Thermomechanical Properties and Structure of Fluorophosphate Glasses Activated with Nd3+ at Different Concentrations of Ba(PO3)2

• Published in: Glass physics and chemistry Vol. 47; no. 4; pp. 334 - 339
• Main Authors: Bogdanov, O. A., Kolobkova, E. V., Perevislov, S. N.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2021; Springer Nature B.V
• Subjects: Aluminum fluorides; Barium fluorides; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Crystallization; Fracture toughness; Glass; Glass transition temperature; Magnesium fluorides; Materials Science; Microhardness; Natural Materials; Physical Chemistry; Strontium fluorides; Thermal expansion; Thermomechanical properties; microhardness; fracture toughness; crystallization stability; fluorophosphate glass; TCLE
• ISSN: 1087-6596; 1608-313X
• DOI: 10.1134/S1087659621040052

The system x Ba(PO 3 ) 2 ·(99 – x )(AlF 3 –BaF 2 –CaF 2 –MgF 2 –SrF 2 )–1NdF 3 , where x = 2, 5, 10, 15, 20, 30, and 40 mol %, is considered. The dependences of the thermal coefficient of linear expansion, T g , T x . T x –T g , HV, and K 1C on the concentration of Ba(PO 3 ) 2 are determined. It is found that an increase in the concentration of Ba(PO 3 ) 2 with the uniform replacement of the fluoride component leads to a decrease in the thermal coefficient of linear expansion, an increase in the glass transition temperature and crystallization, and a broadening of the interval T x –T g . It is shown that an increase in Ba(PO 3 ) 2 in the glass leads to an increase in microhardness HV and fracture toughness K 1C of the glasses. The main thermomechanical characteristics of the studied glasses are compared with those of their commercial analogs.