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本文对电阻合金的两个主要电学参量作了数学物理的讨论。对过去所导出的电阻温度系数α是剩余电阻率ρ′的函数α=f(ρ′)进行了推广,得出在相同温度条件下,一组同一成分的电阻合金样品,在同一温度下,其温度系数α是那些对晶体中机械缺陷程度呈现敏感的物理量θ的函数α=f(θ)。据此,实现了时间上比标准方法快千余倍的α快速测试方法。电阻合金不稳定的原因,被认为是晶体中存在的机械缺陷导致原子的扩散所致。对于一个给定的合金样品,导出应用高温(120～130℃)T 处理后,预测电阻长期变化率的快速法所需延续的时间,比在恒温(20℃)T_c 时自然放置后再予以测量的标准方法所需延续的时间要短exp(ε/(KT)-(ε_c)/(KT_c)倍。
In this paper, we discuss the two main electrical parameters of resistive alloy mathematically and physically. In the past, the resistance temperature coefficient α derived is a function of the residual resistivity ρ ’, α = f (ρ’) is generalized to obtain the same temperature conditions, a group of the same resistance alloy samples, at the same temperature, The temperature coefficient a is a function of the physical quantity θ that is sensitive to the degree of mechanical imperfections in the crystal α = f (θ). As a result, an α rapid test method that is more than a thousand times faster than the standard method is achieved. The reason for the instability of the resistive alloy is believed to be caused by the diffusion of atoms due to mechanical defects in the crystal. For a given alloy sample, the time required to predict the long-term rate of change of resistance after high-temperature (120-130 ° C) T treatment is extended is measured after it is naturally placed at a constant temperature (20 ° C) T_c The standard method requires a short exp (ε / (KT) - (ε_c) / (KT_c) times shorter.