film is formed or while the carbon coating film is being formed; and forming the carbon coating film on the surface of the titanium oxide layer that is irradiated with light at the time of the irradiating of the surface of the titanium oxide layer of the titanium substrate with light having a wavelength of equal to or shorter than 390 nm.