• TDK plans to manufacture rare-earth magnets in South China

    TDK will begin to manufacture rare-earth magnets ( a kind of strong neodymium magnets) in south China.

    TDK Corp. said it will establish a joint venture in China’s southern Guangdong province in May to manufacture rare-earth magnets, for which global demand is expected to surge.

    The company said the joint venture, Guangdong TDK Rising Rare Earth High Technology Material Co., will be set up by three companies: TDK, Rising Nonferrous Metals Co., a Guangdong-based resource development company, and Tokai Trade Co., a Tokyo-based trading company.

    TDK will hold a 59-percent share in the $33-million venture while Rising Nonferrous Metals and Tokai Trade will have 37 percent and 4 percent, respectively.

    TDK manufactures various electronic devices for use in automobiles, IT equipment and other applications, as well as various magnets for industrial equipment.

    Japan took another step toward lessening its rare earths dependence today, announcing plans to drastically reduce consumption levels in response to China’s continued market dominance. Of particular concern to the Japanese government is dysprosium — a rare earth used in the production of high-powered magnets. China, which accounts for about 95 percent of the world’s rare earth supply, has been tightening export controls on the metal in recent months, sending global prices skyward. With its domestic supplies dwindling, Japan has now committed to reducing its dysprosium consumption by 30 percent over the next few years, as part of a $65 million initiative. Much of that money will presumably go toward helping manufacturers develop alternative production and recycling methods, as some already have. Toyota, for instance, has found a way to produce hybrid and electric vehicles without using dysprosium, while Mitsubishi, Panasonic and TDK are currently looking at ways to extract the metal from old air conditioners. If effective, the government’s program would reduce domestic consumption by between 200 and 400 tonnes per year.

  • What is the history of permanent magnets in east

    Man-shaped compass mounted on a chariot

    Man-shaped compass mounted on a chariot

    The first reported application of naturally occurring permanent magnet material is in the Chinese chronicles. It has been reported 2 that the best prepared caravans that crossed the Gobi desert, from the minarets of the kingdoms of the Kushans to the imperial pagodas on the banks of the Yangtze, contained a white camel. In a clay pot full of water, protected by a carved wooden box mounted between the humps of the albino beast, floated a cork containing a piece of magnetized iron. The edges of the pot were painted in four colors: red for south, black for north, green for east and white for west. This primitive compass enabled the caravaner to navigate across the sands. In the Chinese chronicles there are also descriptions of magnetic gates, which restricted the access of armed ill wishers, and magnetic roadways made possible by the magic stone chu-shih. These stones, simply magnetic iron ore, were also known as ‘loving stones’ because their attraction for pieces of iron was similar to the love parents have for their children.

    One Chinese legend relates that Emperor Huang-Ti, nearly 5000 years ago, had a chariot made on which was mounted a small man with an outstretched arm. This arm, Figure 1, always pointed South, so that Huang-Ti’s armies were able to attack their enemies from the rear in a fog and defeat them.

    Chinese spoon compass

    Chinese spoon compass


    The stories of camel and chariot mounted compasses may be apocryphal, but Chinese encyclopedias state that magnetic needles were used as compasses on ships in 400 BC, and there exists a 1000 year old Chinese compass resembling a traditional painted spoon, see Figure 2.

    Notwithstanding these early oriental excursions into permanent magnetism, the principal development of permanent magnet materials has been undertaken in Europe.

  • The history of Permanent magnets in Europe

    A naturally occurring permanent magnet material, a variety of magnetite, Fe3O4, known as a lodestone was known to the Greeks. The name lodestone, or alternatively and incorrectly loadstone, was derived from its navigational property of seeking the lodestar. The names magnetite, magnetism and all their derivatives stem from the name of the district where lodestones were found to be plentiful, Magnesia. The microstructural origin of the coercivity of lodestones, typically 10 kA/m, was shown to be due to a fine intergrowth of Fe2O3produced by oxidation in the Fe3O4material. This fine microstructure acts as an in homogeneity impeding magnetic reversal, by restricting the motion of the magnetic domain walls, thereby increasing the coercivity of the material. Thales of Miletus, circa600 BC, and many other Greek philosophers of the period from 400 to 200 BC described the attractive property of lodestones. Later, Lucretius in “De natura reru” described the repulsion of lodestones, but it was the development of artificial permanent magnets made by ‘touching’ iron needles with a lodestone which was the first transition in the improvement of permanent magnet materials. It is not possible to locate accurately the first production of artificial permanent magnets. At the beginning of the 13th century, the French troubadour Guyot de Provins called Hugue de Bercy by Hoppe 6describes, in
    his satirical poem “La Bibl,” the use of a touched needle in a straw floating on water. It is claimed that the inhabitants of Amalfi particularly the jeweler Flavio Gioia made compasses, similar to today’s instruments with a rotating disc marked out in divisions, at the beginning of the 13th century. Peter Peregrinus, in his famous treatise “Epistola and Sygerum de Foucoucourt milite de magnet,” in 1269, stated that an oblong piece of iron which had been touched by a lodestone would turn toward the pole if floated on a piece of wood. He also discovered that two regions of the magnetite, now called magnetic poles, attracted a piece of iron more strongly then the rest of the magnetite. During the next three centuries, the alchemists attempted to develop lodestones as a facilitator for the change of base metal into gold, as an aphrodisiac, as a talisman to attract the opposite sex, etc. This extensive period, which produced no improvements in the properties of permanent magnets, was terminated by the publication of the first great work in the field of magnetics.

  • How to protect Neodymium Stong Magnets from corrosion

    Surface Treatment of Neodymium magnets

    Corrosion Resistance of Neodymium magnets

    A neodymium-based sintered magnet is liable to oxidization or corrosion because it has for its main components neodymium (Nd) and iron (Fe) and is composed of several phases in a crystalline structure. It is subject to electrochemical corrosion under the presence of a small amount of acid, alkali or water; the magnet rusts and demagnetizes as rusting progresses. Although it remains stable for many hours when it is allowed to stand in a dry atmosphere, it should be surface-treated as a preventive measure for the presence of humidity or a rise in temperature, an event often encountered in a general operating environment. This treatment may become unnecessary when it is used in a hermetically sealed system or in a low-corrosion environment.

    The magnet does not corrode when exposed to general organic solvents or adhesives. However, customers are advised to contact Magpole Technology sales office beforehand if cutting or grinding of any neodymium magnets products is intended. If washing and drying process is involved in processing of the neodymium magnets on the customers side, cautions must be undertaken concerning residual water or condensation of moisture on the magnets. Storing the magnets in a dry atmosphere or in an inert gas is strongly recommended.

    Surface treatment of neodymium magnet

    Neodymium magnets has improved corrosion resistance of the base material itself as a result of structural refinement and compositional uniformity of sintered constituents. Moreover, its reliability is enhanced considerably by the application of surface treatment technologies such as aluminum and nickel coatings. Additionally, greater importance is attached to surface coatings in terms of not only corrosion-resistance performance but also other factors such as adhesive durability and electrical insulation quality, the recently increasing requirements for magnets used in motors. We have developed environmentally sound processes and products that meet these requirements. Customers may use the neodymium magnets products with confidence with regard to these aspects. Our surface treatment technology is in compliance with international environmental standards, such as the RoHS directive and ELV directive.

    Customers are strongly advised to consult with Magpole Technology sales office for technical assistance concerning the surface treatments in order to choose appropriate treatment processes and product types suitable for the intended applications according to the specific usage environment and required characteristics.

  • Uses of Neodymium Magnets from Supramagnets

    Neodymium magnets (Nd-Fe-B) are composed of neodymium, iron, boron and a few transition metals, also known as NdFeB, NIB, or Neo magnet), the most widely used type of rare-earth magnet. Developed in 1982 by General Motors and Sumitomo Special Metals, neodymium magnets are the strongest type of permanent magnet made. They have replaced other types of magnet in the many applications in modern products that require strong permanent magnets.

    Here is just some of the uses that we know our neodymium magnets have been put to:

    • Repairing my fridge seal. Put a couple in-side the plastic of the seal and it holds the
      door shut beautifully
    • Experimenting with cathode ray tubes
      (TV’s and computer monitors)
    • Hold directions to my motorbike petrol tank
      so they don’t come off at speed
    • Removing parts from a punch press,
    • Cleaning up debris in a machining work-shop
    • Hanging wet clothes to tent poles or parts
      of a caravan
    • Levitation
    • Tie clip
    • Violin mute. Put small discs on each side
      of the bridge to add mass and quiet the
    • Slot car traction
    • Holding down a car cover
    • Pulling dents out of vehicles.
    • Attaching tracking devices to motor vehi-cles
    • Jewellery clasps
    • Hanging fairy lights
    • Re-magnetising alnico (Aluminium-Nickel-Cobalt) magnets.
    • Hanging tapestries in a warehouse.
    • Magic illusion tricks
    • With 1 magnet and a ball bearing I remove
      dents from brass musical instruments.
    • Holding all the lathe tools to the lathe
    • Magnetic stirring device
    • Bike light generator
    • Christmas presents
    • Wind power alternator
    • Alleviate joint pain – magnetic therapy
    • Hold a small vice down
    • Welding
    • Picking up nails/screws/needles
    • School projects and demonstrations
    • Hold lines and tape on steel boat hull.
    • Collecting nails or bits of barbed wire from
    • Oil filter in my motorbike
    • Guitar pickups
    • Attaching tools securely to my car
    • Holding the roof down on my shed
    • Holding safety shield on machine tools
    • Holding trailer lights on towed vehicle.
    • Picking keys out of storm drains
    • Retrieving an antique shotgun from a well.
    • Treasure hunting
    • Loudspeakers
    • Cleaning up the oil in go-cart racing en-gines. Glue them inside!
    • Used to create great ear, nose, lip rings
      and therefore avoid piercing.
    • Car Top advertising signs
    • Stud finder in walls
    • Holding vehicle number plates to the car
    • Holding sheet metal together for welding
    • Dampening for seismograph
    • Door latches on a tree-house
    • Hold down a tarpaulin
    • Hanging tools in sheds and garages
    • Door catches for cupboards and ward-robes.
    • Cleaning fish tank glass from the outside
    • Holding a set of house keys securely in a
    • For the darkroom: to secure metal devel-oping tank parts, reels, etc. To lock down
      metal wash tank doors instead of sticky
      bolt locks.
    • Motor experiments
    • Water Conditioning
    • Magic tricks
    • Erasing tapes
    • Remove metal debris from a well
    • Homemade alternator
    • Movement of paramagnetic beads for bio-medical applications
    • Erasing credit card data
    • Erasing hotel door key cards
    • Cleaning plastics granulate for moulding.
    • Holding a vehicle glove box closed
    • Finger Print collection and processing
    • Shirt fastenings instead of buttons or studs
    • Holding curtains to a caravan
    • Holding curtains to a narrowboat
    • Geocaching
    • Door closures for high end furniture
    • Swarf removal from converyor belts
    • Cleaning fish tanks

    SupraMagnets supply various permanent magnets: Neodymium Magnets, SmCo Magnets, Alnico Magnets, and Magnet Assemblies at very competitive prices. Buy Neodymium Magnets from Supramagnets.com!

  • Fun Magnets Facts for Kids on Supramagnets

    Fun magnets facts for kidsFun Magnet Facts for Kids

    Learning about magnets is great fun. Magnets are used every day all over the world. Supramagnets try to find fun magnet facts for kids and enjoy learning some truly magnetic information about the world of magnetism.

    Let’s find out what a magnet is, how magnetic fields work, which metals are magnetic and which aren’t, how the Earth’s core relates to magnetism and much more. Use our fun magnet facts to start learning how magnets work.

    • Magnets are objects that produce an area of magnetic force called a magnetic field.

    • Magnetic fields by themselves are invisible to the human eye.

    • Iron filings can be used to show magnetic fields created by magnets (such as in the picture to the right).

    • Magnets only attract certain types of metals, other materials such as glass, plastic and wood aren’t attracted.

    • Metals such as iron, nickel and cobalt are attracted to magnets.

    • Most metals however are not attracted to magnets, these include copper, silver, gold, magnesium, platinum, aluminium and more. They may however magnetize a small amount while placed in a magnetic field.

    • Magnetism can attract magnetic objects or push them away.

    • Magnets have a magnetic north pole and a magnetic south pole. If the same pole of two magnets are placed near each other they will push away (repel), while if different poles are placed near each other they will pull together (attract).

    • Magnetic objects must be inside the magnetic field to respond, which is why you may have to move a magnet closer for it to have an effect.

    • The Earth’s core is believed to be a mix (alloy) of iron and nickel, giving the Earth its own magnetic field.

    • The Earth’s magnetic field is responsible for deflecting the solar wind, charged particles that come from the Sun.

    • Magnetic compasses use the Earth’s magnetic field to help navigate in north, south, east and west directions.

    • Electromagnets are created by an electric current running through a surrounding coil. They have many uses including the generation of electricity in hydroelectric dams.

    ironfilings on supramagnets magnetpoles on supramagnets
  • Supraballs vs Buckyballs

    Supraballs vs Buckyballs?
    Buckyballs is already established on market very well but it seems like the U.S. Consumer Product Safety Commission’s decision will end the Buckyball’s run as everyone’s favorite desk toy. Supraballs is from Supramagnets.com. It is a new player for this type of magnet toy. Bucky Balls Magnetic Building Sphere Toy
    Buying supraballs
    one set of supraballs which original price is $24.6 USD.
    Ordering process on this site for us was very easy. It is very easy to use the discount code 2buckyballs if you buy two sets, so you reduce the price to only $19.6 USD/set. You can chose payment through paypal or 2checkout with free shipping.

    Coating Supraballs vs BuckyBalls
    Both balls are made in China with neodymium material and excelent nickel coating. Their surface is protected by shiny resilient surface with anti-bacterial properties. Coating of the neodymium magnet is very important for their protection.

    Spheres size of neocube vs BuckyBalls
    Supraballs and Buckyballs spheres size is all exactly 5mm. The size of the balls is very important more bigger size offer you more easy to manipulate with the magnet spheres and make more easy some nice shape.

    So you are waiting to get a alternatives as BuckyBalls Magnetic Building Spheres for this magnetic puzzle? Maybe Supraballs is your good choice…

  • What does The Name of Buckyballs mean ?

    In 1985 when scientists Richard Smalley, Robert Curl, James Heath, Sean O’Brien, and Harold Kroto developed the first “fullerene”, a round molecule composed entirely of carbon, they decided the molecule looked alot like the geodesic domes which were made famous by legendary architect Buckminster Fuller and they named it the buckminsterfullerene. Read more about the discovery of Buckyballs.

    Above you can see the the molecular structure of the buckminsterfullerene. Below are geodesic domes. You can easily see the similarity. The name buckminsterfullerene was later shortened to Buckyballs. This was likely the first time the term “Buckyballs” was used.

    But the magnetic toys are not made of carbon, they are made of Neodymium. Neodymium is a “rare earth” element (it is just a name, the metal behind the magnet is not really rare) which has super magnetic strength. According to the Buckyballs website, since the magnetic toy can also be used to make a geodesic dome shapes, the company used the same name for the toy.

    The magnetic toy was trade marked by a company owned by Maxfield and Oberton Holding in March 2009. But as with many products, people and imitators use the term generically (who wants to say “Neodymium magnetic toy”?). As imitators were being sold on Amazon using the name Buckyballs, in 2011 Maxfield and Oberton sued Amazon for violating their trademark. Download a Copy Of The Lawsuit Against Amazon

    Supramagnets provides strong magnets, magnetic gifts, magnetic gadgets and more to people passionate about magnets.

    Get colorful supraballs like buckyballs and neocube here.

    Get more coupon codes on buckyballs magnets for saving.

    coupon codes on buckyballs magnets

  • Hi, Supramagnets

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