W、Mo、Ir、Re、Rh及其合金热电偶的特性和使用条件在文献中已作叙述。上列材料中W和Mo是最廉价的材料,故对W-Mo热电偶的兴趣也就最大。但由于各文献作者提供的分度特性相差太大,故使用这种热电偶就有一定困难。差异的原因与钨钼丝纯度不一和分度方法有关,故热电势的符号在分度曲线上的转变点在1100-1400℃温度范围内可能很不一致。在600-800℃温度时曲线具有最小值。本文提供了W-Mo热电偶的分度特 The characteristics and operating conditions of W, Mo, Ir, Re, Rh and their alloy thermocouples have been described in the literature. Of the above materials, W and Mo are the cheapest materials and therefore have the greatest interest in W-Mo thermocouples. However, due to the different indexing features provided by the authors of the documents, there is a certain difficulty in using such a thermocouple. The reason of the difference is due to the different purity and classification of tungsten molybdenum wire. Therefore, the transition point of thermoelectric potential sign on the indexing curve may be inconsistent in the temperature range of 1100-1400 ℃. The curve has a minimum at 600-800 ° C. This article provides the W-Mo thermocouple indexing