利用自行研制的管流动态模拟试验装置，研究了碳钢在液/固双相流中的磨损腐蚀。结果表明：碳钢在含有5%河砂的双相流动3.5%NaCl溶液中，磨损腐蚀速度随流速的增加而显著增大，没有像单相流中出现磨损腐蚀速度显著降低的流速区段，其磨损腐蚀过程仍主要受阴极氧扩散控制。对碳钢施加阴极电流，由于抑制了腐蚀电化学因素，从而大幅度削弱了与流体力学因素间的协同效应，使碳钢的磨损腐蚀大大减轻。
The electrochemical behavior in erosion-corrosion of carbon steel in flowing liquid-solid double phase solution was studied with self-made flow loop simulating apparatus. The experimental results showed that erosion-corrosion rate in flowing double phase 3.5% NaCl solution containing 5% sand increases markedly with increasing flow velocity. But it was not found that the erosion-corrosion rate-decreased region which happened in flowing single phase solution existed. The erosion-corrosion process of carbon steel in flowing liquid-solid double phase solution is still controlled by cathodic oxygen diffusion process. Once cathodic current was impressed on carbon steel, the erosion-corrosion rate of carbon steel decreases abruptly because the corrosion electrochemistry factor is restrained and the synergism is weakened. It was verified that corrosion electrochemical factor plays a dominant role in erosion-corrosion.
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