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利用新近研制的双相流冲刷腐蚀激光多普勒实验装置，通过失重测试、表面形貌观察、局部流速流态测试和典型部位的电化学测试，研究了突扩管条件下碳钢ＡＩＳＩ１０２０在单相及含砂人工海水介质中的冲刷腐蚀机理．结果表明：冲刷腐蚀峰值发生在距突扩位置约２.５Ｄ的部位（Ｄ为粗管直径），与重附着点的位置相同．不同部位的冲刷腐蚀形貌有着明显差异，并与局部流速流态是相互对应的．冲刷对腐蚀的影响主要表现在流动对氧传质过程的促进上，而对阳极过程的影响相对较小．
Using newly developed two-phase flow erosion etching laser Doppler experimental device, through the weight loss test, the surface morphology observation, the local flow velocity fluid state test and the electrochemical test of typical sites, the carbon steel AISI1020 under the condition of single- Erosion and Corrosion Mechanisms in Sand and Artificial Marine Seawater. The results show that the peak value of erosion erosion occurs at about 2.5D from the sudden expansion (D is the diameter of the thick tube), which is the same as that of the heavy attachment point. Different parts of erosion erosion morphology has obvious differences, and the local flow velocity is corresponding to each other. The impact of erosion on corrosion is mainly manifested in the promotion of mass transfer of oxygen to the mass transfer process, while the impact on the anodic process is relatively small.