【摘要】 利用专门改进的料浆罐式设备通过旋转失重和动、静态极化测试，系统研究了外加电位对０Ｃｒ１８Ｎｉ９Ｔｉ不锈钢在１０％Ｎ＿２ＳＯ＿４＋１５％刚玉砂（室温）介质中冲刷腐蚀行为的影响，并借助扫描电镜对冲刷腐蚀试样进行了表面形貌观察。结果表明，阴极保护能显著降低冲刷腐蚀速率，保护度可达７３．６％。施加阳极电位可出现３种效果：比自腐蚀电位稍正的１区，冲刷腐蚀速率显著提高；稳定钝化的Ⅱ区，冲刷腐蚀速率显著下降，保护度可达６４．５％；过钝化的Ⅲ区，产生晶间腐蚀，冲刷腐蚀速率再度升高。合适的阳极保护电位范围为：０－０．８Ｖ（ＳＣＥ）。更多还原

【Abstract】 he influence of applied potential on the erosion-cor-rosion behaviour of 0Cr18Ni9Ti stainless steel in 10%H₂SO₄+15% corundum sand（60#）acidic slurry was sys-tematically studied by using an improved slurry pot appara-tus through weight loss of rotation,dynamic and static po-larization tests.The surface morphology observation of ero-sion-corrosion specimens was made by using SFM,The re-sults showed that cathodic protection could significantlydecrease erosion-corrosion rate,and the cathudic protectionefficiency could reach 73.6%.There would be three effectswhen anodic potentials were applied onto the erosion-corro-sion behaviour:the erosion-corrosion rate increased sharplyin region I（a little more than other potential）;the erosion-corrosion rate decreased evidently in region Ⅱ（passiveregion）,and the anodic protection efficiency could reach 64.5%;the erosion-corrusion rate increased again in region Ⅲ（transpassive region）because of intergranular corrosion.The suitable potential range of anodic protection was 0-0.8V（SCE）.更多还原