Rhenium, alloyed with platinum, was used in petroleum-reforming catalysis in the production of high-octane hydrocarbons, used for lead free gasoline. Other applications are rhenium-tungsten alloys in X-raytubes and rotating X-ray anodes. Rhenium-molybdenum alloys are superconductors at a temperature of 10K.

Rhenium price, occurrence, extraction, applications. rhenium is a chemical element with the element symbol Re and the atomic number 75. In the periodic table of the elements it is in the 7th subgroup (group 7) or manganese group. It is a very rare, silver-white, shiny, heavy transition metal. Alloys with rhenium components are used in aircraft ...

The extended X-ray absorption fine structure (EXAFS) technique is used to study the local atomic structure around the solute atoms in a number of binary nickel alloys, with the solute atoms taken from the 5d series of transition metals.Particular emphasis is placed on the Ni–Re system, in view of the strong influence of Re on the high …

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A tungsten-rhenium alloy (90%:10% mix) forms the basis for the target in modern x-ray tubes, rhenium improves the durability of the target 4. tungsten is used as a shielding material for FDG by the radiopharmaceutical industry, although it has a lower atomic number than lead it mitigates this with a higher density 5.

Categories: Industry news Author: Origin: Time of issue: 11:09 Views: (Summary description) Tungsten Rhenium X Ray Anode Target refers to tungsten alloy targets used for anodes of medical X-ray tubes. At the same time, tungsten-rhenium targets are also widely used in magnetron sputtering.

Rhenium is a ductile, malleable, silvery metal. Ductile means capable of being drawn into thin wires. Malleable means capable of being hammered into thin sheets. It has a density of 21.02 grams per cubic centimeter, a melting point of 3,180 ° C (5,760 ° F), and a boiling point of 5,630 ° C (10,170 ° F).

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Classified in the periodic table under the symbol Re, atomic number 75, atomic mass of X g.mol-1, and electron configuration [Xe]4f145d56s2, rhenium is an extremely hard, and very dense silvery-white metal. It reaches its boiling point at 5590°C, 10094°F, 5863 K, while its very high melting point is achieved at 3185°C, 5765°F, 3458 K.

The Re was studied by energy-dispersive x-ray diffraction techniques in a diamond-anvil cell to pres-sures of 216 GPa using the Cornell High Energy Syn-chrotron Source (CHESS). The details of the experimen-tal technique are described by Brister, Vohra, and Ruoff. Diamonds of 300-pm culet diameter with a cen-tral fiat of 50— 60 pm diameter ...

Rhenium is one of the rarest elements in Earth's continental crust; its estimated average crustal abundance is less than 1 part per billion. Rhenium is a metal that has an extremely high melting point and a heat-stable crystalline structure. More than 80 percent of the rhenium consumed in the world is used in high-temperature superalloys, especially …

Tungsten-rhenium alloys are also used in X-ray anodes in high-resolution X-ray equipment – for example in mammography, angiography and computed tomography. Luminescent rhenium complexes have been used in intracellular bio-applications because of their efficient cellular internalisation and attractive photophysical properties.

The maximum solubility of rhenium in niobium has consequently been placed at 46 at-% rhenium, which is in good agreement with the value obtained by X-ray methods (Table IV, Fig. 5). The solubility of rhenium in niobium in the solid state is little affected by temperature, falling to ca. 43 at-% rhenium at iooo.

Rhenium is a chemical element. It has the chemical symbol Re. It has the atomic number 75. It is a rare noble metal. It is silver white. In chemistry it is placed in a group of metal elements called the transition metals. The chemistry of rhenium is similar to manganese. Discovered in 1908, rhenium was the second-last stable element to be ...

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Naturally occurring rhenium is a mixture of two isotopes: 185 Re (natural abundance: 37.07%) and the 187 Re (natural abundance: 62.93%). 3 Although representing the main constituent in natural rhenium sources, 187 Re is weakly radioactive with a β −-emission with the very long half-life of 5 × 10 10 yr. 4 The 187 Re/ 187 Os isotope …

Tungsten-rhenium alloy x-ray tube. The conical disk in this sample is a heavy slab of tungsten-rhenium alloy. The structure above holds a filament that releases electrons, which are accelerated with a high voltage to strike the tungsten-rhenium disk, generating x-rays when they strike. In operation the disk is spinning, because if it ever ...

An older 747-400 burns about 4 litres of kerosene per second, which we divide by 4 engines. Estimating the lifetime of a turbine blade at 10,000 hours, using rhenium would theoretically save us 460,000kg of CO2. This results in a net reduction of the carbon footprint of a jet turbine by 320,000kg CO2 over its lifetime. That's quite a …

Rhenium is used in the production of catalysts. ... Rhenium is a key element in the production of X-ray tubes. The unique properties of Rhenium, including its high melting point and excellent thermal conductivity, make it an indispensable material in the manufacturing of X-ray tubes. These tubes are vital in medical diagnostics and industrial ...

Rhenium is the 75th element in the periodic table and has a symbol of Re and atomic number of 75. It has an atomic weight of 186.207 and a mass number of 187. Rhenium has seventy-five protons and one hundred twelve neutrons in its nucleus, and seventy-five electrons in six shells. It is located in group seven, period six and block d of the ...

Rhenium. Rhenium (element #75, symbol Re) is a rare, silvery-white metallic element. Rhenium is found as a trace element in platinum ores and in the mineral columbite. It is very dense and has a melting temperature of 3186 degrees C (5767 degrees F). Rhenium does not form minerals of its own, but does occur as a trace element in the minerals ...

The chemistry of technetium and rhenium by Raymond Dixon Peacock, 1966, Elsevier Pub. Co. edition, in English. It looks like you're offline. Donate ♥. Čeština (cs) Deutsch (de) English (en) Español (es) Français (fr) ... Check-in dates are used to track yearly reading goals.

Rhenium is a ductile, malleable, silvery metal. Ductile means capable of being drawn into thin wires. Malleable means capable of being hammered into thin sheets. It has a density of 21.02 grams per cubic centimeter, a melting point of 3,180°C (5,760°F), and a boiling point of 5,630°C (10,170°F). These numbers are among the highest to be ...

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We are a global leader in providing Rhenium chemicals which are used to manufacturer critical parts and components. These are used in high-density, high-temperature parts for aerospace, defence, energy, and X-ray device industries. We supply three standard powders, Rhenium, Molybdenum-Rhenium, and Tungsten-Rhenium. Chemical name: …

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Uses. Rhenium is used as an additive to tungsten- and molybdenum-based alloys to give useful properties. These alloys are used for oven filaments and x-ray machines. It is also …

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Alloys containing rhenium are used for oven filaments and x-ray machines. The average atomic mass of naturally occurring rhenium is 186.21 amu. There are two common isotopes of naturally occurring rhenium. Using the information given in the table below, calculate the percent abundance of naturally occurring rhenium.

Pointing the Chemical Properties of Rhenium. The electronic configuration is Xe X e 4f14 5d5 6s2. 75 is the atomic number of Rhenium. 3185°C, 5765°F and 3458 K is the Melting point. Atomic mass is 186.23 g.mol -1. The Relative atomic mass is 186.207. The Boiling point is 5590°C, 10094°F, and 5863 K.

The scans were repeated using 0.1 to 1.6 mm thick copper filters to harden the X-ray beam. A rhenium-doped scaffold was prepared via electrospinning, used to coat catheters, and imaged at 90 kVp by µCT. Results: I-XCA have a greater contrast-to-noise ratio (CNR) at 50 and 80 kVp, but Re-XCA have a greater CNR at >120 kVp. The …

The chemistry of rhenium is rather diverse. Among other things, it shows the largest range of oxidation states of any known element, namely −1, 0, +1, +2 and so on all the way up to +7 — the ...

The most important application area of W–Re alloys is in medical technology. W–Re alloys with 3–10% rhenium are used as focal tracks in rotating X-ray anodes, e.g., for CT. Molybdenum–rhenium alloys . Oxide dispersion strengthened (ODS) Footnote 10 molybdenum alloys possess excellent high-temperature strength and creep resistance. …