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Magnets are special objects with countless applications. Magnetism has become an essential part of our modern-day lives. Our society would look entirely different if magnetism didn’t exist. However, this combination of nature and technology does have its vulnerabilities. In this article, we’ll discuss the question: Do magnets suffer from corrosion? Or, in other words, can magnets get rusty?

In the world of magnetism, we distinguish between two different kinds of magnets. There are permanent magnets and electromagnets. Permanent magnets are magnetic by nature and will remain so to varying extents. Electromagnets rely on a power supply in order to exhibit a magnetic field. In our discussion about corrosion, we focus on permanent magnets. We talk about the causes of corrosion and what you can do to prevent your magnets from becoming rusty.

It is necessary to avoid rust on a magnet. Oxidation (another word for the reaction creating rust) can impair the functionality of a magnet. Additionally, rusty magnetic products lose their durability. Because of corrosion, magnetism that could have lasted for decades can already start to show signs of weakening after a few years.

Causes of rust on a magnet

Moisture will lead to rust on a neodymium magnet. Does your magnet get exposed to rain or condensation? In time, it will be unavoidable for signs of oxidation to show on the product. Depending on the situation, this could be within days, weeks, months, or even years. Fishing magnets are constantly used in water and might therefore be susceptible to rust.

Water can be seen as an accelerator of the corrosion process. Water contains so-called electrolytes. These are forms of salt creating an underwater environment in which the chemical reaction of oxidation is enhanced. Especially salty water accelerates the process even more. So, using a magnet in bodies of salt water seems like a bad idea.Most magnets are covered with a coating. The absence of a proper coating leaves the product vulnerable, which may lead to corrosion. Does your product have a coating? In that case, you usually don’t have to fear anything.

What options do manufacturers have to avoid corrosion?

It is easy to prevent magnets from becoming rusty. It all starts with the manufacturer. They can ensure that the magnet is properly coated as we mentioned above. This prevents corrosion for the most part. When purchasing a magnet that will come into contact with water, always check whether a coating is applied.

What options do you have to avoid corrosion?

You can protect your magnet by keeping your magnet dry. This means that you will have to store your magnet in a dry place where no moisture can get to it. Fishing magnets, for instance, will inevitably get wet, but we recommend drying them well directly after use.

Moreover, it is recommended to thoroughly check your magnets from time to time. Are there visible traces of rust? Please take immediate action by removing the rust. This can be done with a cleaning agent, water, and a soft brush.

Corrosion on fishing magnets

How about fishing magnets? These magnets are made of neodymium and are being used to be thrown into bodies of water. Usually, these products don’t show any signs of corrosion, as most of them come with a high-quality coating. However, it is still advisable to check this when buying fishing magnets. A decent fishing magnet does have a coating. Additionally, the tips and tricks mentioned above can be applied to fishing magnets as well.

Generally speaking, magnet fishing and bodies of saltwater are a bad combination. Regardless of the coating, corrosion can still occur. To guarantee the durability of these kinds of products, manufacturers only recommend the use of fishing magnets in freshwater bodies.

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