Characterization and fracture property of different strontium-containing borate-based glass coatings for Ti6Al4V substrates
| Autor: | Mark R. Towler, Yiming Li, Anthony W. Wren, Declan J. Curran, Ali Matinmanesh, Marcello Papini, Paul Zalzal, Emil H. Schemitsch |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Analytical chemistry Mineralogy Ionic bonding chemistry.chemical_element Non-bridging oxygen 02 engineering and technology 010402 general chemistry 01 natural sciences Glass structure symbols.namesake Fracture toughness Differential thermal analysis Materials Chemistry Magic angle spinning Medicine and Health Sciences Boron Borate based glass Strontium 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Ceramics and Composites symbols 0210 nano-technology Glass transition Raman spectroscopy |
| Zdroj: | Bone and Joint Institute |
| Popis: | © 2016 Elsevier B.V. This work considered the effect of increasing Strontium ion (Sr2+) content on the structure of a series of glasses based on the B2O3-P2O5-CaCO3-Na2CO3-TiO2-SrCO3 series and their resultant fracture toughness when coated onto a surgical metal substrate. Six glasses with increasing Sr2+ content (0 to 25 mol%) were synthesized and subsequently characterized by X-ray Diffraction (XRD), Differential Thermal Analysis (DTA) and both Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR) and Raman Spectroscopy. These techniques confirmed that increased Sr2+ content induced more non-bridging oxygens (NBOs) into the glass network. This would be expected to lead to de-polymerization of the glass structure, as would be evinced by lower glass transition temperatures (Tgs) as Sr2+ increased within the glass series. However, Tg was found to increase with Sr2+ addition, inferring that the strength of the ionic bond between strontium and oxygen (Sr[sbnd]O) enhanced network rigidity. The glasses were coated onto Ti6Al4V substrates using an enamelling technique, and the critical strain energy release rates (GIC) of the resultant coating/substrate constructs were measured. The incorporation of 15–25 mol% Sr2+ into the glass network was found to significantly increased the toughness of the glass/Ti6Al4V constructs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|