scholarly journals Composition Materials With Metal Matrix Condensed from the Vapor Phase

2021 ◽  
Vol 8 ◽  
pp. 24-29
Author(s):  
N.I. Grechanyuk ◽  
V.G. Grechanyuk ◽  
A.F. Manulyk
Keyword(s):  
Porous Materials ◽  
Vapor Phase ◽  
Metal Matrix ◽  
Open Porosity ◽  
Deposition Temperature ◽  
Second Phase ◽  
Pore Sizes ◽  
Phase Concentration ◽  
Composition Materials ◽  
Condensed Materials

In this article, the present-day problems of microporous condensed materials obtained from the vapor phase are discussed. The pore sizes are regulated by the amount of the second phase concentration and the deposition temperature. The oxides, fluorides, and sulfides can be used as the second phase and non-removable inclusions. The open porosity can be regulated from 0% to 50 %of the porosity and with average porose sizes of 0.1 to 8 µm. The condensed micro-porous materials can be deposited in coating form or the form of massive bulk sheet materials with a thickness of up to 6 mm and a diameter of 1m.

scholarly journals Composition Materials with Metal Matrix Condensed from the Vapor Phase

2021 ◽  
Vol 8 ◽  
pp. 19-23
Author(s):  
N.I. Grechanyuk ◽  
V.G. Grechanyuk ◽  
A.F. Manulyk
Keyword(s):  
Mechanical Properties ◽  
Vapor Phase ◽  
Metal Matrix ◽  
Materials Design ◽  
Matrix Type ◽  
Dispersed Particles ◽  
Composition Materials ◽  
Reinforced Materials

The data of condensed from vapor phase disperse reinforced materials design is presented. It is shown that the material's mechanical properties depend on matrix type, types of dispersed particles, temperature and roughness of the substrate, purity of initial materials, and its evaporation speed.

Research of Thermodynamics and Properties of Pb/WC-Zro2 Inert Electrodes Used in Zinc Electrodeposition

2010 ◽  
Vol 136 ◽  
pp. 43-47
Author(s):  
Rui Dong Xu ◽  
Jun Li Wang ◽  
Jian Feng Zhou
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Metal Matrix ◽  
Stable Region ◽  
Alloy Electrode ◽  
Second Phase ◽  
Acid Solutions ◽  
Zro2 Particle ◽  
Zinc Electrodeposition ◽  
Inert Electrode

This research is to fabricate a Pb/WC-ZrO2 inert electrode used in zinc electrodeposition. First, the potential-pH diagram of Pb-H2O system was constructed and the thermodynamic stable region was calibrated in the diagram. On the basis, the co-deposition of Pb, WC and ZrO2 particles from fluorboric acid solutions was realized on the surface of Pb-4wt%Sb substrate. The results show that deposition amounts of ZrO2 and WC particles in the inert electrodes increase with increasing ZrO2 concentrations in the bath, WC particle is easier to deposit into the inert electrodes than ZrO2 particle. The distribution of WC and ZrO2 particles as the second phase within metal matrix Pb is very uniform. Compared with Pb-1wt%Ag alloy electrode, Pb/9.91wt%WC-3.62wt%ZrO2 inert electrode possesses better catalytic activity of oxygen evolution.

scholarly journals Vapor phase dealloying: A versatile approach for fabricating 3D porous materials

2019 ◽  
Vol 163 ◽  
pp. 161-172 ◽  
Author(s):  
Jiuhui Han ◽  
Cheng Li ◽  
Zhen Lu ◽  
Hao Wang ◽  
Zhili Wang ◽  
...  
Keyword(s):  
Porous Materials ◽  
Vapor Phase

Investigation of second phase concentration effects on tribological and electrical properties of Cu-WS2 composites

2021 ◽  
pp. 107357
Author(s):  
Marco Freschi ◽  
Matteo Di Virgilio ◽  
Oskari Haiko ◽  
Marco Mariani ◽  
Luca Andena ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Second Phase ◽  
Concentration Effects ◽  
Phase Concentration

Ultra-Fine Grained Al-SiC Metal Matrix Composite by Rotary Swaging Process

2011 ◽  
Vol 702-703 ◽  
pp. 320-323 ◽  
Author(s):  
Sivaswamy Giribaskar ◽  
Gouthama ◽  
Rajesh Prasad
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Room Temperature ◽  
Volume Fraction ◽  
Second Phase ◽  
Fine Grained ◽  
Rotary Swaging ◽  
Sic Particles ◽  
Dynamic Recrystallisation

In present study microstructural evolution during swaging on aluminium alloy based metal matrix composite (MMC) reinforced with 15% volume fraction silicon carbide (SiC) particles is presented. Samples were swaged at room temperature in steps with reducing die dimensions using rotary swaging technique. SEM and TEM are used to study the microstructural characteristics of swaged samples. SEM observations were made to understand the flow and deformation characteristics of deforming aluminium matrix in the presence of second phase and reinforced SiC particles during swaging. TEM observations on swaged samples confirmed the formation of ultra-fine grains in Al-15%SiC MMC. It is shown that the dynamic recrystallisation occurring in the proximities of second phase particles during the deformation at room temperature, leads to very fine grained microstructure.

Design of Reservoir Recognition Technique Component - Open Porosity in Non-Polarizing Electrodes

2017 ◽  
Vol 890 ◽  
pp. 308-311
Author(s):  
Jakub Skibinski ◽  
Tomasz Wejrzanowski ◽  
Krzysztof Jan Kurzydlowski
Keyword(s):  
Porous Materials ◽  
Pore Size ◽  
Open Porosity ◽  
Complex Geometry ◽  
Size Variation ◽  
Design Procedure ◽  
Ceramic Materials ◽  
Geometrical Features ◽  
Materials Used ◽  
Volume Method

In the present study modeling of permeability of open-porosity ceramic materials used in non-polarizing electrodes is addressed. The structure of the material filling the electrode determines the infiltration of the ceramic structure by electrolyte, which influences the efficiency of the electrodes. The composition of electrode material was characterized with Scanning Electron Microscope Hitachi S3500N with EDS detector and the structure was determined with use of XRadia XCT400 tomograph . The complex geometry of porous materials has been designed using procedure based on Laguerre-Voronoi tessellations (LVT). A set of porous structures with different geometrical features has been developed using LVT algorithm. The approach used here allows to investigate the influence of geometrical features such pore size variation on the permeability of studied materials. Pressure drop characteristics of the developed structures has been analyzed using finite volume method (FVM). The results show that permeability of porous materials is strongly related with distribution of pore size. The study exhibits the utility of developed design procedure for optimization of non-polarizing electrodes performance.

Sign in / Sign up

Export Citation Format

Share Document