Ancient Greeks were among the first people to encounter the substance which was eventually named lodestone. The magical properties of this captivating material couldn’t be explained. It took over two
Ferro fluid is a versatile liquid that becomes magnetized when exposed to a magnetic field. Prior to being magnetized it is a black oily substance, but is transformed into a
Steel balls were once produced in the West and European countries. Nowadays, most of these products are produced in the India and the Far East. It is common knowledge, however,
Many people are quick to overlook the little devices that have big functions such as strong magnets. Not only are magnets versatile but they come in many shapes, sizes, thicknesses,
Rare-earth magnets are the most powerful permanent magnets available and have been around since the 1970′s. They are created using alloys of several elements, including rare earth elements combined with a metal like nickel, iron or cobalt to create a more stable magnet.
Simply put the North Pole of the magnet points towards the North Pole of the Earth and the South Pole of the magnet points toward the South Pole of the Earth. This is because the Earth itself has a magnetic field created by the continuous movement inside the planet’s liquid core. The compass takes advantage of this property in order to guide sailors, mountaineers and others who require navigational assistance.
When one hears about the explosion in usage of rare earth magnets, it naturally makes you wonder how rare they are. Is the Supply of Rare Earth Magnets Running Low? The answer is a complex yes and no — they are not running low, but they are becoming more valuable and difficult to acquire.
The make up of magnets make it a bit tricky to use adhesives. Most stock magnets are plated in nickel. Nickel is a metal that is highly resistant to corrosive attack. This corrosion resistance prevents the metal from reacting with most chemicals that are commonly incorporated into adhesives to develop a bond between the adhesive and the substrate. In addition, when nickel is used for plating where it forms an extremely smooth and hard surface. All of those further reduce the ability of an adhesive to bond to the metal. Using the wrong adhesive and not preparing the surface of neodymium magnets will make it tough to glue it to any other material.
Neodymium magnets, also known as NdFeB or rare-earth magnets, are made from an alloy of neodymium, iron and boron. This is the alloy from which magnets in microphones, professional loudspeakers and computer hard drives are made. The magnets are made by sintering, a method of welding tiny particles of metal together by the application of heat. Any ‘holes’ present in a rare-earth magnet have not been drilled. The sintered mixture of metal was poured into a mold at the time of the magnet’s manufacture. Because of this, the magnets have a ‘ceramic’ quality. They are fragile and should be handled with care.
Neodymium Magnets have fascinated people from all walks of life for many years. Although the uses for the fields are well known, few people understand how to shield them. Listed below will be some facts on how to accomplish this task.
» Read more..
A magnetic field can be defined as the region surrounding the magnet that has the force of magnetism. It is also called a vector field, as the strength and direction of magnetism can be represented mathematically, with a line diagram. It is possible to measure a magnetic field, and such quantification of magnetism can reveal the magnet’s strength amongst other things.
Rare Earth magnets are popularly used for a number of applications. While they are most commonly used inside, many people have started to wonder if they can be brought outside and used there as well. While you may be able to get away with bringing your neodymium magnets outside for short periods of time, or keeping them outside if you live in the driest of deserts, the simple answer is no, you cannot generally use rare earth magnets outdoors.
Although most people do not possess the ability to magnetize a magnet at home, understanding how the process works can give you a better appreciation and understanding of your rare earth magnets. In fact, magnets are magnetized in a number of ways and knowing how it is done is an important part of understanding how each type of magnet works and why it works the way that it does.
There are two basic types of magnetization. Each type is based on, not only the method used to achieve the magnetization, but the direction of the magnetic current. Each type of magnet can perform a number of different functions. As you grow to understand the differences between standard magnetization and diametrical magnetization, you will see how some work best for some applications, and other work best for other applications.
» Read more..
The world of magnets and magnetization has fascinated both the young and old for ages. Since it was first observed, people have studied its effects and thought of hundreds of ways to use it. There have been a lot of uses found for magnets, but the types of magnets used surpass that number. There are those that are weak magnets and strong magnets. There are those that lose their magnetic properties over time and there are those that retain their magnetic properties. Two topics about magnets are of notable interest, the Neodymium Magnets – What Are the Different Ways to Magnetize a Magnet?