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    • 20. 发明申请
    • VOLTAGE NONLINEAR RESISTIVE ELEMENT
    • 电压非线性电阻元件
    • US20150255195A1
    • 2015-09-10
    • US14721025
    • 2015-05-26
    • NGK Insulators, Ltd.
    • Naokuni MURAMATSU
    • H01C7/10B22F3/105H01C17/00
    • H01C7/10B22F3/105B22F2003/1051B22F2999/00C22C1/0425C22C1/0491C22C9/00H01C7/108H01C17/00B22F2202/13
    • A voltage nonlinear resistive element 20 of the present invention includes a voltage nonlinear resistive material 30 composed of a copper alloy which has a two-phase structure containing a Cu phase 31 and a Cu—Zr compound phase 32 not containing a eutectic phase, and electrodes 21 and 22. The voltage nonlinear resistive material 30 may have a mosaic-shaped structure in which the Cu phase 31 and the Cu—Zr compound phase 32 are dispersed as crystals with a size of 10 μm or less in a cross-sectional view. The Cu—Zr compound phase 32 may be at least one of Cu5Zr, Cu9Zr2, and Cu8Zr3. Also, the voltage nonlinear resistive material 30 may be formed by spark plasma sintering of a Cu—Zr binary alloy powder. The voltage nonlinear resistive material 30 may contain 0.2 at % or more and 18.0 at % or less of Zr.
    • 本发明的电压非线性电阻元件20包括由铜合金组成的电压非线性电阻材料30,该铜合金具有包含Cu相31的两相结构和不含共晶相的Cu-Zr化合物相32和电极 电压非线性电阻材料30可以具有马赛克状结构,其中Cu相31和Cu-Zr化合物相32在截面图中以10μm或更小的尺寸分散为晶体。 Cu-Zr化合物相32可以是Cu5Zr,Cu9Zr2和Cu8Zr3中的至少一种。 此外,电压非线性电阻材料30可以通过Cu-Zr二元合金粉末的放电等离子体烧结形成。 电压非线性电阻材料30可以含有0.2原子%以上且18.0原子%以下的Zr。