SEPARATOR FOR FUEL CELL

In an insulating coating formed at a portion that contacts a coolant of a separator for a fuel cell, blisters (water-filled bulges) are prevented from forming. In a structure in which a primer layer is formed on the surface of an anode side metal separator facing a gap for flowing coolant and an ins...

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Hauptverfasser: TERADA SATORU, OKONOGI DAISUKE
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In an insulating coating formed at a portion that contacts a coolant of a separator for a fuel cell, blisters (water-filled bulges) are prevented from forming. In a structure in which a primer layer is formed on the surface of an anode side metal separator facing a gap for flowing coolant and an insulating coating is formed on the primer layer, the value of (measured resistance value/calculated theoretical resistance value) of the primer layer is set to 95% or more. By satisfying this condition, the primer layer, having few fine voids, in which it is difficult for vapor components of the coolant to penetrate, can be formed, and blisters due to condensation of the vapor component of the coolant can be prevented from forming.