Fracture of an anisotropic rare-earth-containing magnesium ...

Fracture of an anisotropic rare-earth-containing magnesium alloy (ZEK100) sheet is investigated at different stress states and strain rates. A variety of sample geometries, loading conditions, and loading orientations are used to achieve different stress triaxiality and deformation mechanisms.

Robust Rare‐Earth‐Containing Superhydrophobic Coatings for ...

The robust rare‐earth‐containing superhydrophobic coatings are fabricated by a simple and scalable method, which includes spraying the lanthanum hydroxide sol onto metallic substrates (AZ61 Mg and 2024 Al) and then modifying the surfaces with stearic acid.

Rare earth minerals (REE) - CONCENTRATION OF MINERALS

Rare earth mineral that form their own deposits: Bastnaesite, Monazite, Xenotime. To extract the rare earth elements industrial importance are the following minerals: S ynchysite, Euxenite, Gadolinite, Loparite; Rare earth elements are extracted from the following minerals too: Churchite, Rhabdophane, Parisite, Fergusonite, Samarskite, Allanite.

What Are Rare Earths?

What Are Rare Earths? Rare earths are a series of chemical elements found in the Earth's crust that are vital to many modern technologies, including consumer electronics, computers and networks, communications, clean energy, advanced transportation, health care, environmental mitigation, national defense, and many others.

Comparison of behaviour of rare earth containing catalysts ...

Catalysis Today 61 (2000) 317–323 Comparison of behaviour of rare earth containing catalysts in the oxidative dehydrogenation of ethane P. Ciambelli a,∗, L. Lisi b, R. Pirone b, G. Ruoppolo c, G. Russo c a Dipartimento di Ingegneria Chimica e Alimentare, Università di Salerno, via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy b Istituto di Ricerche sulla Combustione, CNR, Naples ...

Why China's rare earths threat is no game changer in the ...

Jun 03, 2019· A man driving a front loader shifts soil containing rare earth minerals to be loaded at a port in Lianyungang, east China's Jiangsu province, for export to Japan. China's restrictions on exports ...

Recovery of rare earths from sludges containing rare-earth ...

To develop a process for the recovery of rare-earth elements from sludges, a chemical recycling process was applied to neodymium-containing boron trioxide.

What are 'rare earths' used for? - BBC News

Mar 13, 2012· Image caption Rare earth elements are chemically similar and are sometimes used in similar ways "Rare earths" are a group of 17 chemically similar elements crucial to …

Placer deposits of ores containing REE (alluvial deposits ...

Placer deposits of ores containing REE. Placer deposits of rare earth metals (alluvial deposits) are the coastal sands, which are located along the shores of oceans, seas and rivers. The size of mineral particles is 0,07-0,2 mm (to 1 mm). Placers are occupied from hundreds of …

Rare earth element deposits containing dolomite

Name of deposit Deposit type State or Province Country; Coola: Carbonatite: Huambo: Angola: Monte Verde: Carbonatite: Huambo: Angola: Virulundo: Carbonatite: Namibe ...

High levels of rare earth minerals found in U.S. coal basins

Dec 02, 2017· High levels of rare earth minerals found in U.S. coal basins ... understates our dependence on rare earths because we also import billions of dollars worth of electronic products that contain rare ...

Rare Earth Recycling | Department of Energy

Jan 01, 2017· Recycling rare-earth-containing products would provide a steady, domestic source of rare earths to manufacturers while also reducing waste. Currently, the main roadblock to recycling rare earth elements is the cost required to purify the mixtures obtained from consumer devices.

US4855206A - Rare earth containing magnetic carrier ...

The above table shows that the throw off of the rare earth containing ferrites is within acceptable limits and is comparable to the throw off of the control. Examples 6 and 7 demonstrate that the rare earth containing ferrites will perform as well in an electrostatographic process as does the control.

Your old phone is full of untapped precious metals - BBC ...

Smartphones also contain a range of rare earth elements – elements that are actually plentiful in the Earth's crust but extremely difficult to mine and extract economically – including ...

Magnesium alloy, containing rare earth metals

The technical FIELD. The invention relates to magnesium alloys containing rare earth metals having superior machinability and/or plasticity, in particular, for forging (forging), but still retaining a high corrosion resistance.

Rare-earth element - Wikipedia

A rare-earth element (REE) or rare-earth metal (REM), as defined by the International Union of Pure and Applied Chemistry, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.

Fatigue of rare‐earth containing magnesium alloys: a ...

This problem could be conquered through weakening the texture via addition of rare‐earth (RE) elements. Thus, a number of RE‐containing Mg alloys have recently been developed. To guarantee the structural integrity, durability and safety of highly loaded structural components, understanding the characteristics and mechanisms of cyclic ...

Why the US buys all its rare earth metals from China ...

Rare earth minerals, though not actually rare, have unique chemical properties that make them essential for wide-ranging technologies, including smartphones, hybrid cars and high-tech weapons.

Rare Earths in the United States | INN

A preliminary economic assessment done in 2011 describes a tertiary rhyolite intrusion containing both heavy and light rare earth elements. Total rare earth element oxides (REO) are pegged at ...

Rare earth minerals and classification-Metalpedia

Rare earth minerals and classification; Rare earth minerals; In the earth's crust, instead of existing as free metals, rare earth elements usually occur in the minerals of mixtures of various rare earth elements and nonmetals. More than 200 kinds of minerals have been discovered to contain essential or significant REE currently, and bastnaesite, monazite and xenotime are the three most ...

Appalachian coal ash richest in rare earth elements

May 27, 2016· The results, published online on May 26 in the journal Environmental Science and Technology, showed that coal from the Appalachian Mountains contains the most rare earth …

Rare-earth mineral - Wikipedia

A rare-earth mineral contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with alkaline to peralkaline igneous complexes, in pegmatites associated with alkaline magmas and in or associated with carbonatite intrusives. Perovskite mineral phases are common hosts to rare-earth elements within the alkaline complexes.

A Rare-Earth Phosphor Containing One-Dimensional Chains ...

Feb 06, 1998· An unusual luminescent inorganic oxide, Sr2CeO4, was identified by parallel screening techniques from within a combinatorial library of more than 25,000 members prepared by automated thin-film synthesis. A bulk sample of single-phase Sr2CeO4 was prepared, and its structure, determined from powder x-ray diffraction data, reveals one-dimensional chains of edge-sharing CeO6octahedra, with …

(PDF) Comparison of behaviour of rare earth containing ...

Catalysis Today 61 (2000) 317–323 Comparison of behaviour of rare earth containing catalysts in the oxidative dehydrogenation of ethane P. Ciambelli a,∗, L. Lisi b, R. Pirone b, G. Ruoppolo c, G. Russo c a Dipartimento di Ingegneria Chimica e Alimentare, Università di Salerno, via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy b Istituto di Ricerche sulla Combustione, CNR, Naples ...

Coordination Chemistry in Rare Earth Containing Ionic ...

Coordination Chemistry in Rare Earth Containing Ionic Liquids Chapter in Handbook on the Physics and Chemistry of Rare Earths · October 2016 with 166 Reads How we measure 'reads'

A Rare-Earth Phosphor Containing One-Dimensional Chains ...

An unusual luminescent inorganic oxide, Sr2CeO4, was identified by parallel screening techniques from within a combinatorial library of more than 25,000 members prepared by automated thin-film synthesis. A bulk sample of single-phase Sr2CeO4 was prepared, and its structure, determined from powder x-ray diffraction data, reveals one-dimensional chains of edge-sharing CeO6octahedra, with two ...

Samples Containing Rare Earth Elements

Overview. The Rare Earth (RE) elements include Y, La, and the Lanthanides (Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu).The chemistry of these elements is sufficiently similar that they can be treated as a group rather than individually.

Rare Earth Elements | Geology for Investors

Unlike bastnäsite, monazite tends to have a full range of rare earth elements, from the lighter ones to the heavier ones. Bastnäsite, on the other hand, contains mostly lighter rare earth elements. Despite this, the radioactive nature of monazite has made bastnäsite the preferred source of rare earth elements.

rare-earth element | Uses, Properties, & Facts ...

Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] through lutetium [Lu]).

Rare earth metal-containing ionic liquids - ScienceDirect

The production and application of rare earth compounds constitute an important strategic and dynamic segment of the energy production, electronic and chemical industries . New markets are developing for individual high-purity rare earths, particularly for neodymium and dysprosium for use in high-performance permanent magnets.