Earth metals
Reclaim of Rare Earth Metals from Bond Magnets by Means of Thermally Activated Semiconductors (TASC)
... resources as their name once implied. The amount of the reserve is said to be about 130 million tons, of which about 48.3% is held by China. In addition, the production of rare earths is centered on China and its market ...
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Rare earth metals asecofriendly corrosion inhibitors for mild steel in produced water
... rare earth metals are demonstrated in Figure (1) at 25 o ...rare earth metalsfall significantly below that of blank ...rare earth metals varies linearly with ...
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Synthesis and Characterization of Metal Complexes of Curcumin with Alkaline earth metals
... New binary Bis complexes using cur cumin as a primary ligand with Alkaline earth metals like Magnesium and Calcium have been synthesized and characterized. by various techniques like IR, UV-Viv, NMR, ...
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Analysis of Different Rare Metals, and Rare Earth Metals in Harvested Rain Water in Gaza Strip/Palestine by ICP/MS Data and Health Aspects
... rare metals (Rb, Zr, Ti, Tl, Sb, Sc, Y), and rare earth metals (La, and ...These metals usually have no maximum accepta- ble limits as there is no sufficient data about their toxicity to human ...
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Study of iron stripping from DEHPA solutions during the process of rare earth metals extraction from phosphoric acid
... During the processing of apatite concentrate, the distribution of REM in solutions of phosphoric acid (15-20%) and solid industrial waste - phosphogypsum (85-80%) occurs. Therein the larger half of more valuable heavy ...
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Thermoelectric Ceramics Based on the Layered Cobaltates of Bismuth and Alkaline Earth Metals
... Mn, Zn) solid solutions had been prepared, their lattice constants had been determined and their thermal expansion, electrical conductivity and thermo-EMF had been measured, and their power factor had been calculated. ...
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Heats of solution and related thermochemical properties of some rare earth metals and chlorides
... An isothermally jacketed calorimeter has been constructed to measure the changes in heat content accompanying the solution of some rare earth metals and compounds. To check the performance of the apparatus, ...
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Distribution of Rare Earth Metals in Technogenic Wastes of Energy Enterprises (Results of the Laboratory Studies)
... (rare earth metals) between foam and heavier products is going during the flotation process of carbon-containing ash and slag samples without significant ...rare earth elements in insoluble residue ...
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A calculation of the elastic constants of yttrium and the rare earth metals
... A modified cellular method developed by Raimes was extended to scandium, yttrium, and the rare earth metals. The assumption that the valence electrons are free and share the same ground state wave functions ...
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Infrared Polarizabilities of 3d Transition and Rare Earth Metals
... The static polarizabilities ( ω = 0 ) have been calculated for the jellium atoms of the transition metals and the rare earth metals. These are compared with the density functional-based code for the ...
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Thermal expansion of rare earth metals
... rare earth metals was undertaken as part of a broad program of study of these elements, the ultimate goal being better understanding of metals in ...these metals. The rare earth ...
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A thermodynamic study of the sulphates and related compounds of alkali and alkaline earth metals at high temperatures
... ratio of pore volume to total volume of powder and a is the vaporisation coefficient from a uniform plane surface which since aA* = Of , B gives powder Of =l,55€of^ powder The effect of [r] ...
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Electropolishing the rare earth metals
... Chemical oxidation is the principle method of etching a metal surface for microscopic examination and the rare earths were etched in this manner... At room temperature, the nitric acid-a[r] ...
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Preparation of rare earth metals
... The same experiments using a tantalum or molybdenum vessel showed no detectable contamination of the rare earth metal& Work conducted by Daane 11 at the Ames Laboratory, on methods of we[r] ...
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The ferromagnetic properties of the rare earth metals
... It is to be noted that these absolute saturation moments were obtained using data from the temperature range of 3l0 - 80°K only, and therefore only attempt to point out what the approxim[r] ...
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Automated ultrasound studies of magnetoelastic effects in rare earth metals and alloys
... The aim is to produce an automated ultrasound measurement system which can perform velocity and attenuation measurements as a function of temperature, frequency and applied magnetic fiel[r] ...
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The heats of combustion of some rare earth metals
... RESULTS OF COMBUSTION OF THE METALS The heat of combustion was determined from the temperature rise of the calorimeter, AT, and the water equivalent, W... where Qc = the heat leakage cor[r] ...
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Pentadentate N2O3 Schiff Base Complexes of Rare Earth Metals
... Schiff bases can be considered as a very important class of organic compounds due to their ability to form stable complexes with wide range of transition and rare-earth metal ions in different oxidation states via ...
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Microlayered Composite Materials on Basis of Copper, Refractory, Rare Earth Metals, and Carbon for Electrical Contacts and Electrodes
... refractory metals (tungsten, molybde- num or chromium) or carbon and moving the substrate out of the zone of vapor flow while it is rotating, it is possible to perform tempering from vapor and obtain materials ...
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Recovery of Rare Earths from Magnet Sludge by FeCl2
... rare earth metals are presently pro- duced by the rare earth oxide ...rare earth chlo- rides to oxychlorides is relatively ...rare earth oxychlorides to the corresponding oxides in a ...
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