论文部分内容阅读
在海洋中,阴极保护电流对于系统以外不远处的金属来说,是一种杂散电流。这种杂散电流是阴极保护系统自己生成的。自生杂散电流会严重腐蚀悬挂式阳极的金属吊杆。当保护试片和不保护试片相距很近时,会使腐蚀度和阴极保护效果测不准确。对于受阴极保护的钢结构附近的建筑物,设计时必须十分注意自生杂散电流的影响。防止方法有排流法和隔绝法,而最彻底的办法是在易发生电腐蚀的部位采用非导体。
In the ocean, the cathodic protection current is a stray current to the metal not far away from the system. This stray current is generated by the cathodic protection system itself. Self-generated stray current can severely corrode the suspended metal hanging rod anode. Corrosion and cathodic protection are inaccurate when the protective coupons and the unprotected coupons are closely spaced. For buildings near cathodically protected steel structures, care must be taken in designing the effect of self-generated stray currents. Prevent the method of drainage and insulation method, and the most thorough way is prone to electro-corrosion of non-conductive parts of the site.