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一前言镍铬铝铁合金(国外称为卡玛合金,以下简称卡玛合金)是目前国内外一种新型的精密高电阻材料,其特点是具有高的电阻率、低的电阻温度系数、且稳定性好等优点,可作为精密仪器仪表中精密绕线电阻及应变片。国内外历来通常采用精密锰铜电阻合金作为精密仪器仪表中的电阻元件。锰铜合金的稳定性好,但电阻率低(0.45欧·毫
Preface Nickel-chromium aluminum alloy (known as Kama alloy abroad, hereinafter referred to as Kama alloy) is a new type of precision high-resistance material at home and abroad, which is characterized by high resistivity, low temperature coefficient of resistance, and stable Good sex, etc., can be used as a precision instrument winding precision winding resistance and strain gauge. At home and abroad have always used precision manganese copper resistance alloy as a precision instrumentation in the resistance components. Manganese copper alloy stability, but low resistivity (0.45 ohm · milliliter