Making an Electromagnet Gather the necessary materials. To make an electromagnet, you will need insulated copper wire, a piece of metal with known iron content, a 12-volt battery (or other DC power supply), wire strippers/cutters, and electrical tape. The insulated copper wire needs to be thin enough to easily wrap around the metal and long [...]
Magnetize a Metal Using Striking Hammer Gather the necessary materials. To magnetize a metal using a hammer, you will need a compass, a hammer, and a piece of metal with some iron. These items can easily be purchased at a local hardware store. A metal alloy that doesn’t have iron in it is less likely [...]
Rubbing the Metal with a Strong Magnet Gather the necessary materials. To magnetize metal with this method, you just need a strong magnet and a piece of metal with known iron content. Metals without iron will not become magnetic. A strong magnet, such as neodymium, can easily be purchased online. Identify the North pole of [...]
How Does Magnetism Work? Magnetism is caused by the motion of electrical charges. All substances are made up of tiny particles known as atoms, which have even smaller particles that carry electrical charges, called electrons. In some substances—like iron, cobalt, and nickel—these electrons are mostly spinning in the same direction in relation to their atoms. [...]
The Guidance To Demagnetization Of Permanent Magnet Permanent magnets are materials that can be magnetized and remain magnetized indefinitely, but they can also lose their magnetism over time or under certain conditions. This process is called demagnetization. What Is Magnet Demagnetization? Magnetic demagnetization is the process of reducing or eliminating the magnetic properties of a [...]
How to Demagnetize a Magnet Magnets are useful for all kinds of things, whether we’re using them to stick things on the fridge or as an internal component of our phones. But have you ever been curious about how to demagnetize a magnet? As it turns out, there are a few ways to make a [...]
Electrolytic Hydrogen Decrepitation of NdFeB Magnets Electrolytic Hydrogen Decrepitation (EHD) is a method used for the fragmentation of NdFeB magnets. Here's how the process generally works: Preparation: The NdFeB magnets are first crushed or ground into coarse particles. These particles typically have a size ranging from several millimeters to a few centimeters. Electrolyte Bath: The [...]
Hydrogen Embrittlement Mechanism of NdFeB Magnet Hydrogen embrittlement in NdFeB (Neodymium Iron Boron) magnets can occur due to the presence of hydrogen atoms diffusing into the material's crystal lattice. This phenomenon can lead to reduced mechanical properties, such as decreased ductility and increased susceptibility to cracking or fracture. The mechanism typically involves the following steps: [...]
Hydrogen Embrittlement Failure of NdFeB Magnet Hydrogen embrittlement is a process by which hydride-forming metals become brittle, even fracture due to the penetration of hydrogen gas, and mechanical strength of relevant material will dramatically decrease because of hydrogen embrittlement. People have been studying how to prevent hydrogen embrittlement for over the past several decades. [...]
Magnetic Reversals - Scientists tell us that our magnetic poles have reversed in the past, and that they will again. The last one occurred 780,000 years ago. The average time period between reversals is 450,000 years, but there isn’t really any pattern, it is random. We are overdue by average only. Scientists don’t really know [...]
What are magnetic fields? Simply speaking a magnetic field is the region around a magnet. Magnets are made out of mineral called magnetide (or lodestone) which has the property of attracting iron. Scientists use magnetic field lines to represent these magnetic fields. The magnetic field lines of a simple magnet are shown in the picture [...]
Measuring Permanent Magnets Properties with Vibrating Sample Magnetometer Vibrating Sample Magnetometers (VSMs) are the most commonly employed tool for properties measurement of permanent magnet materials. They can be applied to magnet powder, thin films, anisotropic materials, magnetic recording materials, single crystals and liquid, etc.. They also allow for a broad temperature range from 4 K [...]