scholarly journals Cluster model of the formation of aluminum nitride in alumina nanoreactors

2011 ◽  
Vol 16 (4) ◽  
Author(s):  
V.Y. Hlotov ◽  
P.V. Deminskij ◽  
N.O. Lyahova ◽  
I.V. Masol ◽  
V.I. Osinskij

The non-traditional method of obtainingclusters of heterogenous and homogenous nanooxides, nitrides of aluminum by substitution ofoxygen atoms with low-energy nitrogen ions inthe solid phase inside the nanopores of aluminum oxide Al2O3 (nanosapfire) is proposed and implemented. The AlN, AlNxO1-x, Al2O3 nanolayers was experimentally obtained

2016 ◽  
Vol 18 (1) ◽  
pp. 458-465 ◽  
Author(s):  
Hisao Kiuchi ◽  
Takahiro Kondo ◽  
Masataka Sakurai ◽  
Donghui Guo ◽  
Junji Nakamura ◽  
...  

The well-controlled nitrogen doped graphite with graphitic nitrogen located in the zigzag edge and/or vacancy sites can be realized using the low energy nitrogen sputtering. The doping mechanism of nitrogen ions is also discussed.


2013 ◽  
Vol 781-784 ◽  
pp. 357-361 ◽  
Author(s):  
Igor V. Khromushin ◽  
Taтiana I. Aksenova ◽  
Turgora Tuseyev ◽  
Karlygash K. Munasbaeva ◽  
Yuri V. Ermolaev ◽  
...  

The effect of irradiation with heavy ions Ne, Ar, and Kr of various energies on the structure and properties of ceramic barium cerate doped with neodymium and annealed in air at 650°C for 7 hours is studied. It is noted that blistering was observed on cerate surface during its irradiation by low energy Ne ions, whereas it was not observed under low-energy Ar and Kr ions irradiation. Irradiation of the cerate with high energy ions caused partial amorphization of the irradiated surface of the material, while the structure of the non-irradiated surface did not change. In addition, the irradiated surface of the cerate endured solid-phase structural changes. Thus, upon high-energy ions irradiation in the range of Ne, Ar, Kr the cerate surface resembled the stages of spherulite formation - nucleation, growth (view of cauliflower), formation of spherulitic crust, respectively. The increase in water molecules release and reduction of molecular oxygen release from the barium cerate, irradiated by high-energy ions is found during vacuum constant rate heating. It is concluded that cerates undergo changes to the distances significantly exceeding the ion ranges in these materials. Features of high-energy ions influence on thermal desorption of carbon dioxide from cerates show, apparently, the formation of weakly bound carbonate compounds on the cerate surface in the irradiation process.


2005 ◽  
Vol 44 (8) ◽  
pp. 6277-6282
Author(s):  
Koji Futagami ◽  
Taichiro Fukumori ◽  
Noboru Tsukuda ◽  
Kiyohiro Kuroki

2016 ◽  
Vol 186 (5) ◽  
pp. 520 ◽  
Author(s):  
Surakarn Choofong ◽  
Pierre Cloutier ◽  
Léon Sanche ◽  
J. Richard Wagner

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