This paper reports an attempt to speculate about corrosion resistance of T91 steel to extreme lead–bismuth eutectic (LBE) flow pattern. We build a modified dynamic corrosion apparatus permitting assemblages of oxidation, erosion or dissolution attack proceeding together within oxygen-saturated LBE. After corrosion test at 400℃ up to 1000 h, discrepancies of corrosion performance under various flow patterns were described by diffusion or mass transfer kinetics as well as erosion mechanics. In justification of dense Fe-O layer and cracks across oxide scales detected within typical erosion cavities, we put forward oxide growth stress enhanced by high surface curvature.

本文报道了一种尝试，以推测T91钢对极端铅-铋共晶（LBE）流动模式的耐蚀性。我们构建了一种改进的动态腐蚀设备，允许在氧饱和的LBE中一起进行氧化，腐蚀或溶解侵蚀。在400℃至1000小时的腐蚀试验后，通过扩散或传质动力学以及腐蚀机理描述了各种流动模式下的腐蚀性能差异。为了证明致密的Fe-O层和在典型腐蚀腔内检测到的氧化皮裂纹，我们提出了因高表面曲率而增强的氧化生长应力。