High-throughput preparation and electrochemical screening of nanocrystalline Fe-Cr-Ni material libraries with homogeneous element distribution

2013 ◽

Vol 291-294 ◽

pp. 2613-2616

Author(s):

Hong Mei Zhu ◽

Ru Shu Peng ◽

Chao Hui Weng

Keyword(s):

Heat Treatment ◽

Electron Microscope ◽

Laser Power ◽

Homogeneous Element ◽

Element Distribution ◽

Laser Remelting ◽

Microstructure Morphology ◽

The Given ◽

Scanning Electron ◽

Microhardness Tester

The 45 steel was processed by laser remelting after the carbonitriding heat treatment in this study. The microstructure morphology and microhardness of the laser-remelting layer at different laser powers were investigated by scanning electron microscope (SEM) and microhardness tester, respectively. The results show that a compact microstructure and a homogeneous element distribution can be achieved at the laser power of 1.2 kW under the given other laser parameters, and the microhardness was enhanced greatly.

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A low-temperature formation path toward highly efficient Se-free Cu2ZnSnS4 solar cells fabricated through sputtering and sulfurization

CrystEngComm ◽

10.1039/c5ce02279g ◽

2016 ◽

Vol 18 (6) ◽

pp. 1070-1077 ◽

Cited By ~ 30

Author(s):

Ye Feng ◽

Tsz-Ki Lau ◽

Guanming Cheng ◽

Ling Yin ◽

Zhaohui Li ◽

...

Keyword(s):

Solar Cells ◽

Low Temperature ◽

Homogeneous Element ◽

Element Distribution ◽

Thickness Direction ◽

Highly Efficient

CZTS absorbers fabricated via the low-temperature formation path resulted in more homogeneous element distribution across the thickness direction with much less ZnS segregation near the CZTS/Mo interface.

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NOVEL COMPOSITE-BASED CATHODES FOR MOLTEN CARBONATE FUEL CELLS BY ELECTROCHEMICAL MULTICOMPONENT MODIFICATION

Functional Materials Letters ◽

10.1142/s1793604711002263 ◽

2011 ◽

Vol 04 (04) ◽

pp. 383-387 ◽

Cited By ~ 1

Author(s):

LI-JIANG CHEN ◽

HAI-HUA LIU ◽

XIAO-LING DONG ◽

XIAO-PING HONG ◽

YAN-RONG JIA ◽

...

Keyword(s):

Fuel Cells ◽

Ph Value ◽

Homogeneous Element ◽

Element Distribution ◽

Molten Carbonate ◽

Porous Nickel ◽

Ternary Composite ◽

Deposition Voltage ◽

Molten Carbonate Fuel Cells ◽

Suspension Ph

A multicomponent modification on the surface of porous nickel with nanoparticles is conducted by an electrophoretic deposition (EPD) technique to prepare new composite-based cathodes for molten carbonate fuel cells (MCFCs). Two new ternary composite-based cathodes, (nano- LiCoO2-LiFeO2 )- Ni and (nano- LiCoO2-CeO2 )- Ni , are inclined to possess good morphology and homogeneous element distribution when prepared under moderate current density resulting from a medium deposition voltage and suspension pH value in this work. Both composite-based cathodes manifest excellent anti-deformation and anti-dissolution performances under conditions of a simulated MCFC startup stage and are thus expected to be useful for application in the MCFC industry.

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Electron spectroscopic imaging (ESI) on multiphase polymer materials

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153713 ◽

1989 ◽

Vol 47 ◽

pp. 348-349

Author(s):

H.-J. Cantow ◽

M. Kunz ◽

M. Möller

Keyword(s):

Energy Loss ◽

Melt Spinning ◽

Chromatic Aberration ◽

Element Distribution ◽

Polymer Materials ◽

Specific Energy Loss ◽

Transmission Electron ◽

Multicomponent Polymer ◽

Diffraction Patterns ◽

Image Planes

In transmission electron microscopy the natural contrast of polymers is very low. Thus the contrast has to be enhanced by staining with heavy metals. The resolution is limited by the size of the staining particles and by the fact that electrons with different energy are focused in different image planes due to the chromatic aberration of the magnetic lenses. The integration of an electron energy loss spectrometer into the optical coloumn of a transmission electron microscope offers the possibility to use monoenergetic electrons and to select electrons with a certain energy for imaging. Thus contrast and resolution are enhanced. By imaging only electrons with an element specific energy loss the element distribution in the sample can be obtained. In addition, elastic bright field images and diffraction patterns yield excellent resolution. Some applications of the method on multicomponent polymer materials are discussed.Bulk polymer samples were prepared by ultramicrotoming at room temperature or well below the glass transition temperature. Very thin films for the direct observation of the structure in semicrystalline polymers were obtained by melt-spinning. Specimens were examined with a ZEISS CEM 902 operated at 80 kV.

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