Failure Analysis on Leakage of Brass Condenser Tube in Thermal Power Plant

2018 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

材料科学;无线电电子学;计算机科学

Wang, Yunan^1,2 ; Wang, Tianpeng^1 ; Sun, Mingcheng^1

State Grid Liaoning Electric Power Research Institute, Shenyang

110006, China^1

Liaoning Dongke Electric Power Co. Ltd., Shenyang

110179, China^2

关键词: Chemical composition analysis;    Corrosion failure analysis;    Dezincification corrosion;    Energy spectrum analysis;    Internal surfaces;    Metallurgical examination;    Power plant condensers;    Thermal power plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/439/5/052005/pdf
DOI  :  10.1088/1757-899X/439/5/052005

来源: IOP

【 摘 要 】

The corrosion failure analysis of the brass tube in a power plant condenser was conducted by the methods of chemical composition analysis, macro morphology inspection of the leakage point, metallurgical examination, scanning electron microscope and energy spectrum analysis etc. The results indicated that the failure of the brass tube was due to the erosion of the internal surface. The zinc content in the etching pits decreased obviously and dezincification corrosion could be classified. Some suggestions for anti-corrosion measures of the brass tubes were put forward.