Investigation of kaolin–quartz mixtures during heating using thermodilatometry and DC thermoconductometry
作者: Ján OndruškaŠtefan CsákiIgor ŠtubňaViera Trnovcová
作者单位: 1Department of Physics, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, 949 74, Nitra, Slovakia
2Department of Physics of Materials, Charles University, Ke Karlovu 5, 12116, Prague, Czech Republic
3Institute of Plasma Physics, The Czech Academy of Sciences, Za Slovankou 3, 182 00, Prague, Czech Republic
刊名: Journal of Thermal Analysis and Calorimetry: An International Forum for Thermal Studies, 2020, Vol.139 (2), pp.833-838
来源数据库: Springer Nature Journal
DOI: 10.1007/s10973-019-08476-2
关键词: DC conductivityKaolinQuartzDehydroxylationDilatometry
英文摘要: Abstract(#br)Temperature dependencies of the DC conductivity of mixtures of kaolin and quartz were measured in the temperature range of 20–1200 °C. During heating, several processes take place in the sample—release of the physically bound water (PBW), dehydroxylation of kaolinite, the α → β transition of quartz, and the creation of Al–Si spinel. These processes were studied using differential thermal analysis, thermogravimetry, thermodilatometry, and DC conductivity measurement. At temperatures < 200 °C, H+ and OH ions are the dominant charge carriers in the DC conductivity due to the release and dissociation of PBW. After the release of PBW, and up to the start of dehydroxylation (~ 500 °C), the DC conductivity is dominated by the transport of Na+ and...
全文获取路径: Springer Nature  (合作)
影响因子:1.982 (2012)