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一、前言 随着现代科学技术的发展,高温测量和控制在工业、国防和尖端技术方面都具有重要的实际意义。长期以来高温测量和控制主要是采用不同类型的热电偶,其缺点是灵敏度差、成本高,使用复杂等。而使用半导体热敏电阻进行测温和控温基本上能克服上述缺点,由于信号比较强,在自动控制,远距离操作等方面更为合适。 能用于高温热敏电阻的材料,要求高温稳定、在使用温度范围内没有相变。目前达到实用阶段的材料并不多。国外常用的为各
I. Introduction With the development of modern science and technology, high temperature measurement and control have important practical significance in industry, defense and cutting-edge technologies. For a long time, high temperature measurement and control mainly use different types of thermocouples, the disadvantages of which are poor sensitivity, high cost, complicated use and the like. The use of semiconductor thermistor temperature and temperature control can basically overcome the above shortcomings, because the signal is relatively strong, automatic control, remote operation and so more appropriate. Materials that can be used in high-temperature thermistors require high temperature stability and no phase change over the operating temperature range. At present, there are not many materials that reach the practical stage. Commonly used abroad