论文标题
由于镍扩散而导致热电发电机模块降解
Do thermoelectric generator modules degrade due to nickel diffusion
论文作者
论文摘要
该论文通过计算表明，镍的扩散即使在50年中也不会导致热电发生器模块的降解。在此过程中，我们使用复合材料理论来计算电阻电阻的电阻，我们自己的电触电电阻理论，以及从实验数据中近似热电材料特征的温度依赖性的方法。当使用上述方法时，假定在热电材料中游离载体散射的主要机制是它们在具有自由路径长度的声音子的变形潜力上散射，而自由路径长度与能量无关，但与温度成反比，并且声子散射的主要机制是声子散射的是与umklapp相吻合的声子散射，而不是umklapp的材料。因此，人们认为镍的作用仅降低到材料中自由电荷载体浓度的变化。
The paper shows by calculation that the diffusion of nickel even for 50 years does not lead to degradation of thermoelectric generator modules. In the process, we used the theory of composites to calculate the electrical contact resistance, our own diffusion theory of electrical contact resistance, as well as the method for approximating the temperature dependences of thermoelectric material characteristics from the experimental data. When using the above method, it was assumed that the main mechanism of scattering of free charge carriers in a thermoelectric material is their scattering on the deformation potential of acoustic phonons with a free path length independent of energy but inversely proportional to temperature, and the main mechanism of phonon scattering is phonon-phonon scattering with Umklapp, which is not affected by the nickel impurity in the thermoelectric material. Thus, it was believed that the role of nickel is reduced only to a change in the concentration of free charge carriers in the material.
