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Coatings & Adhesives of Alnico Magnets

Coatings & Adhesives of Alnico Magnets

Alnico magnet is an alloy composed of aluminum, nickel, cobalt, iron, and other trace metal elements. Compared with other types of magnets, the disadvantage of AlNiCo magnets is that the coercivity is very low, the demagnetization curve is nonlinear, while their advantages are that they are high in remanence and low in temperature coefficient. Besides, another advantage of AlNiCo magnets is that they have good corrosion resistance, and usually do not need to be surface coated. But sometimes for aesthetics, the surface treatment of Alnico magnets is also performed. So in this article, let's take a brief look at the coatings & adhesives of Alnico Magnets.

Coatings & Adhesives of Alnico Magnets Coatings & Adhesives of Alnico Magnets

The Coatings of Alnico Magnets

AlNiCo magnets are well-known for their excellent oxidation and corrosion resistance, so they usually do not require protective coatings, electroplating, or other surface treatments. AlNiCo magnets are highly resistant to corrosion and will not corrode even if exposed to oil, solvents, gasoline, and alcohol. However, over time, since there may be a small amount of iron in Alnico magnets, they are prone to surface corrosion if exposed to water. In addition, Alnico magnets that have not been surface-treated will show signs of corrosion over time when exposed to strong alkaline solutions and inorganic acids. Although not widely regarded as necessary, the common coating used for Alnico magnets is the paint, which usually makes them look better because the original surface is dark gray if not mechanically polished. The color chosen is almost red! Similarly, Alnico magnets can also be easily coated with various metals, such as chromium or nickel. Stanford Magnets stocks a small amount of high-quality Alnico magnets with red epoxy paint. Our Alnico magnets are available in various shapes and sizes. All of the horseshoe magnets are manufactured from Alnico. A horseshoe is a bar magnet that is shaped so that both poles lie on the same plane. The horseshoe painted red is the iconic image that everyone sees in their minds when they think of magnets.

The Adhesives of Alnico Magnets

With the right adhesive, both magnetic and non-magnetic materials can be bonded to other surfaces, and a clean and grease-free surface can provide the best bonding surface. At Stanford Magnets, we recommend the following adhesives to be used with our Alnico magnets: 1. Araldite Rapid Adhesive 2. Loctite Industrial Strength Adhesive


Thank you for reading our article and we hope it can help you to have a better understanding of the coatings & adhesives of Alnico magnets. If you want to learn more about Alnico magnets, we would like to advise you to visit Stanford Magnets for more information. As a leading magnet supplier across the world, Stanford Magnets has been involved in R&D, manufacturing, and sales of magnets since the 1990s. It provides customers with high-quality permanent magnets like SmCo magnets, neodymium magnetsAlNiCo magnets, and ferrite magnets (ceramic magnets) at a very competitive price.

About the author

Cathy Marchio

Cathy Marchio is an expert at Stanford Magnets, where she shares her deep knowledge of magnets like Neodymium and Samarium Cobalt. With a background in materials science, Cathy writes articles and guides that make complex topics easier to understand. She helps people learn about magnets and their uses in different industries, making her a key part of the company's success.

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