Based on the self-developed experimental?apparatus, the wet steam erosion experiments were performed?on polished steel specimens. Scanning Electronic?Microscope (SEM) and Atomic Force Microscope (AFM)?were used to identify the pit characteristics. The experimental?results showed that there was little damage on the?surface after being impacted by wet steam erosion. However,?when the micro-particles were added into the wet?steam, not only indentations and scratches but also craters?appeared on the eroded surface. Some characteristics of?crater, such as the circular shape and intergranular fractures,?make the damages distinguish from those of the?water-drop or micro-particle impact to solid wall, and they
are considered as the results of cavitation erosion.
Xu Wanli,Wang Jiadao,Qin Li,Chen Haosheng and Chen Darong
Tribology Letters