Four low carbon steels with different Cr and Cu concentrations were prepared to investigate the effect of alloying elements on their corrosion behavior in 3.5% NaCl solution diluted hydrochloric acid and dilute sulphuric acid (pH=1.4-1.5) respectively. Electrochemical measurement and immersion test at room temperature characterized the corrosion behavior and evaluated the corrosion rate.
To investigate the role of Cr and Cu in steels in different solutions, four kinds of low carbon steel with different Cr and Cu concentrations were prepared to investigate the effect of alloying elements on their corrosion behavior. Solutions of 3.5 wt.% NaCl, diluted hydrochloric acid and diluted sulphuric acid (pH=1.4-1.5) were used.
An experimental method is described for the electrochemical and visual monitoring of erosion corrosion of copper and copper-nickel alloys in a synthetic sea water environment. An impinging jet cell was designed to accommodate electrochemical instrumentation and video microscopy equipment. A combination of electrochemical techniques includlng corrosion potential monitoring and impedance spectroscopy are utilized.
Corrosion can be a costly and annoying concern in a building's potable water
The forms of corrosion that can occur include:
1) General Corrosion
2) Pitting Attack
3) Concentration Cell Corrosion
5) Erosion Corrosion
6) Galvanic Corrosion
These corrosion forms can be avoided by a number of techniques including materials selection, system design and chemical treatment of the water.
Coatings, sometimes in conjunction with cathodic protection, have been used to mitigate the corrosion of storage tanks in building systems, but are not addressed in this paper.