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Golonko P, Sadowska K, Ragiń T, Kochanowicz M, Miluski P, Dorosz J, Kuwik M, Pisarski W, Pisarska J, Leśniak M, Dorosz D, Żmojda J. Crystallization Mechanism and Optical Properties of Antimony-Germanate-Silicate Glass-Ceramic Doped with Europium Ions. MATERIALS 2022; 15:ma15113797. [PMID: 35683100 PMCID: PMC9181671 DOI: 10.3390/ma15113797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 02/05/2023]
Abstract
Glass-ceramic is semi-novel material with many applications, but it is still problematic in obtaining fibers. This paper aims to develop a new glass-ceramic material that is a compromise between crystallization, thermal stability, and optical properties required for optical fiber technology. This compromise is made possible by an alternative method with a controlled crystallization process and a suitable choice of the chemical composition of the core material. In this way, the annealing process is eliminated, and the core material adopts a glass-ceramic character with high transparency directly in the drawing process. In the experiment, low phonon antimony-germanate-silicate glass (SGS) doped with Eu3+ ions and different concentrations of P2O5 were fabricated. The glass material crystallized during the cooling process under conditions similar to the drawing processes'. Thermal stability (DSC), X-ray photo analysis (XRD), and spectroscopic were measured. Eu3+ ions were used as spectral probes to determine the effect of P2O5 on the asymmetry ratio for the selected transitions (5D0 → 7F1 and 5D0 → 7F2). From the measurements, it was observed that the material produced exhibited amorphous or glass-ceramic properties, strongly dependent on the nucleator concentration. In addition, the conducted study confirmed that europium ions co-form the EuPO4 structure during the cooling process from 730 °C to room temperature. Moreover, the asymmetry ratio was changed from over 4 to under 1. The result obtained confirms that the developed material has properties typical of transparent glass-ceramic while maintaining high thermal stability, which will enable the fabrication of fibers with the glass-ceramic core.
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Affiliation(s)
- Piotr Golonko
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
| | - Karolina Sadowska
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
| | - Tomasz Ragiń
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
| | - Marcin Kochanowicz
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
| | - Piotr Miluski
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
| | - Jan Dorosz
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
| | - Marta Kuwik
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland; (M.K.); (W.P.); (J.P.)
| | - Wojciech Pisarski
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland; (M.K.); (W.P.); (J.P.)
| | - Joanna Pisarska
- Institute of Chemistry, University of Silesia, 9 Szkolna Street, 40-007 Katowice, Poland; (M.K.); (W.P.); (J.P.)
| | - Magdalena Leśniak
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland; (M.L.); (D.D.)
| | - Dominik Dorosz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland; (M.L.); (D.D.)
| | - Jacek Żmojda
- Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland; (P.G.); (K.S.); (T.R.); (M.K.); (P.M.); (J.D.)
- Correspondence:
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Influence of the PVC of Glass Fiber Powder on the Properties of a Thermochromic Waterborne Coating for Chinese Fir Boards. COATINGS 2020. [DOI: 10.3390/coatings10060588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A thermochromic waterborne coating with thermal insulation efficacy was prepared by adding thermochromic microcapsules and glass fiber powder. The influence of the pigment volume concentration (PVC) of a glass fiber powder on the performance of the thermochromic coating for Chinese fir boards was investigated. It was found that a coating with a PVC of glass fiber powder of 0–22.0% had better discoloration properties. When the PVC of the glass fiber powder was more than 4.0%, with the increase of the PVC, the gloss of the coating decreased gradually, while, the adhesion, impact resistance, and liquid resistance were not affected. When the PVC of the glass fiber powder was 10.0%–30.0%, it showed thermal insulation efficacy and high hardness. The coating with a PVC of 16.0% glass fiber powder had better wear resistance. The discoloration property of the coating with thermal insulation efficacy was not affected by time. These results exhibit great potential for the application of a wood surface thermochromic and thermal insulation coating.
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