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Is Aluminum Magnetic?

The world today is quickly evolving and moving towards more technology. Even with industrialization, it is evident that technology will always be used as a tool. With this, items such as metals and aluminum are in high demand. Another thing that has boomed in market demand over the last decade is magnets. Here, we talk about what aluminum is, how magnets work, and if aluminum is magnetic.

Let’s talk about aluminum

First of all, let’s know more about aluminum. Aluminum is a silvery-white metal and the 13th element in the periodic table. Aluminum is the most prevalent metal on the globe, accounting for more than 8% of the Earth’s core mass, which is a shocking amount. It is also the third most common chemical element on the planet, behind oxygen and silicon.

Pure aluminum, on the other hand, does not occur in nature because it binds so readily with other elements. This is why people just recently became aware of it. Aluminum was produced for the first time in 1824, but it took mankind another fifty years to figure out how to generate it on a massive scale.

Aluminum sulfates are the most prevalent kind of aluminum found in nature. These minerals are created by combining two sulphuric acids: one based on an alkaline metal (lithium, sodium, potassium rubidium, or cesium) and one based on a metal from the periodic table’s third group, primarily aluminum. Aluminum, by the way, was called after aluminum sulfates, which were known as alumen in Latin.

Aluminum is typically used as an alloy since it is not particularly strong on its own. It has a low density, is non-toxic, has excellent thermal conductivity, is corrosion resistant, and can be cast, machined, and molded easily. It also doesn’t burn. It is the second most malleable metal and the sixth most ductile.

Where or how is aluminum used?

Aluminum is often regarded as the metal of choice for experts in the industrial business. This is because of its corrosion resistance, high strength, and low density. Aluminum is also non-toxic, making it excellent for any application involving food packaging. While aluminum has various applications, there are three major applications.

The first is in consumer products. Aluminum is ideal for packaged food since it is non-toxic. Aluminum is widely utilized in the packaging of food, pharmaceuticals, and drinks. It has no effect on the taste of the food; it retains, repels water, and increases the shelf life of food. Aluminum is also utilized in the manufacture of trays, foils, cookware, cutlery, refrigerators, and toasters.

Aluminum is also found in a variety of technological equipment. Smartphones, computers, and televisions are examples. Aluminum allows us to make our mobile gadgets lighter, sleeker, and more durable since it is harder than plastic and lighter than steel. Aluminum is also a good heat conductor, which helps to keep electrical gadgets cool.

The second is transportation. For decades, the transportation sectors have been increasing the quantity of aluminum used in all modes of transportation. This is due to its durability and lightweight. Trains may employ aluminum to improve fuel economy and minimize carbon emissions. Aluminum is used in the aviation sector to make airplane components and navigation devices. NASA also uses it on its spacecraft because of its lightweight and robustness under pressure. Aluminum has also had an influence on the vehicle sector. Lighter frames equate to greater fuel economy.

The third is electrical. Because of its low density, aluminum is one of the ideal materials for long-distance power lines. Because it is lighter and more ductile than copper, it is considerably simpler to shape into wires. Its corrosion resistance shields the wire from the elements. As a result, aluminum wiring has largely replaced copper wiring in transformers and nearly all modern wiring systems. It’s also found in fuse boxes, satellite dishes, sound systems, and home appliances.

Now, let’s talk about magnets

Let’s begin with magnets and how they work! Atoms are the smallest building blocks of matter. Electrons, which are charged particles, are found in every atom. The electrons that make up an atom’s nucleus, or core, spin like tops. Electrons, because of their mobility, act like miniature magnets, creating an electric current. The spinning of electrons around an atom’s nucleus generates a small magnetic field. Most materials’ electrons spin in random directions, and their magnetic forces cancel each other out. Moving electric charges produce magnetism. Magnetism is the force exerted by magnets when they attract or repel one another. In contrast to electric field lines, however, their directionality does not extend straight out from the source.

Every magnet has a north and south pole. The same poles repel each other, whereas opposing poles are drawn to one other. Magnets are made from a type of metal known as ferromagnetic metals. Nickel, iron, and cobalt are a few examples of these metals. These metals are unique in that they can be magnetized uniformly. Other metals that may be magnetic include specific alloys of rare earth elements. With that, three categories can be identified with magnets: permanent magnets, temporary magnets, and electromagnets. The primary distinctions between the three are their remanence and magnetic conductivity. Magnets that generate their own magnetic field are known as permanent magnets. They are also known as hard magnets and are said to have high remanence properties. Hard permanent magnets include neodymium magnets, which have the strongest magnetic properties of any permanent magnet. Soft magnets are those with low remanence. Their magnetic fields are reversible, and they may be easily magnetized and demagnetized. They are unable to generate or maintain their own magnetic field. Iron is an excellent soft magnet. Iron is easily attracted and removed, and may be dusted or flicked away from the magnetic field.

An electromagnet operates on a completely different mechanism. Winding a wire around a ferromagnetic material and putting an electrical current through it creates an electromagnet. This type of magnet only produces a magnetic field when the power is switched on. By spinning a magnet through a coiled wire, you may produce an electrical current. Certain materials can be magnetized by an electric current. The passage of electricity via a wire coil produces a magnetic field. However, as the electric current is switched off, the field around the coil vanishes. This interaction is also reversible or reciprocal.

So, now that we’ve learned about aluminum and magnets, it’s time to ask… Is aluminum magnetic?

The answer is: no, aluminum is not magnetic. Magnets are not attracted to aluminum either. Many common metals, including copper, brass, gold, silver, titanium, tungsten, and lead, are not ferromagnetic. They are not magnetic and are not pulled to magnetic fields. Due to the strength of the field, a sheet of metal may not be attracted to a refrigerator magnet, but its magnetism may be detected when high-quality magnets are hurled through thick aluminum pipes. Aluminum is a well-known example of a paramagnet.

Paramagnetic compounds have a similar composition to ferromagnetic materials. They both have unpaired electrons in partially filled energy orbitals, but the fundamental difference is that not all of their dipoles are aligned with the applied magnetic field. Magnetic fields created by misaligned dipoles are hampered. Because of this property, paramagnetic materials favor external magnetic fields to some extent. Simply said, they work like a weak magnet. When the external field is removed, these materials are weakly attracted to permanent magnets and revert to diamagnetism.

The triumph of randomized thermal energy over freshly encountered magnetic energy causes the variation in dipole alignment. We know this because, at low temperatures, paramagnetic materials simulate powerful magnets. Curie’s Law controls the relationship between temperature and a paramagnetic substance’s magnetic properties. At an extremely high temperature known as Curie’s temperature, every bit of a material’s magnetic prowess is erased. This phenomenon may be seen in ferromagnetic materials as well.

Oscar Cespedes of the University of Leeds in the United Kingdom, on the other hand, has developed a game-changing new technique that converts copper and manganese into magnets. Cespedes and his colleagues developed copper and manganese coatings for Buckyball carbon structures. When an external magnetic field was introduced and removed, the films retained 10% of the magnetic field. This new way of making MRI equipment is believed to be more biocompatible and environmentally friendly.

Nonetheless, if the primary aim of the metal is attraction or holding, it cannot be employed in conjunction with magnets.

Summary

Aluminum and magnets are two of the most used materials in the world at present. As technology and industrialization continue to move forward, it is expected for both of these items to be more in demand. And although they are in high demand, they do not go well together if it comes to attraction or sticking, or magnetism. All the more, this makes a point that if you decide or are interested in using either two for construction, industrialization, production, or simple projects, it is best to consult with a good, if not the best, supplier. ROBO Magnetic is a leading magnet supplier with various expertise and experience. ROBO Magnetic manufactures and exports custom neodymium magnets worldwide.

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ROBO Magnetic Product Team

We are the manufacturer with 16 years of experience in custom neodymium magnets.

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