| 发明名称 |
SPARK PLUG, BODY FITTING OF SPARK PLUG, AND METHOD FOR MANUFACTURING SPARK PLUG |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a spark plug superior not only in salt corrosion resistance but also in stress corrosion cracking resistance. <P>SOLUTION: The spark plug includes a body fitting covered with a compound layer including a nickel plating layer and a chromate layer. The chromate layer has a film-thickness of 2-45 nm, with the concentration of Cr element being 60 at% or less, and contains Ni other than Cr. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
| 申请公布号 |
JP2011187344(A) |
申请公布日期 |
2011.09.22 |
| 申请号 |
JP20100052451 |
申请日期 |
2010.03.10 |
| 申请人 |
NGK SPARK PLUG CO LTD |
发明人 |
NASU HIROTETSU;SATO AKIHITO;KODAMA KAZUHIRO |
| 分类号 |
H01T21/02;C23C28/00;C25D11/38;F02P13/00 |
主分类号 |
H01T21/02 |
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