Alumina sintered body and spark plug using the same
    95.
    发明授权
    Alumina sintered body and spark plug using the same 有权
    氧化铝烧结体和使用其的火花塞

    公开(公告)号:US09583916B2

    公开(公告)日:2017-02-28

    申请号:US15053256

    申请日:2016-02-25

    申请人: DENSO CORPORATION

    IPC分类号: H01T13/38 C04B35/00

    摘要: An alumina sintered body has a main phase made of alumina crystals, a first dispersed phase made of MgAl2O4 dispersed in the main phase, and a second dispersed phase made of SiO2 and/or CaO dispersed in the main phase. A content ratio of the main phase is within a range from not less than 98% to less than 98%. The alumina sintered body satisfies a relationship of 100×I2/I1≧5.5%, where I1 indicates a maximum peak height intensity derived from alumina, and I2 indicates a maximum peak height intensity derived from MgAl2O4 in a X-ray diffraction of the alumina sintered body. An area ratio of the second dispersed phase on a surface of the alumina sintered body is not more than 15.2%. A spark plug has a central electrode, a ground electrode and an insulator made of the alumina sintered body having the specific features previously described.

    摘要翻译: 氧化铝烧结体具有由氧化铝晶体制成的主相,分散在主相中的分散在MgAl 2 O 4中的第一分散相和分散在主相中的SiO 2和/或CaO制成的第二分散相。 主相的含有率在98%以上且小于98%的范围内。 氧化铝烧结体满足100×I2 /I1≥5.5%的关系,其中I1表示由氧化铝衍生的最大峰高强度,I2表示在氧化铝烧结体的X射线衍射中来自MgAl 2 O 4的最大峰高强度 身体。 第二分散相在氧化铝烧结体表面的面积比不大于15.2%。 火花塞具有中心电极,接地电极和由具有前述具体特征的氧化铝烧结体制成的绝缘体。

    ALUMINA SINTERED BODY AND SPARK PLUG USING THE SAME
    97.
    发明申请
    ALUMINA SINTERED BODY AND SPARK PLUG USING THE SAME 有权
    氧化铝烧结体和火花塞使用相同

    公开(公告)号:US20160254651A1

    公开(公告)日:2016-09-01

    申请号:US15053256

    申请日:2016-02-25

    申请人: DENSO CORPORATION

    IPC分类号: H01T13/38 C03C10/00

    摘要: An alumina sintered body has a main phase made of alumina crystals, a first dispersed phase made of MgAl2O4 dispersed in the main phase, and a second dispersed phase made of SiO2 and/or CaO dispersed in the main phase. A content ratio of the main phase is within a range from not less than 98% to less than 98%. The alumina sintered body satisfies a relationship of 100×I2/I1≧5.5%, where I1 indicates a maximum peak height intensity derived from alumina, and I2 indicates a maximum peak height intensity derived from MgAl2O4 in a X-ray diffraction of the alumina sintered body. An area ratio of the second dispersed phase on a surface of the alumina sintered body is not more than 15.2%. A spark plug has a central electrode, a ground electrode and an insulator made of the alumina sintered body having the specific features previously described.

    摘要翻译: 氧化铝烧结体具有由氧化铝晶体制成的主相,分散在主相中的分散在MgAl 2 O 4中的第一分散相和分散在主相中的SiO 2和/或CaO制成的第二分散相。 主相的含有率在98%以上且小于98%的范围内。 氧化铝烧结体满足100×I2 /I1≥5.5%的关系,其中I1表示由氧化铝衍生的最大峰高强度,I2表示在氧化铝烧结体的X射线衍射中来自MgAl 2 O 4的最大峰高强度 身体。 第二分散相在氧化铝烧结体表面的面积比不大于15.2%。 火花塞具有中心电极,接地电极和由具有前述具体特征的氧化铝烧结体制成的绝缘体。