20^th International Conference on Emerging Materials and Nanotechnology November 14-15, 2022 Vancouver, Canada

Biography:

Dr. Chahrazed Benhaoua  has completed his PhD in Organic Chemistry by university of

 Ahamed Benbella, Algéria (2013) . Chahrazed holds an accreditation to supervise research (HDR) in the field of organic: materials having conductive properties semi conductors  from Mascara University (2020) .

She is Professor at at University of Tiaret, Algéria. Faculty of Sciences matter and physic Department, where she is in charge of the course “structure of matter and chemical thermodynamqiue”. She has published more than 10 papers in reputed journals.

 

Abstract:

Recently, the interest of enaminones in chemistry has grown steadily and has been the subject of numerous publications.

[1, 2, 3]. Enamine is any molecule with a carbonyl group adjacent to

the double bond of an enamine. Their particular electronic

richness, with the delocalization of π electrons on five atoms, induces the existence balances between different tautomeric forms and different conformers. We report here on the synthesis of derivatives of enaminones of potential interest as compounds with interesting physical properties. [4].

The treatment of cyclohexane-1,3-dione (dimedone)  with N,N-dimethylformamide dimethyl acetal (DMFDMA) gave 2-((dimethylamino)methylene)-5,5-Dimethylcyclohexane-1,3-dione (enaminone a). This article explains the differents enaminones (c) wich are obtained by condensation of an appropriate amine (b) with eanminone (a) using solvent-free technique. [5]

Biography:

Mr. Naga Venkata Krishna Vajjhala was CSIR (council of scientific and industrial research) fellow in India and has worked for Ph.D during the age of 28-33 years during 1998-2003 at Indian institute of chemical technology (IICT) in Hyderabad, India.  Ph.D was not awarded. My M.Sc, M.Phil was awarded in University of Hyderabad, India.  I have no publications to my credit. I am pursuing Chemistry and science with personal interest and passion in the subject.  I don’t represent any organization.

 

Abstract:

 Perovskites are yellow, brown r black minerals consisting of largely of Calcium Titanate. A Perovskite is any material with. a crystal structure following the formula ABX3, which was first discovered as the mineral called Perovskite, which consists of Calcium titanate oxide, in ABX3, A is a metal with ox-state 2+ , B is a metal With ox-State 4+, & X is a non metal Usually oxygen With ox.state 2 -

Many oxides with the Perovskite str. have physical and chemical Properties that make them useful in electronic devices. Their characteristics include electronic Conductivity, oxide ion mobility through  Crystal Lattices, Thermal and Chemical Stability. Photo Catalysts, thermo electric &  dielectric Properties.

Drawbacks & Plus Points:

1. The Perovskite material will break down quickly  due to exposure of heat, moisture, Snow Etc.
2. Perovskite has simple Cubic symmetry and is related, to FCC Lattice
3. The structure absorbs Sun Light in a different,  more effective Way than Silica cells.
4. Perovskite, a mixed halide CH 3 NH 3 Pb Ix Ch3-x in n-type Semiconductor
5. In Perovskite Hybrid organic-inorganic Perovskites (HolP3) are  crystals with the structural formulae ABX3, where A, B & X are organic & in organic lons respectively……….

 

Biography:

DR. TUSHAR SONAR is working as a Senior Research Scientist in Department of Welding Engineering, Institute of Engineering and Technology, South Ural State University, Chelyabinsk, Russia. He is serving as Academic Editor for the journal “Advances in Materials Science and Engineering (Hindawi Publication-SCIE Indexed; Impact factor: 2.098)” and Associate Editor for “World Journal of Engineering (Emerald Publication-ESCI indexed)”. He completed Ph.D. in Manufacturing Engineering (Welding) from Annamalai University, Annamalai Nagar, Tamil Nadu State in the year 2021. He is a recipient of ISRO RESPOND research fellowship and worked in collaboration with Vikram Sarabhai Space Centre (VSSC), ISRO, Thiruvananthapuram, Kerala State for his Ph.D. research work. He completed his M.Tech. (Mechanical Engineering) from Dr. Babasaheb Ambedkar Marathwada University, Aurangabad in the year 2016 and B.E (Mechanical Engineering) from Pune University in the year 2013. He has published 40 research papers in reputed national and international journals and presented 15 research papers in international conferences. He has total of 6 years of work experience including teaching and research. His research interests include Welding and joining, Additive Manufacturing and Heat Treatment of metals

Abstract:

Statement of the Problem: Inconel 718 is a nickel-ferrous-chromium based superalloy extensively used in the industrial sector at elevated temperature up to 650oC owing to its better mechanical properties and weldability. However, it is amenable to some metallurgical problems during welding such as constitutional segregation and consequential laves phase formation in fusion zone (FZ) which severely deteriorates the service performance of Inconel 718 joints. This alloy also reveals extreme tendency to microfissuring in heat affected zone (HAZ) owing to the eutectic phases and carbides developed at the grain boundaries. It causes the premature failure of welded aero-engine components. Gas Tungsten Arc Welding (GTAW) process is comprehensively employed for welding of Inconel 718 to produce high-quality joints. However, the high heat input and lower joint penetration associated with wider bell-shaped arc column principally constrains its applications and employability in making the highly efficient joint. The laves phase formation and HAZ microfissuring can be mitigated by lowering the heat input and increasing the rate of cooling. The electron beam (EBW) and laser beam (LBW) welding have shown significant influence on minimizing the laves phase formation but they are susceptible to porosity related defects and liquation cracking owing to the rapid rate of cooling. This paper provides an overview of the weldability studies on Inconel 718 alloy. The physical metallurgy of Inconel 718 alloy is explained briefly. The effect of welding processes (GTAW, EBW and LBW) on microstructural characteristics, tensile properties, hardness, hot tensile, stress rupture and hot corrosion of Inconel 718 joints is reported and discussed. Keywords: Inconel 718, Segregation, Laves phase, Microstructural Characteristics, Mechanical Properties, Post weld heat treatment.

Biography:

Abstract:

Clay is an economically valuable earth material which is found in a large number of certain locations around the world. In the utilizations of this earth resource, it is used in the preliminary purposes such as the pottery industry and roof tile manufacturing even though it would be much applicable material/agent for the sake advanced uses because of the variations in the physic-chemical characteristics of most of different clay verities foremost of the adsorption. The investigations of the leaching of some metallic elements to water were the aims and objectives of the existing research component prior to the choosing for the water treatment systems. In the existing research there were experimented three different types of clay types available in Sri Lanka. A few of clay samples from each of clay was dissolved in distilled water and prepared a batch of solutions after filtering each of them. The prepared solutions were analyzed using Atomic Absorption Spectroscope (AAS). As the general outcomes of the relevant analysis, there were obtained 1.8640ppm, 3.1952ppm and 1.1408ppm of Mg in anthill clay, brick clay and roof tile clay. Also there were not obtained neither Zinc nor Cesium in anthill clay, brick clay and roof tile clay. When comparing of the obtained results with the Sri Lankan drinking water quality norms there were found some non-hazardous conditions as the maximum permissible limits of Magnesium (Mg) and Zinc (Zn) for drinking water are 150ppm and 15ppm. The long term effects on the human health as results of the long term contaminated/ non-recommended water consumption and accumulation of such elements.

Keywords: Anthill clay, Brick clay, Roof tile clay, Leaching, Magnesium, Zinc, Cesium

 

 

Biography:

Dr Hassan Mehmood Khan has completed his PhD at the age of 30 and is working as assistant professor at the Institute of Physics The Islamia University of Bahawalpur Pakistan The fields of interest include Condensed matter Physics. Magnetic Materials, Nanomaterials. (synthesis, characterization and their application studies), nanocrystalline soft ferrites, nanostructured hard ferrites. Microwave and other high frequency applications of Ferrites.

 

Abstract:

Effect of rare earth and Divalent (InMn) substitution on the structural electrical and dielectric properties of W-type hexaferrites prepared by sol–gel auto combustion is reported. The synthesized samples were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy electrical and dielectric properties (resistivity and conductivity). The X-ray diffraction analysis confirmed single phase M-type hexa-ferrite structure. The lattice parameters were found to increase as In Mn contents increases, which is attributed to the ionic sizes of the implicated cations. The InMn seems to be completely soluble in the lattice. The results of scanning electron microscopy shows that the grain size decreases with increase of In Mn substitution. The increased anisotropy and fine particle size are useful for many applications, such as improving signal noise ratio of recording devices.