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    • 3. 发明专利
    • Steel having excellent corrosion resistance and corrosion fatigue resistance, and its surface treatment method
    • 具有优异耐腐蚀性和耐腐蚀性的钢铁及其表面处理方法
    • JP2007023337A
    • 2007-02-01
    • JP2005206977
    • 2005-07-15
    • Nhk Spring Co Ltd日本発条株式会社
    • SUZUKI TAKESHIONO YOSHIKIIUMI KAZUYA
    • C23C22/08
    • C23C22/20
    • PROBLEM TO BE SOLVED: To provide a steel having excellent corrosion resistance and corrosion fatigue resistance without hydrogen embrittlement or degradation of the material strength, and its surface treatment method in which a treatment work can be easily performed at low cost.
      SOLUTION: In the steel having excellent corrosion resistance and corrosion fatigue resistance, a film is deposited on the surface of the steel, the ratio of the Al atom number to the total atom number of Fe, C, Al, P and O and Si, Mn and Cr which are selectively added thereto is ≥0.5% in the means composition of the film, and the Al atom number in the mean composition of the film is larger than the Al atom number in the mean composition of the steel before the surface treatment.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种具有优异的耐腐蚀性和耐腐蚀疲劳性而不会产生氢脆性或材料强度劣化的钢,以及能够以低成本容易地进行处理的表面处理方法。 解决方案:在具有优异的耐腐蚀性和耐腐蚀疲劳性的钢中,在钢的表面上沉积膜,Al原子数与Fe,C,Al,P和O的总原子数的比例 选择性添加的Si,Mn,Cr为0.5%以上,膜的平均组成中的Al原子数大于前述钢的平均组成中的Al原子数 表面处理。 版权所有(C)2007,JPO&INPIT
    • 7. 发明专利
    • Magnetic marker and its manufacturing method
    • 磁标记及其制造方法
    • JP2003308576A
    • 2003-10-31
    • JP2002112549
    • 2002-04-15
    • Nhk Spring Co Ltd日本発条株式会社
    • KURIHARA TATSUYAONO YOSHIKIFURUTA EIJIRO
    • G08B13/24
    • PROBLEM TO BE SOLVED: To provide a magnetic marker causing a sharp magnetic pulse and miniaturized further. SOLUTION: A fine wire 2 having wire diameter ϕ70 μm-110 μm and a tissue in which a primary arm 3 of dendrite is oriented to an axis X by less than 10° is manufactured of a magnetic material having Fe as a main component and including Si by gas melt spinning method. The fine wire 2 is drawn (skin pass) so that the residual diameter ratio becomes 85-98%. When an alternate magnetic field exceeding a coercive force is applied thereto, the magnetic marker 1 composed of the fine wire 2 causes a sharp magnetization inversion, a large Barkhausen discontinuity characteristics, or the magnetic pulse. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供引起尖锐磁脉冲的磁性标记并进一步小型化。 解决方案:具有线径φ70μm-110μm的细线2和将枝晶的主臂3定向为X轴小于10°的薄片由以Fe为主的磁性材料制成 组分并通过气体熔融纺丝法包括Si。 细线2被拉伸(皮肤通过),使得残留直径比为85-98%。 当施加超过矫顽力的交替磁场时,由细线2构成的磁性标记1引起急剧的磁化反转,大的巴克豪森不连续特性或磁脉冲。 版权所有(C)2004,JPO