Effect of alloying on the structural stability of Ni?W Co?W composite materials

1977 ◽  
Vol 19 (5) ◽  
pp. 343-348 ◽  
Author(s):  
B. A. Klypin ◽  
A. M. Maslov ◽  
S. B. Maslenkov
Keyword(s):  
Composite Materials ◽  
Structural Stability ◽  
Effect Of Alloying

Structural stability of reinforced nickel-base composite materials

1969 ◽  
Vol 8 (12) ◽  
pp. 1002-1005
Author(s):  
I. N. Frantsevich ◽  
D. M. Karpinos ◽  
V. A. Bespyatyi
Keyword(s):  
Composite Materials ◽  
Structural Stability ◽  
Base Composite ◽  
Nickel Base

Structural Stability of Composite Materials Prepared by Explosion Welding after their Heat Treatment

2010 ◽  
Vol 297-301 ◽  
pp. 1171-1176
Author(s):  
Martin Tršo ◽  
Michal Benák ◽  
Milan Turňa ◽  
Peter Nesvadba
Keyword(s):  
Composite Materials ◽  
Carbon Steel ◽  
Structural Stability ◽  
Elevated Temperatures ◽  
Welding Process ◽  
Explosion Welding ◽  
Industrial Chemistry ◽  
Bond Quality ◽  
Structural Carbon ◽  
Structural Carbon Steel

As is well known, the explosion welding is considered for a specific type of cold pressure welding. Welded joints fabricated by this technology show a typical undulated boundary, which characterises both, the welding process and bond quality. This technology allows to weld a relatively wide assortment of combinations of various metals and their alloys [1,2]. This contribution presents the technological procedure for preparation of composite materials based on three metals (trimetals) by use of industrial explosive Semtex S. It concerns the trimetals as structural carbon steel-Cu-Al and structural carbon steel-Ti-Al. For the anodes and cathodes of electrolysers, used for manufacture of aluminium, mostly bimetals were used up to now, as for example the structural carbon steel – Al. However, the mentioned trimetals exert certain priorities over bimetals, regarding mainly the structural stability at elevated temperatures. This also results in higher reliability at breakdown situations and also in longer life of weldments proper. The mentioned trimetals were prepared at Explosia Inc., Research Institute of Industrial Chemistry Pardubice-Semtín. The bond quality was assessed by optical microscopy, microhardness measurement across the bond boundary and also by X-ray microanalysis.

scholarly journals A study of the electronic structure and structural stability of Gd2Ti2O7 based glass-ceramic composites

RSC Advances ◽  
2015 ◽  
Vol 5 (99) ◽  
pp. 80939-80949 ◽  
Author(s):  
Esther Rani Aluri ◽  
Andrew P. Grosvenor
Keyword(s):  
Electronic Structure ◽  
Composite Materials ◽  
Radioactive Waste ◽  
Structural Stability ◽  
Nuclear Waste ◽  
Glass Ceramic ◽  
Ceramic Composite ◽  
Ceramic Composites ◽  
Ceramic Composite Materials ◽  
Glass Ceramic Composite

Glass-ceramic composite materials have been investigated for nuclear waste sequestration applications due to their ability to incorporate large amounts of radioactive waste elements.

Comparative Microstructures of Ion Milled and Electrochemically Thinned Composite Materials

1974 ◽  
Vol 32 ◽  
pp. 546-547
Author(s):  
R.R. Russell
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Composite Materials ◽  
Great Difficulty ◽  
Ion Milling ◽  
Transmission Electron ◽  
Ion Damage ◽  
Intermetallic Composite

Transmission electron microscopy of metallic/intermetallic composite materials is most challenging since the microscopist typically has great difficulty preparing specimens with uniform electron thin areas in adjacent phases. The application of ion milling for thinning foils from such materials has been quite effective. Although composite specimens prepared by ion milling have yielded much microstructural information, this technique has some inherent drawbacks such as the possible generation of ion damage near sample surfaces.

Transmission electron microscopy of composite materials

1988 ◽  
Vol 46 ◽  
pp. 1012-1015
Author(s):  
K.P.D. Lagerlof
Keyword(s):  
Composite Materials ◽  
Physical Properties ◽  
Structural Defects ◽  
Structural Composites ◽  
Multiphase Materials ◽  
Structural Reinforcement ◽  
Transmission Electron ◽  
Reinforced Fiber ◽  
Particulate Reinforced Composites ◽  
Definition Of

Although most materials contain more than one phase, and thus are multiphase materials, the definition of composite materials is commonly used to describe those materials containing more than one phase deliberately added to obtain certain desired physical properties. Composite materials are often classified according to their application, i.e. structural composites and electronic composites, but may also be classified according to the type of compounds making up the composite, i.e. metal/ceramic, ceramic/ceramie and metal/semiconductor composites. For structural composites it is also common to refer to the type of structural reinforcement; whisker-reinforced, fiber-reinforced, or particulate reinforced composites [1-4].For all types of composite materials, it is of fundamental importance to understand the relationship between the microstructure and the observed physical properties, and it is therefore vital to properly characterize the microstructure. The interfaces separating the different phases comprising the composite are of particular interest to understand. In structural composites the interface is often the weakest part, where fracture will nucleate, and in electronic composites structural defects at or near the interface will affect the critical electronic properties.

Time-resolved high-resolution electron microscopy of structural stability in mgo clusters

1996 ◽  
Vol 54 ◽  
pp. 672-673
Author(s):  
T. Kizuka ◽  
N. Tanaka
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Magnesium Oxide ◽  
Structural Stability ◽  
High Resolution Electron Microscopy ◽  
Video Tape ◽  
Solid State Physics ◽  
Time Resolved ◽  
Resolution Electron ◽  
Structural And Functional Properties

Structure and stability of atomic clusters have been studied by time-resolved high-resolution electron microscopy (TRHREM). Typical examples are observations of structural fluctuation in gold (Au) clusters supported on silicon oxide films, graphtized carbon films and magnesium oxide (MgO) films. All the observations have been performed on the clusters consisted of single metal element. Structural stability of ceramics clusters, such as metal-oxide, metal-nitride and metal-carbide clusters, has not been observed by TRHREM although the clusters show anomalous structural and functional properties concerning to solid state physics and materials science.In the present study, the behavior of ceramic, magnesium oxide (MgO) clusters is for the first time observed by TRHREM at 1/60 s time resolution and at atomic resolution down to 0.2 nm.MgO and gold were subsequently deposited on sodium chloride (001) substrates. The specimens, single crystalline MgO films on which Au particles were dispersed were separated in distilled water and observed by using a 200-kV high-resolution electron microscope (JEOL, JEM2010) equipped with a high sensitive TV camera and a video tape recorder system.

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