Influence of heating temperature on structural properties of sol-gel materials

• Autorzy: Bauer J. , Ulatowska-Jarża A. , Podbielska H. , Lechna-Marczyńska M. , Bindig U. , Muller G. , Beuthan J.
• Konferencja: 7th Seminar Porous Glasses - Special Glasses PGL, 2005, Szklarska Poręba, Poland, September 10-14, 2005 r.
• Języki publikacji: EN

Abstrakty

EN

In this paper, the influence of heating temperature on the properties of sol-gel materials was investigated . The aim of the study was to examine the production repeatability. All samples were made with factor R = 15, denoting the ratio of the number of precursor (TEOS) moles to solvent (water) moles. The samples were prepared in acid hydrolysis route on water, whereas two groups were considered: in one group the hydrolysis was terminated by addition of NH3źH2O and in the other there was no addition of base. The samples were stored for 1 month at room temperature and then exposed to high temperatures: 1000, 1200 and 1350°C. They were examined by means of scanning electron microscopy (SEM). The electron microphotographs were recorded, digitized and analyzed. The Fisher linear discriminant analysis for evaluation of the microscopic images was exploited. It was shown that the repeatability varied between 83.24% and 95.48%. The analysis demonstrated that the best results were achieved for neutralized samples made at 1000°C.

Słowa kluczowe

EN

sol-gel; scanning electron microscopy (SEM); repeatability; Fisher linear discriminant analysis

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2005
• Tom: Vol. 35, nr 4
• Strony: 791--797
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Bauer J.

• Bio-Optics Group, Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

autor

Ulatowska-Jarża A.

• Bio-Optics Group, Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

autor

Podbielska H.

• Bio-Optics Group, Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

autor

Lechna-Marczyńska M.

• Bio-Optics Group, Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

autor

Bindig U.

• Laser-und Medizin-Technologie GmbH, Fabeckstr. 60-62, D-14195 Berlin, Germany

autor

Muller G.

• Charite - Universitätsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Fabeckstr. 60-62, D-14195 Berlin, Germany

autor

Beuthan J.

• Charite - Universitätsmedizin Berlin, Campus Benjamin Franklin, Institut für Medizinische Physik und Lasermedizin, Fabeckstr. 60-62, D-14195 Berlin, Germany

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