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rare earth magnets are composed of rare earth magnetic material and rare earth metals. how rare earth metals works on strong magnets

Rare earth metals family introduction, rare earth metal magnetic material, rare earth metal lists, rare earth metals function and application

Rare earth metals family introduction

Rare earth family include 15 of lanthanide elements, and scandium and yttrium which is close to the lanthanide, totally 17 elements. They are: lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, scandium, yttrium. The biggest users of metal is neodymium in ndfeb permanent magnet materials. The coming of ndfeb permanent magnets for rare earth high-tech areas has brought new vigor and vitality. Ndfeb magnets, with high magnetic energy known as "the king of the permanent magnet, with its superior performance is widely used in electronics, machinery and other industries.

Rare earth metal elements application

Due to the atomic structure of the special, rare earth family members is very lively, and are a good and boundless magic. They combine with other elements, can be a kaleidoscope of category is various, function, application of new materials, different and double improve performance, is called the "industrial monosodium glutamate" of contemporary. Such as: the application of rare earth in supersonic aircraft А Ц Р 1 and Ж П 207 alloy, can work under 400 ℃ for a long time, it is nowadays one of the best alloy high temperature performance, its lasting strength aluminum alloy can be improved 1 ~ 2 times than normal; Steel after adding rare earth, made of thin transverse impact toughness of the compound increased by more than 50%, corrosion resistance increased by 60%, and as long as each tonne of steel re (about 300 grams, play a prominent part, has four two dial one thousand kg; Of rare earths added in acidic textile dyes, can improve the dyeing rate, adjusting the affinity of dyes and fibers, improve the color fastness, the improvement of fiber color, appearance quality and the degree of soft, and can save dyes and reduce environmental pollution and reduce labor intensity, etc.; Rare earth elements can improve the chlorophyll content, enhance photosynthesis of plants, promote root growth and absorption of nutrients.

Also can promote seed germination, and promote the growth of seedlings, and also has the crops to enhance the ability of disease resistance, cold resistance, drought resistance; Using rare earth promethium as heat source, can provide auxiliary energy for vacuum detection and satellites. Promethium batteries can be used as a missile guidance apparatus and the power of the clock, this kind of battery is small in size, can be used for several years in a row. In today's world, whether in high-tech fields such as aerospace, aviation, military, or the People's Daily life supplies, regardless of industry, agriculture, or chemistry, biology, medicine, the application of rare earth and its role is almost ubiquitous, omnipotent.

Rare earth metal elements  lists and introduction

--Lanthanum (La)

This element lanthanum is named in 1839, when there is a call "mo sander" swedes ceria was found to contain other elements, he borrowed from Greek the word "hide" the element named "lanthanum". Since then, lanthanum then boarded the stage of history. Lanthanum has a very wide range of applications, such as applied to piezoelectric materials, electric materials, thermoelectric materials, magnetic resistance materials, luminescence materials (powder), hydrogen storage materials, optical glass, laser materials, all kinds of alloy materials, etc. She also applied to the preparation of many organic catalysts of chemical products, light conversion agricultural film also used lanthanum, in foreign countries, the scientists lanthanum on crop role assignment and calcium "super" laudatory name.

--Cerium (Ce)

"Ce" this element is a German at the crow of prose, the Swede uz ", and gave birth to the chests, discovered in 1803 and named after, to the memory of the asteroid was discovered in 1801, Ceres. ?? Cerium additive in cerium are widely used in (1) as a glass, can absorb ultraviolet and infrared ray, has been applied in the automobile glass. Not only can prevent ultraviolet ray, also it can decrease the temperature of the car, saving air conditioning. Since 1997, the Japanese auto glass all join cerium oxide, used in automobile glass cerium oxide at least 1996, 2000 tons, the United States is about one thousand tons. (2) are the applications of cerium to automobile exhaust purification catalysts, which can effectively prevent a large number of automobile exhaust gas into the air. The United States in this consumption accounts for a third of the total consumption of rare earth is strong. (3) sulfide cerium can take the place of lead, cadmium and other harmful to the environment and human's metal used to paint, to plastic coloring, can also be used for coating, ink and paper industries. The leading French rhone Planck's company. (4) Ce: LiSAF laser system is developed in the solid state laser in the United States, by monitoring the tryptophan concentration can be used to detect biological weapons, can also be used for medicine. Cerium application field is very broad, almost all in the field of application of rare earth containing cerium. Such as polishing powder, hydrogen storage material, thermoelectric materials, cerium tungsten electrode, ceramic capacitors and piezoelectric ceramic, cerium silicon carbide abrasive, fuel cell materials, gasoline catalyst, some permanent magnetic material, all kinds of alloy steel and non-ferrous metals, etc.

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