Solid-State NMR Structural Characterization of Phase-Separated Borosilicate Glasses: Relation to Fracture Toughness.

• Grant number: 23/16387-3
• Support Opportunities: Scholarships in Brazil - Master
• Start date: February 01, 2024
• Status: Discontinued
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Hellmut Eckert
• Grantee: Yara Hellen Firmo Gomes
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass, AP.CEPID
• Associated scholarship(s): 25/03777-3 - Compositional Design of High-Strength Crack-Resistant Calcium Boroaluminosilicate Glasses, BE.EP.MS

Abstract

Standard and advanced solid-state Nuclear Magnetic Resonance (NMR) methods will be used forelucidating the short- and medium-range order of sodium borosilicate glasses at the atomic level. A special focus of the study will lie on the structural characterization of phase separation processes that have been identified in this system and observed to influence the fracture toughness. The new scientific insights of the research project will result in guidelines on how to further optimize composition and processing treatments of glasses with higher crack initiation resistance.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LOGRADO, MILLENA; GOMES, YARA HELLEN FIRMO; INOUE, TOMIKI; NAKANE, SHINGO; KATO, YOSHINARI; YAMAZAKI, HIROKI; YAMADA, AKIHIRO; ECKERT, HELLMUT. Densification of sodium and magnesium aluminosilicate glasses at ambient temperature: structural investigations by solid-state nuclear magnetic resonance and molecular dynamics simulations. Physical Chemistry Chemical Physics, v. 26, n. 43, p. 15-pg., 2024-10-17. (23/16387-3, 13/07793-6)