| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of measuring polarization resistance capable of directly calculating a corrosion current, a method of monitoring a corrosion speed using the method of measuring polarization resistance, and a polarization resistance measuring device used for the method of measuring polarization resistance. <P>SOLUTION: A sample electrode 12 is made of a metal with which to measure a corrosion current. A counter electrode 14 is made of a solid having favorable electrical conductivity and a different equilibrium potential in a natural corrosion state from that of the metal. After the sample electrode 12 and counter electrode 14 are short-circuited for an extremely minute time, they are immediately opened and polarization resistance is obtained from voltage current response during this period therebetween. Using the polarization resistance thus obtained, a corrosion current can be calculated directly. Since polarization can be measured without significantly disturbing a natural corrosion state of the sample electrode 12, this method can be preferably used as a corrosion speed monitoring method capable of monitoring on a regular basis. <P>COPYRIGHT: (C)2012,JPO&INPIT |
