以往大多数腐蚀速度计是籍助直流极化测量,依据极化电阻原理工作的。近年来随着交流阻抗技术的发展,陆续出现了基于交流阻抗测量的腐蚀速度计,它们使用正弦波形的交流极化信号。这些新型的腐蚀计中,有的已经获得专利,有的已经商品化,预计很有进一步发展的前景。下面分别作一简要介绍。 In the past most of the corrosion rate meter is to help direct current polarization measurement, based on the principle of polarization resistance work. In recent years, with the development of AC impedance technology, corrosion rate gauges based on AC impedance measurement gradually appear, and they use a sinusoidal AC polarization signal. Some of these new corrosives have been patented, and some have been commercialized and are expected to further develop. The following were a brief introduction.