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    • 2. 发明专利
    • Composite copper particle
    • 复合铜颗粒
    • JP2011006770A
    • 2011-01-13
    • JP2009154400
    • 2009-06-29
    • Mitsui Mining & Smelting Co Ltd三井金属鉱業株式会社
    • SHIMIZU YOSHINORIFURUMOTO KEITAMINOWA HIKARI
    • B22F1/00B22F1/02B22F9/24
    • PROBLEM TO BE SOLVED: To provide copper-containing particles of which the heat shrinkability upon sintering is easily controlled.SOLUTION: The composite copper particles includes a plurality of inorganic oxide particles with an average particle diameter of 5 to 50 nm in copper-containing mother particle with an average particle diameter of 0.2 to 10 μm. The inorganic oxide particles are composed of the ones perfectly embedded in the vicinity of the surface of the mother particle and the ones embedded in the mother particle in a state where a part thereof is exposed to the surface of the mother particle. The inorganic oxide particles are contained in an amount of 0.1 to 5 wt.% to the whole of the composite copper particles.
    • 要解决的问题:提供易于控制烧结时的热收缩性的含铜粒子。溶解性:复合铜粒子在含铜母体中包含平均粒径为5〜50nm的无机氧化物粒子 平均粒径为0.2〜10μm的颗粒。 无机氧化物颗粒由在母体表面附近完全嵌入的母体颗粒附近以及其一部分暴露于母体表面的状态下嵌入母体颗粒中的无机氧化物颗粒构成。 无机氧化物粒子的含量相对于复合铜粒子的总量为0.1〜5重量%。
    • 3. 发明专利
    • Magnetite particle and manufacturing method thereof
    • 磁性颗粒及其制造方法
    • JP2005289671A
    • 2005-10-20
    • JP2004103497
    • 2004-03-31
    • Mitsui Mining & Smelting Co Ltd三井金属鉱業株式会社
    • MIWA MASAHIROMINOWA HIKARIMIYAKE KOJIMIYAZONO TAKESHISHIMAMURA HIROYUKI
    • G03G9/083C01G49/08C09C1/22C09C3/06G03G9/107
    • PROBLEM TO BE SOLVED: To provide a magnetite particle which has the high blackness degree in spite of the fineness and also has the high dispersibility and heat resistance.
      SOLUTION: The magnetite particle contains Si from the center of the particle through to the surface. The part from the center of the particle through to the vicinity of the surface has a Si concentration of an almost uniformity. Comparing the said part, the Si existing in the part of the surface of the particle is of relatively high concentration. A mole ratio [Si/Fe]
      c of Si to Fe from the particle center through to the vicinity of the surface is 0.002-0.15. A mole ratio [Si/Fe]
      s of Si to Fe at the particle surface part with a high concentration of Si, is 0.004-1. A thickness of the surface part corresponds to preferably 3-10% by mass in terms of an amount of Fe.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题:为了提供尽管细度而具有高黑度度并且还具有高分散性和耐热性的磁铁矿颗粒。

      解决方案:磁铁矿颗粒含有从颗粒中心到表面的Si。 从颗粒的中心到表面附近的部分具有几乎均匀的Si浓度。 比较所述部分,存在于颗粒表面部分中的Si具有较高的浓度。 从颗粒中心到表面附近的Si与Fe的摩尔比[Si / Fe]≤Sc为0.002-0.15。 具有高浓度Si的颗粒表面部分的Si与Fe的摩尔比[Si / Fe] SB 为0.004-1。 表面部分的厚度相对于Fe的量优选为3-10质量%。 版权所有(C)2006,JPO&NCIPI

    • 8. 发明专利
    • Iron oxide particle powder
    • 氧化铁颗粒粉
    • JP2009012987A
    • 2009-01-22
    • JP2007173152
    • 2007-06-29
    • Mitsui Mining & Smelting Co Ltd三井金属鉱業株式会社
    • MINOWA HIKARIMIYAKE KOJI
    • C01G49/08
    • PROBLEM TO BE SOLVED: To provide iron oxide particle powders not only having a moderate size level of agglomerated particles and less size variation but also having sharp particle size distribution of the agglomerated particles.
      SOLUTION: The iron oxide particle powders are characterized by having a highest frequency peak of diameter in the range of 0.05-0.5 μm in number particle size distribution measured by a laser diffraction scattering type particle size measuring device and having a cumulative frequency of 65-90% in number in a range of the highest frequency peak of diameter of ±20%.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供氧化铁颗粒粉末,其不仅具有中等大小的凝聚颗粒水平和较小尺寸变化,而且具有凝聚颗粒的尖锐的粒度分布。 解决方案:氧化铁颗粒粉末的特征在于,通过激光衍射散射型粒度测量装置测量的具有在0.05-0.5μm范围内的直径的最高频率峰值的数量粒度分布,并且具有累积频率 65-90%在最高频率峰值范围内的直径±20%。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Method for producing magnetite particle
    • 生产磁性粒子的方法
    • JP2006045030A
    • 2006-02-16
    • JP2004231622
    • 2004-08-06
    • Mitsui Mining & Smelting Co Ltd三井金属鉱業株式会社
    • MIWA MASAHIROMINOWA HIKARISHIMAMURA HIROYUKI
    • C01G49/08G03G9/083G03G9/087
    • PROBLEM TO BE SOLVED: To provide magnetite particles having improved heat resistance. SOLUTION: The method for producing the magnetite particles is characterized in that slurry containing magnetite particles is treated with a wet-type jet mill. The preferable ratio of the magnetite particles in the slurry is 10-500 g/L. When the slurry is passed through the inside of the jet mill, the preferable pressure loading on the slurry is 100-270 MPa. It is also preferable that the slurry is treated a plurality of times with the wet-type jet mill. The deterioration rate in the content of FeO in the magnetite particles subjected to the treatment becomes preferably 5-20% in the heat resistance test comprising exposing the particles to the atmosphere at 140°C for 30 min. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供具有改善的耐热性的磁铁矿颗粒。 解决方案:制造磁铁矿颗粒的方法的特征在于,用湿式喷射磨机处理含有磁铁矿颗粒的浆料。 浆料中磁铁矿颗粒的优选比例为10-500g / L。 当浆料通过喷射磨机的内部时,浆料上优选的压力载荷为100-270MPa。 还优选使用湿式喷射磨机将浆料多次处理。 在耐热性试验中,经过处理的磁铁矿颗粒中的FeO含量的劣化率优选为5-20%,包括在140℃下将颗粒暴露于大气中30分钟。 版权所有(C)2006,JPO&NCIPI