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电阻温度系数与长期稳定性是仪器仪表用金属合金的两个主要电学参量。电阻温度系数愈低(除用于感温元件者外),电阻长期变化率愈小,则仪器仪表的精度就可以做得愈高。目前,国内已能生产出电阻温度系数小于5×10~(16)/℃,及电阻长期变化率小于5×10~(-6)/年的合金材料。尽管材料的综合性能好,但人们
The temperature coefficient of resistance and long-term stability are the two main electrical parameters of metal alloys used in instrumentation. The lower the temperature coefficient of resistance (except for the temperature sensing element), the smaller the long-term resistance change rate, the higher the accuracy of the instrumentation can be done. At present, China has been able to produce the temperature coefficient of resistance is less than 5 × 10 ~ (16) / ℃, and long-term resistance rate of change less than 5 × 10 -6 / year alloy material. Although the overall performance of the material is good, but people