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How to consider the specifications and types of magnets

When choosing NdFeB magnets, customers should choose the magnet trademark suitable for them according to their working temperature. If the working temperature is higher than the...

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The Development Trend of Soft Magnetic Materials

With the rapid development of electronic information industry, various new requirements have been put forward for high-frequency inductive elements (such as high-frequency transformers, small inductors, etc.), and the performance of Ferrite core, which are the main components of inductive elements, is also required to be improved. Therefore, higher material standards and requirements have been put forward for soft magnetic ferrite materials and magnetic core components, such as miniaturization, chip based, high-frequency, high-performance, and low loss of components. Among soft magnetic ferrite materials, the materials with the highest demand and the most urgent demand for performance improvement are high-frequency low-power loss ferrite materials and high permeability ferrite materials. High frequency low power loss ferrite materials are mainly used for various high-frequency miniaturized switching power supplies (such as AC-DC, DC-AC converters) and Flyback transformer of displays; H

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2023-08

Magnet Spirit Magnet

[alias] Spirit Magnet; Live magnet; Xuanshi; Chu Shi; Needle aspirating stone; Iron ore; Male magnet; Iron stone[Composition and structure] Magnetite is Magnetite or hematite mineralized Magnetite, often accompanied by quartz and Amphibole. The main component is Fe3O4, which often contains V, Ti, Mg, Mn, Al, etc; Equiaxed crystal system; The crystal is Octahedron; Most of them are granular aggregates or dense blocks.【 Physical and chemical properties 】 Iron black, or with dark blue color; The stripes are black; Semi metallic luster; Uneven fracture surface; Hardness 5.5,; Density 5.16-5.18g/cm3. Having strong magnetism; Insoluble in water, only slightly soluble in acids and alkalis, relatively more soluble in alkali than in acid; The surface is prone to weathering, with a reddish color and reduced gloss and hardness.【 Function and Use 】 It has the functions of calming and calming the mind, tonifying the kidneys and blood, nourishing yang and qi, calming the liver and relieving asthma,

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2023-08

Ferrimagnetism

Like ferromagnetic materials, when the magnetic field does not exist, Ferrimagnetism materials will still remain magnetized; Like Antiferromagnetism matter, adjacent electrons spin in opposite directions. These two properties are not contradictory. In Ferrimagnetism materials, different atoms belonging to different sublattices have opposite magnetic moments in opposite directions and different values. Therefore, the net magnetic moment of the material is not equal to 0, and the magnetization is not equal to zero, so it has weak ferromagnetism.Because Ferrimagnetism materials are insulators. Ferrimagnetism materials in the high frequency time-varying magnetic field can be used as materials for microwave devices such as isolators, circulators, gyrators and so on, because the induced Eddy current is very small and can allow microwave to pass through.Since the composition of Ferrimagnetism materials must have at least two different magnetic moments, only compounds or alloys can show Ferrim

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2023-08

Ferromagnetism

The hysteresis loop relationship between magnetization intensity (vertical axis) and H-field (horizontal axis).Inside ferromagnetic materials, like Paramagnetism materials, there are many unpaired electrons. Because of Exchange interaction, the spins of these electrons tend to be in the same direction as the spins of adjacent unpaired electrons. Due to the fact that ferromagnetic materials are divided into many magnetic domains, although the spins of all electrons within the domains are unidirectional, resulting in a "saturation magnetic moment", the direction and magnitude of the magnetic moment are different between domains. Therefore, the net magnetic moment and magnetization vector of an unmagnetized ferromagnetic material are equal to zero.Assuming an external magnetic field is applied, the magnetic moments of these domains tend to be in the same direction as the external magnetic field, thus forming a potentially strong magnetization vector and its induced magnetic field. As the

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2023-08

Neodymium iron boron industry will develop rapidly in terms of environmental protection and energy conservation

With the advent of the global era of high oil prices, the entry into force of the Kyoto Protocol, and the increasing emphasis on environmental protection and energy conservation by countries around the world, environmental protection and energy conservation are becoming important factors affecting the development of manufacturing industries in various countries. Neodymium iron boron is one of the main raw materials for manufacturing environmentally friendly and energy-saving products. The application of neodymium iron boron in fields such as automobiles, compressors, and wind turbines is precisely based on environmental protection and energy conservation considerations. As a functional material for environmental protection and energy conservation, neodymium iron boron will be more widely used. The neodymium iron boron industry is becoming a new sunrise environmental protection industry.We expect an average annual demand growth rate of around 20% for neodymium iron boron in the next 3-5

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2023-08

Overview of neodymium iron boron industry

Neodymium iron boron has the characteristics of small volume, light weight, and strong magnetism, making it the most cost-effective magnet to date. It is expected that there will be no alternative magnetic materials to neodymium iron boron in the next 20-30 years. The main raw materials for producing neodymium iron boron permanent magnet materials include metal neodymium, pure iron, boron iron alloy, and other additives.The core technology of the neodymium iron boron industry is mainly reflected in the manufacturing process, specifically in the uniformity, consistency, processing quality, coating quality, and other aspects of its products.The neodymium iron boron industry is a highly patented industry, and only after obtaining a patent license and paying a patent fee can individual magnets or components equipped with magnets be sold in the patent area. The neodymium iron boron patent is a patent package, although the main patent is nearing expiration, there are still many auxiliary pat

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2023-08
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