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Elango, M.
- Spin Coated Cadmium Doped Zinc Oxide Thin Films: Preparation, Structural, Optical and Electrical Characterization
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Authors
Affiliations
1 Department of Electronics, SNR Sons College, Coimbatore - 641044, Tamil Nadu, IN
2 Department of Electronics, Bharth University, Chennai –600073, Tamil Nadu, IN
3 Department of Physics, PSGCAS, Coimbatore - 641014, Tamil Nadu, IN
1 Department of Electronics, SNR Sons College, Coimbatore - 641044, Tamil Nadu, IN
2 Department of Electronics, Bharth University, Chennai –600073, Tamil Nadu, IN
3 Department of Physics, PSGCAS, Coimbatore - 641014, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 35 (2016), Pagination:Abstract
Pure and cadmium (Cd2+) doped zinc oxide (ZnO) were prepared by programmable microcontroller assisted spin coating unit using organometallic precursor. The pure and doped ZnO thin films were deposited on well glass substrate at 1500 rpm under alkaline condition. 400ºC sintered films were characterized for their structural, morphological, optical and electrical properties using X-ray diffraction method, scanning electron microscopy, UV-visible absorption method and DC measurements respectively. Hexagonal wurtzite phase with multiple faceted growths was witnessed for pristine film. Without alteration in the phase but dopant induced small variation in the position of prominent peaks were shown by Cd doped ZnO thinfilms. The dopant induced island growth and increasing roughness were clearly unveiled via SEM analysis. Variation in the structure and shape of the optical absorption peak reveal the varying crystallite size in accordance with dopant concentration. The electrical measurements showed that the doping process enhance the conducting property of the films. On comparison 6% Cd doped ZnO films exhibit good conductivity than other films.Keywords
Cd Doped ZnO Thin Films, Electrical Analysis, Optical Properties, Spin Coating, Structural Analysis.Full Text
- Study on Microstructure and EDAX Analysis of Al/SiC/Gr Hybrid Metal Matrix Composites
Abstract Views :250 |
PDF Views:1
Authors
M. Elango
1,
K. Annamalai
1
Affiliations
1 School of Mechanical Engineering and Building Sciences, VIT Chennai – 600 127, Tamil Nadu, IN
1 School of Mechanical Engineering and Building Sciences, VIT Chennai – 600 127, Tamil Nadu, IN
Source
Journal of Surface Science and Technology, Vol 35, No 1-2 (2019), Pagination: 60-66Abstract
The objective of this endeavor is to investigate the influence of graphite particles addition to the Al/SiC composites manufactured by stir casting method. Al/SiC/Gr hybrid metal matrix composites are preferred replacement for single reinforced composites by virtue of strengthened mechanical and tribological properties. A layered SiC/Gr composite material is required in gas turbine combustor can. Al/SiC/Gr composites are required in bearings, and pistons due to selflubrication, low wear rate and less friction. The inclusion of both strong reinforcement like SiC and smooth reinforcement like graphite enhances hardness and wear resistance of aluminium composites. The reinforcement content of graphite was varied from 2.5 to 7.5 wt % in a step of 2.5 wt. The SiC was fixed at 5 wt. % for all the three specimens, and Al6061 was used as matrix base material. The microstructure and EDAX analyses were required for three samples of hybrid metal matrix composites. Vickers hardness and porosity decreases for Al/SiC/Gr hybrid composites when percentage of graphite content increases. A review of surface modification of Al/SiC/Gr was done to find the different materials used for coating hybrid composites.Keywords
Graphite, Hybrid Metal Matrix Composites (HMMCs), Microstructure and EDAX, Al6061, SiC.
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