US 7,482,083 B2
	Corrosion resistant coated fuel cell bipolar plate with filled-in fine scale porosities
Zafar Iqbal, Morristown, N.J. (US); Dave Narasimahan, Flemington, N.J. (US); James V. Guiheen, Madison, N.J. (US); and Timothy Rehg, Rancho Palos Verdes, Calif. (US)
Assigned to General Electric Company, Schenectady, N.Y. (US)
Filed on Sep. 03, 2003, as Appl. No. 10/605,035.
Application 10/605035 is a division of application No. 09/415466, filed on Oct. 08, 1999, granted, now 6,649,031.
Prior Publication US 2004/0106029 A1, Jun. 03, 2004
Int. Cl. H01M 2/00 (2006.01)

U.S. Cl. 429—34

26 Claims

11. A coated fuel cell bipolar plate comprising: a metal plate; an electrically conductive corrosion resistant coating formed over the metal plate, the coating including a top surface and porosities; and an electrically conductive overcoating formed over the electrically conductive corrosion resistant coating, the overcoating sealing some or all of the porosities at the top surface of the electrically conductive corrosion resistant coating, wherein the overcoating includes: a first layer of transition metal coated over the coating; and a second layer of amorphous graphite coated over the first layer.