中文摘要：

设计了一套高速喷射腐蚀装置，喷射液流速度达150m/s，并且在喷射过程中可以精确控制喷射速度。该装置能与电化学工作站联机，进行电化学测试。根据流体力学理论，建立喷射流体力学模型，确立了喷射速度、喷射冲击力和表面切应力与喷射压力之间的关系，并采用实验方法验证了流体力学模型的正确性。利用失重法和电化学方法，进行了喷射腐蚀实验。结果表明，由喷射液流产生的冲击力对喷射腐蚀及其形貌有很大的影响，并且与表面切应力共同作用引起阳极极化过程改变，加速电化学腐蚀。采用冲击力描述喷射腐蚀规律较表面切应力更为合理。

英文摘要：

A high-speed impingement corrosion apparatus was manufactured and its jetting velocity reached maximal 150 m/s. This apparatus could be connected with electrochemical workstation for electrochemical test. Based on the hydrodynamic theory, an impingement hydrodynamic model was built and the relationships of jetting velocity, impingement force, surface shear stress with jetting pressure were separately studied and verified by experimental methods. The impingement corrosion of stainless steel was studied by mass loss and electrochemical methods. It was found that the impingement force induced by jetting flow had great influence on impingement corrosion and corrosion morphology, and that the combination of impingement force and surface shear stress changed the anodic polarization process and accelerated electrochemical corrosion. The impingement force parameter was more reasonable for describing impingement corrosion compared with surface shear stress.