APAKAH MAKSUD RHENIUM dalam CORSICA?
Rhenium
Rhenium adalah unsur kimia dengan simbol Re dan nombor atom 75. Ia adalah logam peralihan berwarna putih, berat, dan ketiga dalam kumpulan 7 jadual berkala. Dengan anggaran purata kepekatan 1 bahagian per bilion, rhenium adalah salah satu unsur paling jarang dalam kerak Bumi. Unsur bebas mempunyai titik lebur tertinggi ketiga dan titik mendidih tertinggi bagi setiap elemen. Rhenium menyerupai mangan dan technetium secara kimia dan diperolehi sebagai hasil sampingan daripada pengeluaran dan penyempurnaan bijih molibdenum dan bijih tembaga. Rhenium menunjukkan dalam sebatiannya pelbagai negara pengoksidaan antara -1 hingga +7. Ditemui pada tahun 1925, rhenium merupakan unsur terakhir yang stabil untuk ditemui. Ia dinamakan sempena Sungai Rhine di Eropah. Superalloy rhenium yang berasaskan nikel digunakan di dalam ruang pembakaran, bilah turbin, dan muncung ekzos enjin jet. Aloi ini mengandungi rhenium sehingga 6%, menjadikan enjin jet membina penggunaan tunggal terbesar bagi elemen ini, dengan penggunaan pemangkin industri kimia menjadi yang paling penting.
Definisi rhenium dalam kamus Corsica
Takrif renium dalam kamus adalah unsur metalik keperakan putih yang padat yang mempunyai titik lebur yang tinggi. Ia berlaku terutamanya dalam gadolinit dan molibdenit dan digunakan, digabungkan dengan tungsten atau molibdenum, dalam suhu tinggi suhu termokopel. Simbol: Re; atom tidak: 75; atom wt: 186.207; valensi: -1 atau 1-7; ketumpatan relatif: 21.02; lebur pt: 3186 ° C; mendidih pt: 5596 ° C.
CORSICA BUKU YANG BERKAIT DENGAN «RHENIUM»
Ketahui penggunaan
rhenium dalam pilihan bibliografi berikut. Buku yang berkait dengan
rhenium dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
1
Heat-resistant Materials
Because of its hep structure, rhenium has a high solubility in transition metals
having bec and face-centered cubic (fee) structures. This characteristic was used
to advantage in the development of tungsten-rhenium and molybdenum-rhenium
...
2
Rhenium: Dvi-manganese, the Element of Atomic Number 75
CHAPTER ni THE 0XIDES 0F RHENIUM The following oxides of rhenium have
been reported: Re04, or Re2Oe Rhenium tetroxide, or octoxide Re207 Rhenium
heptoxide Re03 Rhenium trioxide Re3Os — Re205 Rhenium pentoxide Re02 ...
3
The Radiochemistry of
Rhenium
Rhenium metal does not form hydrides or nitrides . It will combine with
phosphorus, arsenic, silicon and tungsten to form compounds; it will form mixed
crystals only with chromium. Hydrochloric and hydrofluoric acids do not dissolve
rhenium ...
4
The History and Use of Our Earth's Chemical Elements: A ...
Common Uses Small quantities of rhenium are alloyed with iron to form steel that
is both hard and resistant to wear and high-temperatures. Because of its high
melting point, rhenium is used in many applications where long-wearing, ...
5
Dictionary of Inorganic Compounds, Supplement 3
IC-300323 C8H40,ReS4e Bis[2,3-dimercaptobutanedioato(4 — )-S,S4
oxorhenatefS-), IC-200384 C8H10BF4O5Re Tetracarbonyl(diethyl ether)(
tetrafluoroborato) rhenium(/). IC-300337 C,HI6Cl402Re Tetrachlorobis(
tetrahydrofuran-O) ...
6
Encyclopaedia of Occupational Health and Safety: Industries ...
Occurrence and Uses Rhenium (Re) is found in the combined state in platinum
ores, gadolinite, molybdenite (MoS2) and columbite. It is found in some sulphide
ores. It is a rare element making up about 0.001 ppm of the Karth's crust.
Jeanne Mager Stellman,
1998
7
Encyclopedia of Materials, Parts and Finishes, Second Edition
However, even below the transition temperature for the recrystallized material,
the ductility of the rhenium-tungsten alloys is higher than that of pure tungsten.
FABRICATION Rhenium cannot be machined by conventional methods because
it ...
8
Extractive Metallurgy of Molybdenum
It is for this reason that rhenium is the only foreign element present in
molybdenite crystals (molybdenum and rhenium atoms have almost equal radti of
1.39 A and 1.37 A. respectively, and their ionic radti have the identical value of
0.68 A).
(a) MH6 (c) [ReH2(PR3)3]2 Halogen compounds As can be seen from Table 125,
only three technetium halides (TcF6, TcF5 and TcCl4) have been characterized (
TcCl6 and TcBr4 are still questionable), but thirteen rhenium halides are ...
Egon Wiberg, Nils Wiberg,
2001
10
Minerals Yearbook, 2008, V. 1, Metals and Minerals
U.S. estimated rhenium production increased by about 11%, while apparent
consumption of rhenium increased by about 7% from that of 2007 (table 1 ).
World production of rhenium in 2008 was estimated to be about 56,500 kilograms
(kg), ...
Geological Survey (U S ),
2011
BARANGAN BERITA YANG TERMASUK TERMA «RHENIUM»
Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah
rhenium digunakan dalam konteks perkara berita berikut.
Roskill Publishes its new Market Outlook for Rhenium; Forecasts …
Rhenium primary supply is almost entirely as a by-product of copper or molybdenum production and is highly inelastic; since 2006 primary supply has averaged ... «PR Newswire, Jul 15»
Investing in Rhenium
You see, rhenium is a metal that's required for everything from military and aviation applications to oil and gas production. It's used in all kinds of various tech ... «Wealth Daily, Jun 15»
Rhenium (PC) - Top down 2D survival shooter
Hey everyone! I've been working on a PC game project for a while now and I wanted to share what I've done so far and where it's headed. First up, Rhenium is ... «GameDev.net, Jun 15»
The metal that brought you cheap flights
But rhenium also happens to be one of the scarcest substances on earth. It forms only one part per billion of the earth's crust. The entire annual worldwide ... «BBC News, Mei 15»
Liposomal Encapsulation of Radiotherapeutics Holds Promise in …
Rhenium-186 (186Re) is a reactor-produced isotope with great potential for medical therapy if it can be successfully delivered. It is in the same chemical family ... «OncLive, Apr 15»
Flüssiggas boomt: Investitionen in Rhenium lohnenswert
Der hier erwartete Boom von Flüssiggas hat signifikante Auswirkungen auf den zukünftigen Rheniumbedarf. Rhenium findet gleich an zwei Stellen Einsatz bei ... «Sachwert Magazin, Mac 15»
AOK bietet neue Behandlungsmethode bei Arteriosklerose an
Genau hier setzt die neue Behandlungsmethode an, das heißt, erst bei einer Re-Stenose kommt die Rhenium-PTA zum Einsatz. „Beim ersten Eingriff mit einem ... «Main-Post, Nov 14»
Metalbulletin.com / Rhenium demand rises on $690m supply deal
Rhenium demand picked up this week, on the back of an announcement that the world's largest rhenium producer signed a $690 million supply agreement with ... «Metalbulletin.com, Sep 14»
US expert says China close to producing fighter engines
In his newest article published on June 16, Perrett said that China needs large supplies of rhenium — a rare metal that increases the temperature-resistance of ... «WantChinaTimes, Jun 14»
Rhenium Disulfide latest Two-dimensional Semiconductor Discovery
rhenium disulfide diffraction Researchers at Lawrence Berkeley National Lab's Molecular Foundry have discovered a novel new two-dimensional semiconductor ... «Tech Fragments, Mac 14»