动态与静态纯腐蚀对定量研究材料冲刷腐蚀交互作用的影响

分别测定了不锈钢和碳钢静态与动态纯腐蚀失重率、冲刷腐蚀失重及其电化学行为。研究了静态与动态纯腐蚀失重率对材料冲刷腐蚀交互作用失重率的影响。实验表明：（1）动态纯腐蚀比静态纯腐蚀更能反映材料在液固两相流中冲刷腐蚀交互作用的本质；（2）本实验条件下。T8钢动态纯腐蚀失重率是静态纯腐蚀失重率的2倍以上。18－8不锈钢动态纯腐蚀失重率竟是静态纯腐蚀失重率200倍以上、静态交互作用失重是动态交互作用失重率的2倍以上。可见静态与动态纯腐蚀对定量研究材料冲刷腐蚀交互作用会产生很大的差异；（3）在腐蚀性浆料中，首先要保证材料具有一定的耐蚀性。其次再考虑提高材料的硬度和耐磨性。这样才能有效地提高材料的耐冲刷腐蚀性能。对不同的工况，必须同时兼顾材料的耐蚀性和耐磨性。

THE EFFECT OF DYNAMIC AND STATIC PURE CORROSION ON QUANTITATIVELY STUDYING THE INTERACTION BETWEEN EROSION AND CORROSION OF MATERIALS

The dynamic and static pure corrosion weight loss rates and electrochemical behaviors of stainless steel and carbon steel were determined separately. The effects of dynamic and static pure corrosion on the interaction between erosion and corrosion weight loss rate of material were studied. The experiment results are as follows: (1) Dynamic pure corrosion comparing with static pure corrosion can truthfully reflect the essence of the interaction between erosion and corrosion of materials in dual-phase fluid; (2) Under this test condition, the dynamic pure corrosion weight loss rate is over two times higher than the static one, so that the interaction weight loss rate calculated by the static pure corrosion is two times higher than that by the dynamic pure corrosion; (3) For material in acidic slurry the first important point is to ensure the corrosion resistance , and then to increase the hardness and wear resistance so as to increase the erosion-corrosion resistance effectively.