Initial Research of Mineral Based Anti-Corrosion and Thermo-Resistant Multicomponent Composite Materials (Azeri)

2019 ◽  
Author(s):  
Emil Asgarov
Keyword(s):  
Composite Materials ◽  
Multicomponent Composite ◽  
Initial Research

scholarly journals Technology for Producing Composite Materials Based on Multi-component Man-generic Raw Materials

2020 ◽  
Vol 6 (12) ◽  
pp. 274-280
Author(s):  
T. Ibraimov ◽  
Y. Tashpolotov
Keyword(s):  
Composite Materials ◽  
Silicon Oxide ◽  
Raw Materials ◽  
Condensed Matter ◽  
Condensed Matter Physics ◽  
Scientific Schools ◽  
Optimal Value ◽  
Interaction Of Components ◽  
Multicomponent Composite ◽  
Intermolecular Distances

The state and prospects of development of production of composites based on various types of multicomponent raw materials (silicon oxide, slag, etc.) and their components are considered. Modern achievements in the field of condensed matter physics of composite materials with mineral matrices and various dimensional levels of fillers are considered. The approaches of leading scientific schools to the creation of composites are analyzed; it is revealed that many issues of obtaining multicomponent composite materials remain open. It is concluded that the optimization of the process of obtaining composites based on multicomponent raw materials should be carried out by changing the target functions and parameters that take into account all types of interaction of components. A method for selecting mineral matrices for the production of composite materials has been developed, the essence of which is to compare the component compositions of raw materials and composite materials, and the search for matrices is performed by the maximum optimal value of intermolecular distances in multicomponent raw materials and composite materials.

New results in the theory of elasticity for two-dimensional composites

1992 ◽  
Vol 438 (1904) ◽  
pp. 531-544 ◽  
Keyword(s):  
Composite Materials ◽  
Elastic Constants ◽  
Matrix Material ◽  
Plane Elasticity ◽  
Theory Of Elasticity ◽  
Two Dimensional ◽  
Shear Moduli ◽  
The Matrix ◽  
Multicomponent Composite ◽  
Proven Theorem

We bring together and discuss a number of exact relationships in two-dimensional (or plane) elasticity, that are useful in studying the effective elastic constants and stress fields in two-dimensional composite materials. The first of these dates back to Michell (1899) and states that the stresses, induced by applied tractions, are independent of the elastic constants in a two-dimensional material containing holes. The second involves the use of Dundurs constants which, for a composite consisting of two isotropic elastic phases, reduce the dependence of stresses on the elastic constants from three independent dimensionless parameters to two. It is shown that these two results are closely related to a recently proven theorem by Cherkaev, Lurie and Milton, which we use to show that the effective Young’s modulus of a sheet containing holes is independent of the Poisson’s ratio of the matrix material. We also show that the elastic moduli of a composite can be found exactly if the shear moduli of the components are all equal; a previously known result. We illustrate these results with computer simulations, where appropriate. Finally we conjecture on generalizations to multicomponent composite materials and to situations where the bonding between the phases is not perfect.

scholarly journals Three-Dimensional Printing of Natural Materials Involving Loess-Based Composite Materials Designed for Ecofriendly Applications

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 293
Author(s):  
Hyunbae Lee ◽  
Jae-Hwan Kim ◽  
Seung-Muk Bae ◽  
Jiwon Oh ◽  
Heesu Hwang ◽  
...  
Keyword(s):  
Composite Materials ◽  
3D Printing ◽  
Mechanical Strength ◽  
Three Dimensional ◽  
Phase Identification ◽  
X Ray Diffraction ◽  
Three Dimensional Printing ◽  
Quick Lime ◽  
Gypsum Content ◽  
Multicomponent Composite

In this work, loess-based materials were designed based on a multicomponent composite materials system for ecofriendly natural three-dimensional (3D) printing involving quick lime, gypsum, and water. The 3D printing process was monitored as a function of gypsum content; in terms of mechanical strength and electrical resistance, in the cube-shaped bulk form. After initial optimization, the 3D printing composition was refined to provide improved printability in a 3D printing system. The optimal 3D fabrication allowed for reproducible printing of rectangular columns and cubes. The development of 3D printing materials was scrutinized using a multitude of physicochemical probing tools, including X-ray diffraction for phase identification, impedance spectroscopy to monitor setting behaviors, and mercury intrusion porosimetry to extract the pore structure of loess-based composite materials. Additionally, the setting behavior in the loess-based composite materials was analyzed by investigating the formation of gypsum hydrates induced by chemical reaction between quick lime and water. This setting reaction provides reasonable mechanical strength that is sufficient to print loess-based pastes via 3D printing. Such mechanical strength allows utilization of robotic 3D printing applications that can be used to fabricate ecofriendly structures.

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.

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