Effects of sintering temperature and holding time on porosity and shrinkage of glass tubes |
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| Affiliation: | 1. Department of Physics, N.P.R. College of Engineering and Technology, Natham, 624401 Dindigul, Tamilnadu, India;2. PG & Research Department of Physics, Government Arts College, Melur, 625016 Madurai, Tamilnadu, India;1. Department of Earth Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy;2. Department of Oriental Studies, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy;1. Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, 249199, India;2. Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India;3. Department of Physics, Bhagini Nivedita College, University of Delhi, 110023, India;1. School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China;2. Laboratory of Crystal Physics, Institute of Physics, SB RAS, Krasnoyarsk 660036, Russia;3. Department of Physics, Far Eastern State Transport University, Khabarovsk 680021, Russia |
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| Abstract: | The influences of sintering temperature and holding time on porosity and shrinkage of glass tubes have been studied by optical microscope. It is evident that there exists three stages for the sintering process of glass. At the first stage, both increasing temperature and prolonging the holding time contribute to lowering the porosity and to intensifying the shrinkage greatly. At the second stage, the glass further densifies and the voids among particles become smaller and less. Finally, at the third stage the shrinkage rate almost keeps unchanged to sintering temperature and holding time. |
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| Keywords: | A. Sintering B. Porosity D. Glass Shrinkage |
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