{
  "$type": "site.standard.document",
  "description": "There is provided a spark plug which exhibits improved resistance to high-temperature oxidation of an electrode, and improved resistance to spark-induced erosion of, improved resistance to oxidation of, and improved joining reliability of a tip joined to the electrode. A spark plug (1) has spark…",
  "path": "/patents/991902",
  "publishedAt": "2013-04-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C22C19/05",
    "NGK SPARK PLUG CO [JP]"
  ],
  "textContent": "There is provided a spark plug which exhibits improved resistance to high-temperature oxidation of an electrode, and improved resistance to spark-induced erosion of, improved resistance to oxidation of, and improved joining reliability of a tip joined to the electrode. A spark plug (1) has spark members (31) and (41); each of the spark members (31) and (41) has a weight of 1.5 mg or more; and a center electrode (5) and a ground electrode (27) contain Ni as a main component, C in an amount of 0.005% by mass to 0.10% by mass, Si in an amount of 1.05% by mass to 3.0% by mass, Mn in an amount of 2.0% by mass or less, Cr in an amount of 20% by mass to 32% by mass, and Fe in an amount of 6% by mass to 16% by mass.",
  "title": "SPARK PLUG"
}