Magnets are used in a variety of applications. They are all around us and can be found in different devices we use every day. Magnets are found everywhere starting from simple toys and household equipment to televisions and computers. Natural magnets called lode stones were used by our ancestors for curing different health conditions. The advancements in technology have made it possible to manufacture different types of magnets with varying strengths of magnetism and in different sizes and shapes.
Permanent magnets are the most commonly used magnets. These magnets retain their magnetism after being magnetised. There are a variety of permanent magnets manufactured using different metallic substances. The uses of the magnets in Brisbane depends on their composition and the magnetic field produced by them. The different types of permanent magnets are
- Neodymium Iron Boron
These are the strongest and most expensive magnets in Brisbane, manufactured using rare-earth magnetic materials. They possess high magnetic fields and are usually made in smaller sizes because a magnet with only a half-inch diameter can lift objects weighing several pounds. These magnets are also known as the NdFeB or NIB magnets.
- Samarium cobalt
These magnets in Brisbane are resistant to oxidation and can sustain in high temperatures. They possess high magnetic strength but low mechanical strength. They are also known as the SmCo magnets.
Alnico magnetsare made from a combination of aluminium, nickel and copper. These magnets can sustain in a good range of temperatures and can be degaussed easily. These magnets are manufactured using the casting or sintering techniques. They are available in a wide range of sizes and shapes.
- Ceramic or Ferrite
Ceramic magnets are strong and difficult to demagnetize. These magnetsare manufactured using the sintering technique. The Ferrite magnets tend to be brittle. They are easy to produce and hence moderately priced.
Magnets are available in a variety of shapes and sizes. Some of the commonly available shapes of magnets in Brisbane are, horseshoe magnet which is a U shaped magnet, bar magnet which is shaped like a rectangular bar and round magnet which is small in size and has a round shape with a hole at the centre.