High resolution electron microscopy characterization of sulfided palladium particles on amorphous SiO2

1994 ◽  
Vol 28 (2-4) ◽  
pp. 351-360 ◽  
Author(s):  
A. V�zquez ◽  
M. J. Ya�ez ◽  
S. Fuentes ◽  
M. Avalos-Borja
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
High Resolution Electron Microscopy ◽  
Amorphous Sio2 ◽  
Resolution Electron ◽  
Microscopy Characterization ◽  
Palladium Particles

High-resolution Electron Microscopy characterization of chemically derived titanium aluminide nanomaterials

1994 ◽  
Vol 52 ◽  
pp. 756-757
Author(s):  
Y.-M. Pan ◽  
P. P. Paul ◽  
S. T. Schwab
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Titanium Aluminide ◽  
Titanium Aluminides ◽  
High Resolution Electron Microscopy ◽  
Full Potential ◽  
Resolution Electron ◽  
Microscopy Characterization ◽  
Hexane Solution

Titanium aluminides are a class of intermetallics whose application to a variety of advanced structures may yield substantial improvements in system performance. Before titanium aluminides can realize their full potential, a number of deficiencies such as lack of ductility must be overcome through improved processing. Difficulties inherent in traditional methods have prompted the development of the ultrastructure approach to materials processing. Chemical processing has best potential for ultrastructure control because articles are constructed from atomic level up. The availability of nanostructured materials may be essential to the development of intermetallics with acceptable levels of ductility. The focus of this work is to use high resolution electron microscopy (HREM) techniques to characterize the structure and chemistry of the chemically-derived, nanocrystalline intermetallic powders that have potential to enable ultrastructure processing of advanced intermetallics and alloys.In an attempt to produce salt-free TiAl3, a dilute hexane solution of Ti[N(SiMe3)2]3 was combined with an excess of (AIH3) at room temperature to yield a very fine, steel-gray powder.

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