The corrosion behaviour and corrosion products of four kinds of low carbon steels in natural saline soil were studied by various testing methods and surface characterization methods.

The mathematical model of impedance response and the equivalent circuit model is determined based on electrochemical kinetics theory, and a method for calculating the kinetic parameters of the metal interface is presented.

The combined effect of salt and temperature on the corrosion behavior of X80 steel in silty soil was studied by microscopic and spectroscopic characterization techniques and electrochemical measurements.