galvanic corrosion

简明释义

电化腐蚀

英英释义

例句

1.During the inspection, we found signs of galvanic corrosion on the aluminum frame due to its contact with steel bolts, indicating 电化学腐蚀.

在检查过程中，我们发现铝框架上有电化学腐蚀的迹象，这是由于与钢螺栓接触所致，表明存在电化学腐蚀。

2.The maintenance team recommended replacing the corroded parts to avoid further galvanic corrosion, which could lead to serious 电化学腐蚀 issues.

维护团队建议更换腐蚀的部件，以避免进一步的电化学腐蚀，这可能导致严重的电化学腐蚀问题。

3.The engineer explained how galvanic corrosion occurs when two different metals are connected in an electrolyte, leading to 电化学腐蚀.

工程师解释了当两种不同金属在电解质中连接时如何发生电化学腐蚀，导致电化学腐蚀。

4.The metal parts of the boat were suffering from galvanic corrosion, which is 电化学腐蚀 caused by dissimilar metals in contact with seawater.

船的金属部件遭受了电化学腐蚀，这是由于与海水接触的不同金属之间发生的电化学腐蚀。

5.To prevent galvanic corrosion, we used a sacrificial anode on the pipeline, which acts as a 电化学腐蚀 protection.

为了防止电化学腐蚀，我们在管道上使用了牺牲阳极，它起到了电化学腐蚀保护的作用。

作文

Galvanic corrosion is a phenomenon that occurs when two different metals are in contact with each other in the presence of an electrolyte. This process can lead to significant material degradation, which is a critical concern in various industries such as construction, marine, and automotive. Understanding the mechanisms behind galvanic corrosion (电化学腐蚀) is essential for engineers and designers to prevent premature failure of structures and components.The basic principle of galvanic corrosion (电化学腐蚀) is rooted in electrochemistry. When two dissimilar metals are connected electrically and immersed in an electrolyte, one metal acts as an anode while the other serves as a cathode. The anode undergoes oxidation, losing electrons and corroding over time, while the cathode remains protected. This electrochemical reaction can be illustrated by the classic example of a copper-nickel connection in seawater, where copper may corrode more rapidly due to its position in the galvanic series.Several factors influence the rate of galvanic corrosion (电化学腐蚀), including the type of metals involved, the surface area ratio, and the conductivity of the electrolyte. For instance, if a small piece of zinc is attached to a large piece of steel, the zinc will corrode preferentially, protecting the steel from rusting. This principle is often utilized in cathodic protection systems, where a less noble metal is used to protect a more noble one.Prevention of galvanic corrosion (电化学腐蚀) can be achieved through several strategies. One effective method is to use insulating materials to separate dissimilar metals, thereby preventing direct electrical contact. Additionally, applying protective coatings or using sacrificial anodes can significantly reduce the risk of corrosion. In marine environments, for example, ships often employ zinc anodes to protect their hulls from galvanic corrosion (电化学腐蚀) caused by seawater.It is also crucial to consider the environment in which the materials will be used. Factors such as temperature, humidity, and the presence of salts can all affect the rate of galvanic corrosion (电化学腐蚀). Engineers must conduct thorough assessments and choose materials wisely to mitigate these risks. In some cases, the use of alloys that are specifically designed to resist galvanic corrosion (电化学腐蚀) can be beneficial.In conclusion, galvanic corrosion (电化学腐蚀) is a significant issue that can lead to costly repairs and safety hazards if not properly managed. By understanding the underlying principles and implementing effective prevention strategies, industries can protect their assets and ensure longevity. Awareness and education about galvanic corrosion (电化学腐蚀) should be prioritized in engineering curricula and professional training to equip future professionals with the knowledge needed to combat this pervasive problem.