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    • 3. 发明授权
    • Method of producing composite oxide ceramics
    • 复合氧化物陶瓷的制造方法
    • US5795537A
    • 1998-08-18
    • US693608
    • 1996-08-07
    • Mamoru SennaSang-Hee ChoKenji Hamada
    • Mamoru SennaSang-Hee ChoKenji Hamada
    • B02C15/02C01G33/00C04B35/499C04B35/622C04B35/628
    • C04B35/622C04B35/499
    • The present invention provides a method of producing composite oxide ceramics which is capable of efficiently producing single-phase multi-component metal oxide ceramics having less impurity phase and excellent dielectric characteristics, by a simple process comprising sintering at a low temperature. The method has the steps of mixing a metallic hydroxide or hydrous gel with a plurality of metallic oxide powders to prepare a raw material mixture powder, activating the raw material mixture powder by mechanochemical treatment for grinding the raw material mixture powder with a degree of impact, which provides a centrifugal effect of 15 or more, to form a precursor, and synthesizing composite oxide ceramics by heat treatment of the activated raw material mixture powder (precursor).
    • 本发明提供一种复合氧化物陶瓷的制造方法,其能够通过包括在低温烧结的简单工艺,有效地制造杂质相少且介电特性较差的单相多组分金属氧化物陶瓷。 该方法具有以下步骤:将金属氢氧化物或含水凝胶与多种金属氧化物粉末混合以制备原料混合物粉末,通过机械化学处理活化原料混合物粉末,用于以一定程度的冲击磨碎原料混合物粉末, 其提供15以上的离心效果以形成前体,并且通过热处理活化的原料混合物粉末(前体)来合成复合氧化物陶瓷。
    • 7. 发明授权
    • Method for producing calcium phosphate powder
    • 磷酸钙粉末的制造方法
    • US06569396B1
    • 2003-05-27
    • US09701193
    • 2000-11-27
    • Shouhan YanagiMamoru SennaTetsuhiko IsobeManabu Kanayama
    • Shouhan YanagiMamoru SennaTetsuhiko IsobeManabu Kanayama
    • C01B2532
    • C01B25/32C01B25/324
    • The present invention provides a method of manufacturing calcium phosphate powder comprising the steps of preparing a mixed material by mixing calcium hydroxide (Ca(OH)2) powder and calcium hydrogenphosphate powder so that a molar ratio (Ca/P) of calcium to phosphor is set to a range of 1.45-1.72; conducting a mixing/milling treatment to the mixed material to cause a soft-mechanochemical compositing reaction thereby to prepare a calcium phosphate precursor; and conducting a heat treatment to thus obtained precursor at a temperature of 600° C. or more thereby to prepare calcium phosphate powder. According to the present invention, the manufacturing process is simple and the manufacturing cost can be remarkably reduced. In addition, fine calcium phosphate powder excellent in characteristics can be easily manufactured in a short time.
    • 本发明提供一种磷酸钙粉末的制造方法,其特征在于,通过混合氢氧化钙(Ca(OH)2)粉末和磷酸氢钙粉末,使钙与磷的摩尔比(Ca / P)为 设定在1.45-1.72的范围内; 对混合材料进行混合/研磨处理以引起软化机械复合反应,从而制备磷酸钙前体; 在600℃以上的温度下进行如此得到的前体的热处理,制作磷酸钙粉末。 根据本发明,制造过程简单,制造成本显着降低。 另外,能够在短时间内容易地制造出特性优异的细小的磷酸钙粉末。