Shape Symmetrization and IR-Spectral Enhancement of Aluminum Clusters via Doping with a Carbon Core

2021 ◽  
Author(s):  
Fedor Y. Naumkin
Keyword(s):  
Aluminum Clusters ◽  
Spectral Enhancement ◽  
Carbon Core

TEM of grain growth and phase transformations during creep of SCS-6 silicon carbide fibers

1995 ◽  
Vol 53 ◽  
pp. 350-351
Author(s):  
L. A. Giannuzzi ◽  
C. A. Lewinsohn ◽  
C. E. Bakis ◽  
R. E. Tressler
Keyword(s):  
Silicon Carbide ◽  
Creep Rate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Primary Creep ◽  
Excess Carbon ◽  
Silicon Carbide Fibers ◽  
Sic Fiber ◽  
Carbon Core ◽  
Grain Width

The SCS-6 SiC fiber is a 142 μm diameter fiber consisting of four distinct regions of βSiC. These SiC regions vary in excess carbon content ranging from 10 a/o down to 5 a/o in the SiC1 through SiC3 region. The SiC4 region is stoichiometric. The SiC sub-grains in all regions grow radially outward from the carbon core of the fiber during the chemical vapor deposition processing of these fibers. In general, the sub-grain width changes from 50nm to 250nm while maintaining an aspect ratio of ~10:1 from the SiC1 through the SiC4 regions. In addition, the SiC shows a <110> texture, i.e., the {111} planes lie ±15° along the fiber axes. Previous has shown that the SCS-6 fiber (as well as the SCS-9 and the developmental SCS-50 μm fiber) undergoes primary creep (i.e., the creep rate constantly decreases as a function of time) throughout the lifetime of the creep test.

CHAMPION 1A

Alloy Digest ◽  
1990 ◽  
Vol 39 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Properties ◽  
Heat Treating ◽  
Core Wire ◽  
Wire Electrode ◽  
Low Carbon ◽  
Carbon Core

Abstract Champion 1A is a flux coated, extra-low carbon core wire electrode developed to overcome many of the difficulties associated with welding chrome-moly and hard-to-weld steels. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on heat treating and joining. Filing Code: SA-451. Producer or source: Champion Welding Products Inc..

scholarly journals Argon tagging of doubly transition metal doped aluminum clusters: The importance of electronic shielding

2021 ◽  
Vol 154 (5) ◽  
pp. 054312
Author(s):  
Jan Vanbuel ◽  
Piero Ferrari ◽  
Meiye Jia ◽  
André Fielicke ◽  
Ewald Janssens
Keyword(s):  
Transition Metal ◽  
Aluminum Clusters ◽  
Metal Doped

scholarly journals Preparation and application of carbon and hollow TiO2 microspheres by microwave heating at a low temperature

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 200-209
Author(s):  
Caiyun Zhang ◽  
Chunhong Li ◽  
Bolin Ji ◽  
Zhaohui Jiang
Keyword(s):  
Low Temperature ◽  
Microwave Heating ◽  
Raw Material ◽  
Carbon Microspheres ◽  
Microwave Assisted ◽  
The Core ◽  
Good Crystallinity ◽  
Carbon Core ◽  
Microwave Assisted Method ◽  
Uniform Particle Size

Abstract A fast, simple, and energy-saving microwave-assisted approach was successfully developed to prepare carbon microspheres. The carbon microspheres with a uniform particle size and good dispersity were prepared using glucose as the raw material and HCl as the dehydrating agent at low temperature (90°C) in an open system with the assistance of microwave heating. The carbon microspheres were characterized by elemental analysis, XRD, SEM, FTIR, TG, and Raman. The results showed that the carbon microspheres prepared under the condition of 18.5% (v/v) HCl and heating for 30 min by microwave had a narrow size distribution. The core–shell structure of the carbon core and TiO2 shell was prepared with (NH4)2TiF6, H3BO3 using the microwave-assisted method. The hollow TiO2 microspheres with good crystallinity and high photocatalytic properties were successfully prepared by sacrificing the carbon microspheres.

scholarly journals Wideband Spectral Enhancement through on‐chip Bragg‐Soliton Dynamics

2021 ◽  
pp. 2100107
Author(s):  
Ezgi Sahin ◽  
Andrea Blanco-Redondo ◽  
Byoung-Uk Sohn ◽  
Yanmei Cao ◽  
George F. R. Chen ◽  
...  
Keyword(s):  
Soliton Dynamics ◽  
Spectral Enhancement ◽  
On Chip

SINGLE-STEP SYNTHESIS OF COBALT-OXIDE SHELLED NANOCARBONS

2005 ◽  
Vol 04 (04) ◽  
pp. 591-598
Author(s):  
LIHONG LIU
Keyword(s):  
Cobalt Oxide ◽  
Cobalt Complex ◽  
Single Step ◽  
Complexing Agent ◽  
Solid State Method ◽  
Shell Nanostructures ◽  
Air Atmosphere ◽  
State Method ◽  
Oxide Matrix ◽  
Carbon Core

In this paper, we report a simple solid-state method for fabricating cobalt-oxide–carbon core-shell nanostructures. With this technique, various forms of nanocarbons such as nanotubes, polyhedrons and onions can be generated via pyrolyzing cobalt–complex xerogels at 150 ~ 340°C. The thus-formed nanocarbons can be protected by cobalt-oxide matrix up to 1000°C in air atmosphere. Cobalt-oxide shelled or unshelled nanocarbons can be controlled by choosing a suitable complexing agent for the xerogel precursors. In particular, glycine has been proven to be a good complexing agent for low-temperature formation of unshelled nanocarbons and high-temperature generation of shelled nanocarbons.

Appearance size of poly-anionic aluminum clusters, Aln z-, z = 2–5*

2013 ◽  
Vol 67 (2) ◽  
Author(s):  
Franklin Martinez ◽  
Steffi Bandelow ◽  
Christian Breitenfeldt ◽  
Gerrit Marx ◽  
Lutz Schweikhard ◽  
...  
Keyword(s):  
Aluminum Clusters

Synthesis and characterization of belt-like VO2(B)@carbon and V2O3@carbon core–shell structured composites

2012 ◽  
Vol 396 ◽  
pp. 144-152 ◽  
Author(s):  
Yifu Zhang ◽  
Fangfang Zhang ◽  
Lei Yu ◽  
Meijuan Fan ◽  
Yalan Zhong ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Core Shell ◽  
Carbon Core
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