How to Increase the Strength of an Electromagnet Electromagnets work just as well as permanent magnets. In fact, they are even more useful, because you can turn them on and off. You'll find electromagnets in hard drives, speakers and even in sophisticated equipment like MRI machines. You obviously need a stronger electromagnet for a particle [...]
Electromagnetic Induction Voltage applied to a conductor creates a magnetic field around that conductor. It is possible to reverse this process and for a magnetic field to generate a voltage in a conductor. For this to occur, there must be some relative motion between the conductor and the magnetic field. Electromagnetic induction takes place whenever [...]
Commonly Used Soft Magnetic Core Iron Powder Core Permalloy Powder Core Iron-Silicon-Aluminium Powder Core Magnetic powder core is a kind of soft magnetic material made by mixing and pressing ferromagnetic powder and insulating medium. Ferromagnetic particles are very small (0.5-5 micron used at high frequencies) and are separated by non-magnetic insulating film materials. Therefore, on [...]
Electromagnetism & Magnetism Applications Magnetism and moving electrons are closely related to each other. The three phenomena pertaining to electromagnetism are: Moving electric charges produce magnetic fields. Magnetic fields exert forces on moving electric charges. Changing magnetic fields in the presence of electric charges cause electrons to flow In 1820, Danish physicist Hans Oersted noted [...]
Magnetism as an Energy Source: Understanding Magnetic Force This article will discuss magnetic fields and electromagnetism. An invisible force occurs between two magnets when they are brought close to each other. This force may be an attraction force that pulls the magnets together or a repulsion force that pushes them apart. See Figure 1. Magnetic [...]
What are Magnetic Forces? Magnetic forces act upon magnetic objects or charged particles moving through a magnetic field. They are affected by the strength of the magnetic field, the total charge of a particle, and its speed and direction. Permanent magnets have their molecular structures aligned during formation so that they will attract certain types [...]
Standards and Regulations for Neodymium Magnet Use Though neodymium magnets have a strong magnetic field, they are very brittle and require special handling. Several industrial monitoring agencies have developed regulations regarding the handling, manufacture, and shipping of neodymium magnets. A brief description of a few of the regulations is listed below. Standards and Regulations for [...]
What are the Properties of a Neodymium Magnet? The main characteristic of neodymium magnets is how strong they are for their size. The magnetic field of a neodymium magnet occurs when a magnetic field is applied to it and the atomic dipoles align, which is the magnetic hysteresis loop. When the magnetic field is removed, [...]
Surface Coating Technology Increases the Life of NdFeB Magnets At present, China's rare earth NdFeB production has formed an industrial system, and the output has accounted for more than 80% of the world's total output. However, China's production of high-end NdFeB products is lack of competitiveness, which has become a bottleneck restricting the development of [...]
Custom Magnetic Assemblies Magnetic assemblies are made of permanent magnets and metal housings so the magnetic circuits are altered in order to get specific magnetic characteristics or increase the durability of the magnets. The permanent magnet used to make the magnetic assembly could be any kinds. The most common ones are neodymium magnets and ceramic [...]
Grade of Samarium Cobalt Magnet, Grade of SmCo Magnet Material Grade Remanence Coercive Force Intrinsic Coercive Force Max. Energy Max Working Temp. abbr Br HcB HcJ (BH) max Tw. unit kGs kA/m KOe kA/m KOe KJ/m3 MGOe ℃ Sm1Co5 YX-16 8.1-8.5 620-660 7.8-8.3 1194-1830 15-23 110-127 14-16 250 Sm1Co5 YX-18 8.5-9.0 660-700 8.3-8.8 1194-1830 15-23 [...]
Grade of AlNiCo Magnet Grade MMPA Remanence Coercive Force Max. Energy Curie temperature Max Working Temp. Temperature Coefficient of Br Temperature Coefficient of Hcj abbr Br Hcb (BH) max Tc Tw. T.C.α(Br) T.C.α(Hcj) unit mT / Gs kA/m / Oe kJ/m3 / MGOe ℃ ℃ %/℃ %/℃ LNG10 ALNICO3 600/6000 44/550 10/1.25 750 550 -0.02 -0.03~-0.07 [...]