Effects of flow, brass location, tube materials and temperature on corrosion of brass plumbing devices
Effects of flow, brass location, tube materials and temperature on corrosion of brass plumbing devices
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DOI：
10.1016/j.corsci.2011.01.060
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发表时间：
2011-05
影响因子：
8.3
通讯作者：
E. Sarver;M. Edwards
中科院分区：
文献类型：
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作者：
E. Sarver;M. Edwards
在一系列的管道回路实验中，研究了管道特定安装因素对黄铜腐蚀的影响。流速的增加会增加腐蚀速率，但不影响腐蚀类型。管道系统中铜管的存在增加了黄铜腐蚀对锌的选择性，除非在铜和黄铜之间进行电化学连接，在这种情况下，腐蚀变得更加均匀并加速。塑料管允许氧化剂（即，游离氯）在水中持续存在，增加黄铜暴露。此外，热水显着增加铅浸出黄铜。这些发现可能会为未来对黄铜腐蚀问题和管道设计的调查提供信息。
Effects of plumbing-specific installation factors on brass corrosion were investigated in a series of pipe-loop experiments. Increased flow velocity increased corrosion rates, but did not affect corrosion type. The presence of copper tubing in the plumbing system increased selectivity of brass corrosion for zinc, unless a galvanic connection was made between copper and brass, in which case corrosion became more uniform and was accelerated. Plastic tubing allowed oxidant (i.e., free chlorine) to persist in water, increasing brass exposure. Additionally, hot water significantly increased lead leaching from brass. These findings may inform future investigations into brass corrosion issues and plumbing designs.