| 摘要 |
A spark plug and a method of manufacturing same is provided a spark plug for an internal combustion engine comprising, a center electrode 2 , a ground electrode 3 is formed a spark discharge gap G with the center electrode 2 , a housing welded to the end portion 31 of the ground electrode 3 . The surface of the housing 4 is formed a plated layer 5 whose melting point is lower than the melting point of the housing 4 and is lower than the melting point of the ground electrode 3 . There is substantially no the plated layer 5 on a junction boundary face between the housing 4 and the ground electrode 3 . The burr including constituents of the plated layer 5 lies next to the junction boundary face 11.
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