ETIMOLOGIA CUVÂNTULUI SPINEL
From French spinelle, from Italian spinella, diminutive of spina a thorn, from Latin; so called from the shape of the crystals.
CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «SPINEL»
Descoperă întrebuințarea
spinel în următoarea selecție bibliografică. Cărți în legătură cu
spinel și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
1
Understanding Solids: The Science of Materials
The formula of the oxide spinels, AB2O4, is satisfied by a number of
combinations of cations, the commonest of which is A2+ and S3+, typified by
Mg2+ and A13+ in spinel itself. In each unit cell there are the same number of
octahedral sites as ...
Richard J. D. Tilley, 2004
2
High Power 4.7 V Nanostructured
Spinel Lithium Manganese ...
Finally, elevated temperature performance of spinel electrodes was studied. A plausible scenario for the failure mechanism of battery cells was suggested.
Spinel Color: Red, orange, yellow, brown, blue, magnesium aluminium oxide
violet, purple, green, black Transparency: transparent to opaque Color of streak:
White Refractive index: 1.712-1.762 Mohs' hardness: 8 Double refraction: None ...
4
Ionic Conductivity Measurement in Magnesium Aluminate
Spinel ...
Higher conductivity of Mg cation than Al cation is in agreement with self-diffusion data reported in the literatures.
5
Understanding the Capacity Fade Mechanisms of
Spinel ...
Won Chang Choi. NO2BF4. The incorporation of protons into layered Li1-xCoO2
and Li1- xMn1/3Ni1/3Co1/3O2 is to relieve the chemical instability arising from a
significant overlap of the Co 3+/4+:3d band with the top of the O2-:2p band, and ...
6
Gems and Gemstones: Timeless Natural Beauty of the Mineral World
The largest red Spinel gem is the Samarian Spinel, an unfaceted stone of 500
carats in the Crown Jewel Collection of Iran. In 2007 a giant red Spinel crystal
weighing 52 kilograms (115 pounds) was discovered in Tanzania. Although only
...
Lance Grande, Allison Augustyn, 2009
7
An Introduction to Mineral Sciences
Common oxide minerals with the spinel structure commercial magnetic oxides.
The reason for this flexibility can be found by looking at the site occupancies in
more detail. Within the space group of spinel (Fd3m) the fractional coordinates of
...
8
Gems: Their Sources, Descriptions and Identification
It was not until the 1930s that spinel became commercially significant. Natural
spinel, except for the red variety, has no great use in jewellery and a simple
simulation of the spinel would have had no especial value. The synthetic spinel is
...
9
Development of Synthesis Method for
Spinel Ferrite Magnetic ...
CHAPTER 7 SYNTHESIS AND CHARACTERIZATION OF VARIOUS SPINEL
FERRITES VIA AMINOLYTIC REACTION Abstract Development of versatile,
inexpensive, environment friendly, and large-scale synthesis methods for spinel
ferrite ...
10
Rock-forming Minerals in Thin Section
Spinel MgAl2O4 cubic-hexaoctahedral Hercynite FeAl,O4 Picotite (Mg,Fe)(Al, Fe,
Cr)2O4 Chromite FeCr2O4. General features: divided into three subgroups:
Aluminospinel or spinel s.s. (spinel, hercynite, pleonaste). ferrospinel (magnetite;
...
Hans Pichler, Cornelia Schmitt-Riegraf, 1997
ȘTIRI NOI CARE INCLUD TERMENUL «SPINEL»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
spinel în contextul următoarelor știri.
Navy researches use of transparent material as armor
"Spinel is actually a mineral; it's magnesium aluminate," said Dr. Jas Sanghera, the researcher leading the NRL project. "The advantage is it's so much tougher, ... «UPI.com, Iul 15»
Clean Diesel Technologies (CDTI) Soaring on Spinel Technology …
"In addition, analysis of the post-test catalysts have provided insights into further improvements, reinforcing the possibility that Spinel eventually might be able to ... «TheStreet.com, Iun 15»
Durable, Tough & Strong: It's Spinel!
“Spinel is actually a mineral, it's magnesium aluminate,” said Dr. Jas Sanghera, who leads the research. “The advantage is it's so much tougher, stronger, harder ... «Armed with Science, Mai 15»
Jas Sanghera: US Naval Research Lab Plans Ceramic Material …
research and development RD The U.S. Naval Research Laboratory intends to transition to industry a special ceramic material called spinel which research lead ... «ExecutiveGov, Mai 15»
Smartphone news: cracked screens could be banished thanks to …
But unlike traditional bulletproof glass, which is manufactured by combining alternate layers of plastic sheeting and glass, Spinel does not block the infrared ... «Ecumenical News, Mai 15»
Rare Black Spinel Necklace Appears On FOX's 'Gotham'
The necklace is made of hand-woven 18k gold, black spinel and emerald beads with two large boulder peacock-colored opals as a centerpiece. The 15-inch ... «Forbes, Mai 15»
Affordable Star Trek-like transparent aluminum could protect phones …
Researchers at the US Naval Research Laboratory (NRL) have announced a breakthrough in the construction of spinel, also known as transparent aluminum. «ExtremeTech, Apr 15»
US Navy invents bulletproof glass from clay that could revolutionise …
The material, known as Spinel, is made from a special type of synthetic powdered clay and is bulletproof. The US Naval Research Laboratory (NRL) has been ... «International Business Times UK, Apr 15»
Researchers finding applications for tough spinel ceramic
The U.S. Naval Research Laboratory uses a hot press to make spinel into conformable optics, like this flat sheet. "Ultimately, we're going to hand it over to ... «Phys.Org, Apr 15»
Transparent Ceramics
Aluminum oxynitride and magnesium aluminate spinel are mechanically strong, hard and scratch resistant; they are also chemically durable. Both exhibit ... «Photonics.com, Feb 15»
