| 1. | Measurement methods of polarization resistance of copper alloy tubes for condenser
冷凝器铜合金管抗极化特性的测量方法 |
| 2. | Standard test method for conducting potentiodynamic polarization resistance measurements
动电势极化电阻测量的标准试验方法 |
| 3. | Based on practical application conditions , half - cell potential method , concrete resistance measurement , linear polarization resistance method and etc . 3
根据现场的实际应用情况，最常用的方法有半电池电位法、混凝土电阻率检测法、直流线性极化电阻法、交流阻抗法以及地质雷达法等。 |
| 4. | The results show that the data measured in laboratory have the same tendence with those measured in thermal power plant and the annual corrosion rate and polarization resistance and the anticorrosion performance of brass tubes can be evaluated effectively with ac impedance
结果表明，实验室数据与现场测试数据基本吻合，交流阻抗法可以提供凝汽器黄铜管在循环冷却水系统中的年腐蚀速率和极化电阻，帮助现场工作人员及时了解凝汽器黄铜管的腐蚀状况。 |
| 5. | In acid copper sulphate solution , the nc copper has a more negative corrosion potential which is decreasing with reducing the grain size and diffusion impedance was only found in the as - prepared and as - annealed at 180 ? nc copper due to the diffusion within the pores and channels on the surface . both the tafel plots and eis study demonstrated that the nc copper exhibits a higher corrosion current and lower polarization resistance than its mc couterpart
在酸性硫酸铜溶液中，纳米晶铜的腐蚀电位比微米晶铜要负，并且随着晶粒尺寸的减小而降低。 eis研究表明，未退火的和180退火的纳米样品中发现了扩散阻抗，与表面孔洞和通道中的扩散有关。极化曲线外推法和电化学阻抗研究都表明纳米晶铜的腐蚀电流比微米晶铜高，而极化电阻要低。 |
| 6. | A modified definition of polarization resistance calculated from the equivalent circuit of eis make its value dependent on the grain size . in anodic polarization test ( sweeing and stair - steps ) , the maximum ( critical ) current density increases while the passivation potential and breakdown potential lowers with the reduction of the grain size . fegsem images showed the grain growth and pitting corrosion of the nc copper surface , uniform corrosion in the mc copper surface and the broken passivation layer in both surfaces
在阳极极化实验(包括扫描法和台阶法)中，致钝电流虽晶粒尺寸减小而增大，而致钝电位和击穿电位都随着晶粒细化而降低。 fegsem照片发现了纳米晶铜的晶粒长大和孔蚀，微米晶铜表面的均匀腐蚀，和两种铜表面破碎的钝化膜。 |
