As the search for improved quality products continues, Neodymium magnets are taking center stage. Considered as a remarkable modern invention, that has several benefits and uses. Whether we know it or not, we are using these magnets in one form or another, and if you start looking around, it will not be difficult to find many devices using these magnets. Whether it is a headphone, computer hard disk or loudspeaker, these magnets are an essential part of it.
Neodymium magnets are an alloy of neodymium, boron, and iron. The chemical formula for this tetragonal crystalline structure is Nd2Fe14B. Irrespective of their size, neodymium magnets have enormous power. They have therefore bridged the gap, where ferrite and iron magnets have failed.
The origin of the word neodymium is from two Greek words “neo” and “didymos”. “Neo” means new while “didymos” means twin. The credit of its discovery goes to the Austrian inventor Baron Carl Auer Von Welsbach. However, it wasn’t until 1925 that scientists were able to isolate it in comparatively pure form. Neodymium block magnets are the strongest, commercially available magnets. And also have extraordinary higher levels of resistance against any process of demagnetization.
Monetarily speaking neodymium magnets have become a popular choice because of their comparatively lower cost. China accounts for a major share of total world production. Two different production processes are used for manufacturing these magnets. The first one is a sintered process that is used to produce about 90% of total production while the remaining part is manufactured using a bonded magnet process. Sintered magnets have comparatively higher magnetic strength than bonded magnets.
Another significant feature of small neodymium magnets is the higher Curie temperature. Curie temperature refers to a temperature where the magnetic power of a magnet is lost. Normally it ranges between 310 – 400゜C for both types of magnets. However, it is possible to increase it up to 800゜C by adding dysprosium and terbium.
There is no doubt about the fact that big neodymium magnets are one of the most useful inventions in the modern world. However, there are a few drawbacks that we should keep in mind while using them. Their Corrosive nature is one of the key disadvantages associated with these magnets. That is why one should exercise absolute caution while handling these magnets. Carelessness can result in snapping your fingers. Extra attention should be paid when working in high-temperature conditions because these magnets have a tendency to catch fire. For optimal results, low temperature should be maintained.
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