• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NACE annual conference & exposition >THE EFFECTS OF SHAFT GROUNDING ON THE CORROSION OF UNDERWATER HULLS
【24h】

THE EFFECTS OF SHAFT GROUNDING ON THE CORROSION OF UNDERWATER HULLS

机译：竖井地面对水下船体腐蚀的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A reference electrode data acquisition system has been developed that allows monitoring of hullpotentials at a number of locations around the underwater hull of a ship while at sea, without the needfor over-the-side cables or though-hull fittings. The underwater data loggers used in this system showedthat the ship to which they had been fitted was not completely protected from corrosion in the stern area,even when the ship was alongside. The loggers were also able to detect changes in configuration of thecathodic protection system that altered the current distribution around the hull of the ship. The dataloggers demonstrated that the steel hull was subject to accelerated corrosion as a result of galvaniccoupling to the bronze propellers through the shaft grounding systems when the cathodic protectionsystem was shut off. Measurements placed the extent of this galvanic corrosion at 73 kg per year whileat sea. This work highlighted the need for further experiments to determine the distribution of thegalvanic corrosion current around the ship hull.
机译：已经开发了一种参比电极数据采集系统，该系统可以在海上监测船舶水下船体周围多个位置的船体电位，而无需使用舷侧电缆或船体配件。该系统中使用的水下数据记录仪表明，即使安装在船尾，也无法完全保护安装在其上的船在船尾区域不受腐蚀。记录仪还能够检测到阴极保护系统配置的变化，从而改变了船体周围的电流分布。数据记录仪表明，当阴极保护系统关闭时，由于船体通过轴接地系统与青铜螺旋桨的电耦合，钢壳会加速腐蚀。测量结果表明，海上电腐蚀的程度为每年73公斤。这项工作强调了需要进行进一步的实验来确定船体周围的电腐蚀电流的分布。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号