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"A Novel Approach for Fabrication Technology of Mullite Nanoparticles from Industrial Wastes for Advanced Applications" |
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US-Egypt Joint Research Grants For Collaborative Research between Central Metallurgical R&D Institute CMRDI, and University of Florida, , USA was recently approved. Associated professor Mohamed M. Rashad, Head of Electronic and Magnetic Materials Division is the principal investigator from Egypt whereas Prof. K. Powers , Materials Science and Engineering Department is the principal investigator from USA. The project started in September 2011 for two years. The overall objective of this project is to process of silica effluents disposed from alum manufacturing in Egypt, silica fume from Ferro-silicon Alloys Company, Al dross from Egyptian Aluminum Company and aluminum effluents disposed from Egyptalum Company for production of mullite nanoparticles 3Al2O3.2SiO2 for different electronic and optical applications. The suggested technology for the conversion of wastes to the mullite nanopowders for different industrial applications is a novel and very interested. The technology depends on the formation of soluble solutions of sodium aluminate NaAlO2 and sodium silicate Na2SiO3 which is chemically treated at certain conditions using co-precipitation and hydrothermal routes. In comparison, the mullite synthesis by both two routes using pure chemicals is also investigated. The effect of synthesis conditions; temperature, time, pH, molar ratio and the crystal modifiers on the crystal structure, crystallite size and microstructure are studied and the optimum conditions are determined. Moreover, the changes in the surface area SBET, DC resistivity, optical and mechanical properties are measured. Thus, this project has the potential to transform a cheap undesirable by-products produced in Egypt into a highly value added product for the global refractory manufacturing industry, sharing in solving water purification problems through expected increase in alum production, encouraging establishment of new plants as kaolin is available in different localities in Egypt in huge reserves and solving the environmental problems arising from the disposal of acidic silica effluents and alkali disposal of aluminum etching effluents. This project also brings together the international expertise of Particles in USA with the particle technology experts in Egypt (CMRDI).
Mullite produced at 1000oC without and with surface active agent
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A study of Ti-6Al-4V alloy modified by Si-addition |
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Mr. Mohamed Abdel Kawy, research assistant in Casting Technology lab (CMRDI), has been awarded Master degree in Engineering from Faculty of Engineering-Cairo University for thesis entitled “A study of Ti-6 Al-4 V alloy modified by Si-addition”. This thesis was supervised by Assoc. Prof. Khaled M. Ibrahim from CMRDI and Prof. Abdel-Hamed Hussin from Faculty of Engineering-Cairo University. It aims casting Ti-6Al-4V alloy at CMRDI using vacuum induction furnace by adding 0.5% Si, hot swaging at 900 °C followed by solution treatment at 1050 °C and then aging at 500 °C for 24 hrs., and also aims at studying the effect of adding 0.5% Si as a grain refiner and applying different solution treatment processes on microstructure, mechanical properties and corrosion behavior of Ti-6Al-4V alloy. An addition of 0.5%Si to Ti-64 alloy decreases the grain size in the as-cast structure from 630 to 310 µm and reached to 80 µm after applying hot swaging at 900 °C. Finally optimum mechanical properties and corrosion resistance of this alloy was obtained. It could be used in medical implant and aerospace applications.
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Training program in Hardening-Tempering of Spare Parts For United Industries Company (ELSEWEDY CABLES) |
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Spare parts are considered as an important element in the production process. Effective and precise spare parts is leading to increase production quality and consequently, strong competition in the local and global market.
In cables industries the spare parts that used in fused polymers (PVC) extrusion are subjected to both mechanical erosion due to pressurizing the fused polymers and thermal fatigue due to long time passing of high temperature fused PVC. This issue has a negative effect on the quality of cables insulation.
Consequently, Professor Taher El-Bitar, head of metals technology department, proposed a training program for a selective group of engineers, who are responsible for processing of PVC spare parts. The training program is in the field of Hardening-tempering as a first phase, followed by constructing a heat treatment unite to serve not only the PVC spare parts but also for heat treatment process for the whole ELSWEDEY CABLES group.
The training program was dealing with the theoretical bases of heat treatment process as well as practical training to achieve hardening and tempering processes for different carbon content steel samples. Hardness, metallographic preparations and microstructural investigation are as included in the training program.
The program took place at the company and on CMRDI heat treatment unit and plastic deformation laboratory. Training started on 31st July and ended on 25th August 2011.
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Visible Light-Activated Mixed Anatase / Brookite Heterojunction Titania Photocatalysts For Treatment of Polluted Water |
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US-Egypt Joint Research Grants For Collaborative Research between Central Metallurgical R&D Institute CMRDI, and University of Cincinnati, Cincinnati, US was recently approved. Associated professor Adel A. Ismail, Head of Nanostructured Materials and Nanotechnology Division is the principal investigator from Egypt whereas Prof. Dionysiou, Environmental Engineering and Science Program is the principal investigator from US. The project started in September 2011 for two years. It focuses on preparation of non-metal-doped Anatase/Brookite Heterojunction TiO2 photocatalysts for the destruction of cyanotoxins which can poison and even kill animals and humans and also accumulate in other animals such as fish and shellfish, and cause poisonings such as shellfish poisoning. It aims also to removal of residual pharmaceuticals from aqueous systems under ultraviolet and visible light-activated TiO2. The outcome of this project are (i) novel approaches to synthesize and evaluate TiO2 for the degradation of cyanotoxins and residual pharmaceuticals from aqueous systems using visible and solar light, (ii) innovative studies to understand the basic mechanisms involving the generation and reactions of various radicals in TiO2 photocatalysis and specific probing investigations to identify the radicals formed, (iii) a meaningful research plan to obtain new information on the role of non-metal dopants on the fundamental photo-electrochemistry of TiO2, and (iv) detailed mechanistic studies to determine reaction intermediates and unveil reaction pathways in TiO2 photocatalysis during the degradation of cyanotoxins in water.
Figure 1 Mechanism of TiO2 Photocatalysis
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Steel and Ferroalloys Dpt. finalizes three projects |
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Steel and Ferroalloys Department finalized three projects funded by Research Development and Innovation Programme (RDI), Eu-Egypt Innovation Fund-Grant Scheme 2.
The three projects are:
- Development of environmentally friend free lead free-cutting steel
- Innovative Low-Nickel Cobalt Free Stainless Steel Instead of the Costly Conventional High-Nickel High-Cobalt Maraging Steel
- Commercialization of Ferromanganese Nitrogen Alloy
For more information |
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