Method of producing a powder, powder, and multilayered ceramic capacitor using the same
    12.
    发明授权
    Method of producing a powder, powder, and multilayered ceramic capacitor using the same 失效
    使用该粉末,粉末和多层陶瓷电容器的方法

    公开(公告)号:US07744954B2

    公开(公告)日:2010-06-29

    申请号:US11384508

    申请日:2006-03-21

    IPC分类号: B05D7/00

    摘要: A core/shell structured powder different in composition between the inside the particle and the surface thereof before sintering, so that it is possible to sinter the powder at lower temperature and give a core/shell structured powder having a shell portion uniform in thickness after sintering; a multilayered ceramic capacitor having a longer lifetime, by preparing the multilayered ceramic capacitor by using a powder having a core/shell structure different in composition between the inside the particle and the surface thereof before sintering; and a method of producing a powder by synthesizing particles in the liquid containing a raw material, wherein particles different in composition at least between the inside the particle and the surface thereof are obtained by adding a composition to be incorporated as a component of the particles to the liquid during the synthetic process so that the composition of the liquid changes continuously or intermittently.

    摘要翻译: 在烧结之前,颗粒内部和表面之间的组成不同的芯/壳结构粉末,使得可以在较低温度下烧结粉末,并得到烧结后具有均匀厚度的壳体部分的芯/壳结构粉末 ; 通过在烧结之前通过使用具有与颗粒内部和其表面之间的组成不同的核/壳结构的粉末来制备多层陶瓷电容器,具有更长寿命的多层陶瓷电容器; 以及通过在含有原料的液体中合成颗粒来制造粉末的方法,其中至少在颗粒内部和其表面之间至少在颗粒内部和/或表面之间的组成不同的颗粒通过将作为颗粒的组分掺入的组合物添加到 在合成过程中的液体,使得液体的组成连续或间歇地变化。

    R-T-B system rare earth permanent magnet
    15.
    发明授权
    R-T-B system rare earth permanent magnet 有权
    R-T-B系稀土永磁铁

    公开(公告)号:US07311788B2

    公开(公告)日:2007-12-25

    申请号:US10675230

    申请日:2003-09-29

    IPC分类号: H01F1/057

    摘要: A sintered body with a composition consisting of 25% to 35% by weight of R (wherein R represents one or more rare earth elements, provided that the rare earth elements include Y), 0.5% to 4.5% by weight of B, 0.02% to 0.6% by weight of Al and/or Cu, 0.03% to 0.25% by weight of Zr, 4% or less by weight (excluding 0) of Co, and the balance substantially being Fe. This sintered body has a coefficient of variation (CV value) showing the dispersion degree of Zr of 130 or less. In addition, this sintered body has a grain boundary phase comprising a region that is rich both in at least one element selected from a group consisting of Cu, Co and R, and in Zr. This sintered body enables to inhibit the grain growth, while keeping the decrease of magnetic properties to a minimum, and to improve the suitable sintering temperature range.

    摘要翻译: 具有25重量%至35重量%的R(其中R表示一种或多种稀土元素,条件是稀土元素包括Y),0.5重量%至4.5重量%的B组成的烧结体,0.02重量% 至0.6重量%的Al和/或Cu,0.03〜0.25重量%的Zr,4重量%以下(不包括0)的Co,余量实质上为Fe。 该烧结体具有显示Zr的分散度为130以下的变异系数(CV值)。 此外,该烧结体具有包含富含选自Cu,Co和R中的至少一种元素的区域和在Zr中的区域的晶界相。 该烧结体能够在保持磁特性降低至最小的同时抑制晶粒生长,并且可提高合适的烧结温度范围。

    Method of producing a powder, powder, and multilayered ceramic capacitor using the same
    19.
    发明申请
    Method of producing a powder, powder, and multilayered ceramic capacitor using the same 失效
    使用该粉末,粉末和多层陶瓷电容器的方法

    公开(公告)号:US20060216512A1

    公开(公告)日:2006-09-28

    申请号:US11384508

    申请日:2006-03-21

    IPC分类号: B32B5/16 B32B19/00

    摘要: An object of the present invention is to make a core/shell structured powder different in composition between the inside the particle and the surface thereof before sintering, so that it is possible to sinter the powder at lower temperature and give a core/shell structured powder having a shell portion uniform in thickness after sintering. Another object of the present invention is to provide a multilayered ceramic capacitor having a longer lifetime, by preparing the multilayered ceramic capacitor by using a powder having a core/shell structure different in composition between the inside the particle and the surface thereof before sintering. The method of producing a powder according to the invention is a method of producing a powder by synthesizing particles in the liquid containing a raw material, wherein particles different in composition at least between the inside the particle and the surface thereof are obtained by adding a composition to be incorporated as a component of the particles to the liquid during the synthetic process so that the composition of the liquid changes continuously or intermittently.

    摘要翻译: 本发明的目的是在烧结之前使颗粒内部和表面之间的组成不同的芯/壳结构粉末,使得可以在较低温度下烧结粉末并得到芯/壳结构的粉末 烧结后的壳体厚度均匀。 本发明的另一个目的是提供一种具有更长使用寿命的多层陶瓷电容器,通过在烧结之前通过使用在颗粒内部和其表面之间具有不同组成的芯/壳结构的粉末来制备多层陶瓷电容器。 根据本发明的制造粉末的方法是通过在含有原料的液体中合成颗粒来制造粉末的方法,其中至少在颗粒内部和其表面之间的组成至少不同的颗粒通过添加组合物 在合成过程中作为颗粒的组分掺入液体中,使得液体的组成连续地或间歇地变化。