Results 251 to 260 of about 121,070 (292)
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Aluminium nitride by carbothermal nitridation
Materials Science and Engineering: A, 1989Abstract The different steps in the preparation of aluminium nitride powder by carbothermal nitridation of alumina are described. The parameters influencing the kinetics of the basic transformation of the oxide are listed and illustrated. The reaction rate depends on the degree of homogeneity of the solid mixture of raw materials or, adversely, is ...
R. Bachelard, P. Joubert
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Niobium nitride/aluminum nitride superlattices
SPIE Proceedings, 1998ABSTRACT DC reactive magnetron sputtering has been used to prepare niobium nitride/aluminium nitride superconductor/insulatorsuperlattices. Deposition conditions were optimized in order that multilayer fabrication could be achieved by simplecomputer control of the substrate positioning beneath each sputtering target.Transport measurements in the mixed ...
Zoe H. Barber +4 more
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Reduction‐Nitridation Synthesis of Titanium Nitride Nanocrystals
Journal of the American Ceramic Society, 2003Titanium nitride (TiN) particles (8 nm) were prepared via a reduction‐nitridation route in an autoclave at 500°C, using TiCl 4 , NH 4 Cl, and metal Na as reactants.
Xiaogang Yang +4 more
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ELASTIC BEHAVIOUR OF PARTICULATE NITRIDE-NITRIDE OR BORIDE-NITRIDE COMPOSITES
1999High density refractory AlN-TiN, AlN-TiB2 and TiN-TiB2 composites, as well as the monolithic ceramics : i.e. aluminium nitride AlN, titanium nitride TiN and titanium diboride TiB2 were elabored by Hot Isostatic Pressing.Measurements of the Young's and Shear moduli of these polycrystalline materials were performed at room temperature by an ultrasonic ...
E. Fenard +4 more
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Science, 2004
A highly regular mesh of hexagonal boron nitride with a 3-nanometer periodicity and a 2-nanometer hole size was formed by self-assembly on a Rh(111) single crystalline surface. Two layers of mesh cover the surface uniformly after high-temperature exposure of the clean rhodium surface to borazine (HBNH) 3 .
Martina, Corso +5 more
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A highly regular mesh of hexagonal boron nitride with a 3-nanometer periodicity and a 2-nanometer hole size was formed by self-assembly on a Rh(111) single crystalline surface. Two layers of mesh cover the surface uniformly after high-temperature exposure of the clean rhodium surface to borazine (HBNH) 3 .
Martina, Corso +5 more
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ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Golberg, Dmitri +3 more
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Golberg, Dmitri +3 more
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III-Nitride High Voltage Nitride Electronics
ECS Transactions, 2013The recent development of low dislocation density Aluminum Nitride (AlN) substrates allows the realization of a new class of majority carrier power devices. Majority carrier devices based on AlxGa1-xN grown on AlN substrates will be able to operate with breakdown voltages in excess of 20KV. A significant challenge to the development of these devices is
Michael Spencer, William Schaff
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Physical Review Letters, 2010
We report the synthesis, structure, and properties of novel bulk rhenium nitrides, hexagonal Re2N, and Re3N. Both phases have very high bulk moduli of >400 GPa, similar to the most incompressible binary transition-metal (TM) carbides and nitrides found to date. However, in contrast to other incompressible TM carbides and nitrides, Re3N is better placed
Alexandra, Friedrich +8 more
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We report the synthesis, structure, and properties of novel bulk rhenium nitrides, hexagonal Re2N, and Re3N. Both phases have very high bulk moduli of >400 GPa, similar to the most incompressible binary transition-metal (TM) carbides and nitrides found to date. However, in contrast to other incompressible TM carbides and nitrides, Re3N is better placed
Alexandra, Friedrich +8 more
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Science, 1995
The successful synthesis of pure boron nitride (BN) nanotubes is reported here. Multi-walled tubes with inner diameters on the order of 1 to 3 nanometers and with lengths up to 200 nanometers were produced in a carbon-free plasma discharge between a BN-packed tungsten rod and a cooled copper electrode.
N G, Chopra +6 more
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The successful synthesis of pure boron nitride (BN) nanotubes is reported here. Multi-walled tubes with inner diameters on the order of 1 to 3 nanometers and with lengths up to 200 nanometers were produced in a carbon-free plasma discharge between a BN-packed tungsten rod and a cooled copper electrode.
N G, Chopra +6 more
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Titanium nitride-molybdenum metallizing method for aluminium nitride
Proceedings. Japan IEMT Symposium, Sixth IEEE/CHMT International Electronic Manufacturing Technology Symposium, 1990A paste containing molybdenum (Mo) and titanium nitride (TiN) powders was printed on aluminium nitride (AlN) substrates and fired. The adhesive strength of substrates metallized with Ni/Au plate was about 25 kg/2.5 mm/sup 2/ and was unchanged after a thermal cycle test.
H. Asai +8 more
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