Actas de congresos
Strategic High Quality Quartz Supply For Fusion Into Silica Glass
Ceramic Transactions. , v. 231, n. , p. 69 - 74, 2012.
An extensive in loco survey of main quartz producing regions in Brazil integrated with physicochemical characterization studies of quartz lascas and their fusion into silica glass bring the possibility of obtaining high quality quartz powder supplies for various industrial applications. The advantage is the relatively simple, cheap and environmentally friendly processing due to the high quality huge reserve of quartz ores of hydrothermal geological origin. The possibility of using highly transparent first grade quartz lascas in conventional fusion processes allows the fabrication of nearly bubble free silica glass. Due to the increasing demand of silica glass for processing solar cells and other products, this material is certainly a strategic supply for the present and future scenarios.2316974Corning,Ivoclar Vivadent,Nippon Electric Glass Co., Ltd.,Owens Corning,PPGDoering, R., Nishi, Y., (2007) Handbook of Semiconductor Manufacturing Technology, , CRC Press. ISBN 1574446754Suzuki, C.K., Iwasaki, F., Iwasaki, H., Al impurity purification in quartz grown by the hydrothermal method (1989) Jpn. J. Appl. Phys., 28 (1), pp. 68-72Hummel, D.C.A., Iwasaki, H., Iwasaki, F., Suzuki, C.K., Characterization of natural quartz lascas for high technology industries, part II: Study of density and optical micrography measurements (1986) Ceramica, 32, pp. 281-284Diniz Filho, L.C., (2008) Quartzo Cristal, Sumario Mineral, , DNPM/RN-National Department of Mineral Production(2011) Iota High Purity Quartz, , http://www.iotaquartz.com/world.htmlGerman Advisory Council on Global Change, Fraunhofer Institut Solare Energiesysteme, (2003)Göetze, J., Chemistry, texture and physical properties of quartz - Geological interpretation and technical application (2009) Mineralogical Magazine, 74 (3), pp. 645-671Iwasaki, F., Iwasaki, H., Impurity species in synthetic and Brazilian natural quartz (1993) Jpn. J. Appl. Phys., 32, pp. 893-901De Paula, F.D., Kakitani, R., Dos Santos, M.F.M., Fujiwara, E., Ono, E., Suzuki, C.K., Improvement of the lascas selection methodology applied to the manufacturing of solar photo-voltaic cells IX Brazil-Japan International Workshop: Society, Energy and Environment, (2011)Nascimento, M.L.F., Zanotto, E.D., Diffusion process in vitreous silica revisited (2007) Phys. Chem. Glasses: Eur. J. Glass Sci. Technol. B, 48 (4), pp. 201-217Lipson, H.G., Kahn, A., Infrared characterization of aluminum and hydrogen defect centers in irradiated quartz (1985) J. Appl. Phys., 58, pp. 963-966De Souza, L.B.F., Guzzo, P.L., Khoury, H.J., Correlating the TL response of γ-irradiated natural quartz to aluminum and hydroxyl point defects (2010) J. Lumin., 130, pp. 1551-1556Iwasaki, H., Iwasaki, F., Oliveira, V.A.R., Hummel, D.C.A., Pasquali, M.A., Guzzo, P.L., Watanabe, N., Suzuki, C.K., Impurity content characterization of Brazilian quartz lascas (1991) Jpn. J. Appl. Phys. - Part 1, 30 (7), pp. 1489-1495Oliveira, V.A.R., Iwasaki, H., Suzuki, C.K., Study of impurities in Brazilian quartz lascas from various regions (1986) Ceramica, 32 (202), pp. 181-183