Separator and method for manufacturing separator
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakashi Aisaka, Hitoshi Tanino
Life of this patent
Estimating the term…
Abstract
Provided are a low-price fuel cell separator with high corrosion resistance and a method for manufacturing the separator. The present disclosure relates to a fuel cell separator including a metal substrate and a titanium layer containing titanium formed on the metal substrate, and a method for manufacturing the separator. A ratio of a (100) plane to a sum of values obtained by dividing peak intensities of the (100) plane, a (002) plane, and a (101) plane derived from titanium in an X-ray diffraction analysis of a separator surface by respective relative intensities is a constant value or more.
Claims6
A fuel cell separator comprising:
- a metal substrate;
- and
- a titanium layer containing titanium formed on the metal substrate,
- wherein a ratio of a (100) plane to a sum of values obtained by dividing peak intensities of the (100) plane, a (002) plane, and a (101) plane derived from titanium in an X-ray diffraction analysis of a separator surface by respective relative intensities is 16.9% or more.
A method for manufacturing a fuel cell separator including a metal substrate and a titanium layer containing titanium formed on the metal substrate,
- wherein the titanium layer is formed on the metal substrate using a sputtering method under a condition of:
- (a) a UBM coil current value is 6.5 A to 10 A;
- or
- (b) a bias voltage value to the metal substrate is more than −700 V and −150 V or less.
Dependencies are inferred from the claim text.