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Articles by S. Dhanapandian
Total Records ( 2 ) for S. Dhanapandian
  S. Dhanapandian and B. Gnanavel
  The main aim of this research is to study the utilization potential of granite and marble sawing powder wastes as alternative raw materials in the production of bricks. To safeguard the environment, efforts are being made for recycling different wastes and utilize them in valuable applications. Granite and marble sawing powder wastes is widespread by-product of industrial processes in India. Generally these wastes pollute and damage the environment due to sawing and polishing processes. Granite and marble wastes were collected from companies located in Salem District, Tamilnadu, India. Local clay and fired industrial brick samples were collected from nearby district namely, Erode, Tamilnadu, India. Mixtures were prepared with amounts of 0, 10, 20, 30, 40 and 50 wt. % of wastes incorporated into the raw clay and then fired at temperatures from 500 to 900 °C in steps of 100 °C in an electric furnace. Their characterizations were carried out with the determination of particle size, chemical composition, plasticity, XRD, SEM and Mossbauer spectroscopy. The technological properties such as compressive and flexural strengths, water absorption, porosity and bulk density were determined. The results showed that the granite and marble wastes can be added to the clay material with no determinal effect on the properties of the sintered bricks anticipating no costly modifications in the industrial production line.
  R. Sridhar , G. Kiruthigaa , C. Manoharan , S. Dhanapandian , K.R. Murali and K.S. Kumar
  Transparent conducting ZnO thin films were deposited on glass substrate by Spray Pyrolysis Technique (SPT) using precursor Zinc acetylacetonate at different substrate temperature in the range of 325-400°C. The structural properties, optical properties and surface morphology of the deposited films were studied using X-ray diffraction (XRD), UV-Visible spectroscopy, Photoluminescence and Scanning Electron Microscopy (SEM) attached with Energy Dispersive Detector (EDS). The X-ray diffraction analysis revealed that the films had preferred orientation along (100) direction with a hexagonal wurtzite type crystal structure. The optical properties were investigated by measuring the transmittance curves which were used to find the optical band gap energy, refractive index and extinction coefficient. The photoluminescence spectrum (PL) was studied at room temperature with a wavelength of 275 nm as the excitation source. The surface morphology was observed using scanning electron microscope.
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