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rare earth elements Free Articles

The New Gold Rush Sustained by Cellular Phones and TVs

This is an account of the scramble to discover rare earth elements very essential to modern-day technology and to replace the ever-increasing cost of Chinese sources for these items. They are actually not that rare and are readily available in the United States and lots of various other countries.

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Rare Earth Elements: Geological Distribution

‘Rare earth elements’ are a group of 17 elements present in the periodic table (15 Lanthanoids, Scandium and Yttrium). Scandium and Yttrium are chemically similar and present in the same ores as Lanthanoids.

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Journey From The Rare Earth Elements Mine to Periodic Table

To understand the chemical elements especially rare earth metals, it is really important to study the periodic table that comprise of horizontal rows and vertical columns.

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Effects of various impurity elements on the stainless steel

Silicon is the element that form of ferrite, is a normal impurity element in general stainless steel.

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Manganese and nitrogen instead of nickel in chrome-nickel stainless steel

Although chrome-nickel austenitic steels have many advantages, but due to the growing development and applications of stainless steel heat resistant steel, nickel-based heat-resistant alloys containing less than 20% of the nickel, as well as the chemical industry in the decades increasingly , while the less the amount of the nickel deposits and because they are concentrated in a few areas, therefore appear in the world within a contradiction of nickel in terms of supply and need.

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Seamless Steel Pipe High Brittleness

In the production process of seamless steel slab must be heated to a temperature which produces temper embrittlement of steel embrittlement after quenching and tempering of steel produced. According brittle tempering temperature range, can be divided into low and high temperature temper brittleness temper brittleness.

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Rare Earth Mining – Economic Growth and Recycling

It’s the time to think about the proper uses of rare earth metals available above the ground, not inside the ground so that rare earth mining can boost the economic growth in better manner.

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The role of alloying elements and rare earth elements in heat-resistant steel

Niobium is the alloying elements of narrow ³-Fe phase, has a certain solubility in the ±-Fe. Containing 0.5% Nb in iron-base alloy is sufficient to achieve the effect of dispersion strengthened.

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The role and influence of various elements in iron and steel

At present, the known chemical elements have more than 100 kinds, the industry commonly used iron and steel materials meet the chemical elements are about 20 species.

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Part of the technical application of powder metallurgy

Metal powder is porous materials widely used in many things such as lightweight structural materials, high temperature filters, membranes, etc.

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Rare Earth Elements: Discovery and Early History

Rare earth elements are seventeen in number according to the periodic table. However, the word “rare” is not to be taken in a literal sense as most of these elements are readily available in the earth’s crust, and they are present in significant quantity. However, the reason the term rare is used is because the areas in which these elements are present can’t be easily extracted due to the unfavorable economic conditions of these areas.

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