Patent ID: 8288927

Claim:
A spark plug ( 20 ) comprising: a center electrode ( 24 ) and a ground electrode ( 22 ), at least one of said electrodes ( 22 , 24 ) including a core ( 26 ) formed of a copper (Cu) alloy and a clad ( 28 ) formed of a nickel (Ni) alloy covering said core ( 26 ), said Cu alloy including, in weight percent of said Cu alloy, Cu in an amount of at least 98.5 weight percent and at least one of Zr and Cr, and said Ni alloy including, in weight percent of said Ni alloy, Ni in an amount of at least 90.0 weight percent and at least one of a Group 3 element, a Group 4 element, a Group 13 element, chromium (Cr), silicon (Si), and manganese (Mn).