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Magnetic Properties

/Tag:Magnetic Properties

LAMINATED MAGNET ASSEMBLY

LAMINATED MAGNET ASSEMBLY LAMINATED MAGNET ASSEMBLY is to cut the whole magnet into many small pieces of magnet, and then use specific glue to bond together. These small magnets are insulated from each other and enable to cut down electromagnetic eddy current. When the permanent magnet motor is running, the motor will generate harmonic and [...]

Understanding Magnetic Permeability

Understanding Magnetic Permeability Magnetic Permeability is a value that expresses how a magnetic material responds to an applied magnetic field. If a material's internal dipoles become easily oriented to an applied magnetic field, that material is regarded as being a high-permeability material. If the material's internal dipoles do not become easily oriented to an applied [...]

Magnetic anisotropy of FePt nanoparticles

Magnetic anisotropy of FePt nanoparticles ABSTRACT. Magnetic anisotropy of FePt nanoparticles - We carry out a systematic theoretical investigation of Magneto Crystalline Anisotropy (MCA) of L10 FePt clusters with alternating Fe and Pt planes along the (001) direction. The clusters studied contain 30 - 484 atoms. We calculate the structural relaxation and magnetic moment of [...]

Brief Introduction of Sintered Alnico Magnet

Brief Introduction of Sintered Alnico Magnet Alnico magnet has got a lot of attention after discovered by Tokushichi Mishima in 1931. Alnico magnet is still occupying the important position among the consumption structure of permanent magnet even this days due to its several advantages. Alnico magnet can be divided into sintered Alnico magnet and casting [...]

Magnet Thermal Aging

Magnet Thermal Aging, Thermal Degradation of Magnetics, Effect of thermal aging on magnet, magnet aging fixture, Thermal aging of melt-spun NdFeB magnetic powder What is magnet thermal aging? Even though we usually say “permanent magnet”, but magnets do not remain magnetism permanently. In general, permanent magnets are gradually demagnetized by the impact of heat variations. This [...]

Permanent Magnets: Systems and International Marketplaces

Permanent Magnets: Systems and International Marketplaces This Analysis report gives an up-to-day analysis of modern developments and present tendencies in the international long term magnet market place and quantifies the projected affect of equally inner and external forces that are affecting the global long term magnet market nowadays and will affect the industry for the [...]

Neodymium Magnets Use To Stick In The Safe Deposit Box

Neodymium Magnets Use To Stick In The Safe Deposit Box I believe most people have seen or used the safety deposit box, The market at present the conventional safety deposit box is divided into the mechanical, electronic, print, such as credit card, the low rate of mechanical safety deposit box has the opening of which, [...]

Magnetism Measurement

Magnetism Measurement General magnetic capacity measurement Magnetic Properties: Br, Hcb, Hcj, (BH)max, Hk, Ms, ?rec, Hk/ Hcj etc. The test instrument used is the Hysteresisgraph tester. Hcj value between 50 and 20,000 Oe can be measured. Magnetism Measurement Magnetic properties at high and low temperatures (-40 to 250 ℃): Properties tested at any [...]

Iron can melt, what happens when the magnet melts?

Iron can melt, what happens when the magnet melts? First, there are many kinds of magnets, such as neodymium-iron-boron magnets, alumino-nickel-cobalt magnets, ferrite magnets, etc., but these magnets are generally made by hand. There is no explanation here. We only talk about magnets that exist in nature. It is also a natural magnet. Natural magnets, [...]

Introduction to Magnetic Materials

Introduction to Magnetic Materials A magnetic material is a material that can react to a magnetic field in a certain way. It is called a magnetic material, and generally consists of a transition element such as iron, cobalt, nickel, and alloys thereof, which can directly or indirectly generate magnetism. Magnetic materials are generally classified into [...]

About Some Magnet Knowledge

About Some Magnet Knowledge Permanent magnet material: The permanent magnet material is magnetized by an external magnetic field and does not disappear. It can provide a stable magnetic field to the external space. There are four common metrics for NdFeB permanent magnets: Remanence (Br) units are Tesla (T) and Gauss (Gs) 1Gs = 0.0001T A [...]

What is Bonded NdFeB Magnets

What is Bonded NdFeB Magnets Bonded NdFeB Magnets are produced by melt spinning a thin ribbon of the Nd-Fe-B alloy. The ribbon contains randomly oriented Nd2Fe14B na no-scale grains. This ribbon is then pulverized into particles, mixed with a polymer and either compressed or injection molded into bonded magnets. Bonded magnets offer less flux than [...]

Magnetic Capacity Measurement

Magnetic Capacity Measurement 1. Magnetic capacity measurement a) Magnetic Properties: Br, Hcb, Hcj,(BH)max, Hk, Ms,μrec, Hk/ Hcj etc. b) The test instrument used is the Hysteresisgraph tester. c) Hcj value between 50 and 20,000 Oe can be measured. 2. Magnetic Properties at high and low temperatures (-40 to 250 ºC): Properties tested at any temperature [...]

Flexible NdFeB Magnets

Flexible NdFeB Magnets Characteristics: ● Good flexible properties, virtually no cracking, no chipping (No cracks on the magnet when 1 mm thick sheet was wrapped around 10 mm diameter mandrel). ● Highest magnetic properties, (BH)max come up to 80KJ/m3 in laboratory, the (BH)max (16~68KJ/m3 ) can be in mass production. ● Temperature capability -40 deg.C [...]

SIX Things to Know About Magnets

SIX Things to Know About Magnets Almost everyone knows these six basic facts about how magnets behave: 1, A magnet has two ends called poles, one of which is called a north pole or north-seeking pole, while the other is called a south pole or south-seeking pole. 2, The north pole of one magnet attracts [...]

Advanced permanent-magnet generator for gearless wind turbines

Advanced permanent-magnet generator for gearless wind turbines Main target of the PERMAGWIT project was the design, manufacturing and testing of an extremely silent, efficient and reliable 1.5MW direct drive generator system for gearless pitch-controlled wind turbines. A prototype of the generator, the electronic power converter and a suitable turbine nacelle should be developed within this [...]

Magnetic Material Classification

Magnetic Material Classification, The classification of magnetic material According to the magnetic  material under action of external magnetic field, the material is divided into anti magnetic material, anti ferromagnetic material, magnetic material. The latter two are strong magnetic material, magnetic material is widely used in science and technology. Magnetic materials classification generally divided into metallic [...]

Injection molded Neodymium magnets

Injection molded Neodymium magnets Besides sintered magnets and bonded magnets categories, injection molded magnet is one of the more important developments in magnetic materials, it has opened a new world of application opportunities. Similar to plastic injection molding, magnet injection molding process is by mixing the magnetic powder together with polymer binder, heated in the [...]

Injection Molded Ferrite Magnets

Injection molded ferrite magnets Injection molded Ferrite is another molding process of magnet category. Compared to injection molded NdFeB, the difference of injection molded Ferrite lies in different magnetic powder utilized, therefore injection molded ferrite has lower magnetic properties due to ferrite features, but it costs much less than that of NdFeB. Injection Molded [...]

Injection Bonded Ferrite Magnet Properties

Injection Bonded Ferrite Magnet Properties It is a new kind of composite permanent magnetic material with the features of flexible shaping, precision dimension, adjustable magnetic properties, fine coherence, composite molding, elastic magnetization and high mechanical strength. Low cost, widely used in many different applications ,stable magnetic property with strong demagnetization resistance capability. Good corrosion resistance [...]

Magnet Temperature Effects

Magnet Temperature Effects Magnetic properties of all the permanent materials change with temperature. Remanence, and thus the magnetic flux a magnet produces, decreases in all magnetic materials with increasing temperature. Ultimately, at certain, for each material characteristic temperature the material becomes non-magnetic. This temperature is known as Curie temperature (Tc). Figure 1 illustrates the temperature [...]

Magnetizing Machine

Magnetizing Machine In magnetizing the magnetic domains inside of a magnet are aligned with the magnetizing field. If the magnetizing field strength is high enough, all the domains will be aligned and the magnet is said to be magnetized to saturation. Magnetizing to saturation is usually recommended as only then are the magnetic properties of [...]

Magnetic Measurements

Magnetic Measurements For measuring of the fundamental magnetic properties of a material (Br, bHc, iHc, BHmax, demagnetisation curve), Hysteresisgraph or BH-tracker is used. A BH-tracker consists of an iron (usually FeCo) yoke to form a closed circuit, electromagnets to create the demagnetizing field and fluxmeters to determine the demagnetizing field and the materials response. [...]

Magnetic Properties and Magnet Customization

Magnetic Properties and Magnet Customization 1) What is the strongest type of magnetic material? Neodymium iron boron magnets are the strongest magnet available with energy products up to 52MGOe available. Neodymium alloys are very susceptible to magnetic strength loss due to high temperature therefore proper consideration should be given when selection neodymium for use within [...]

Magnet Machining Process

Magnet Machining Process Magnet Machining Process - Magnets that have been through the sintering process are machined and plated. Machining Due to shrinkage from the sintering process, required measurements are achieved by grinding the magnets with abrasives. Diamond abrasives are used for this process because the magnet is very hard. machining Surface Treatment (Plating) [...]