Effect of [SiO2]/[Li2O] on the microstructure and properties of lithium disilicate glass-ceramics containing lithium tantalate as a secondary phase
Source abstract
Abstract
Our previous work proposed a phase reaction equation for the current lithium disilicate (LD) glass-ceramic system containing lithium tantalate (LT) as a secondary phase: 2(Li 2SiO 3) + Ta 2O 5 → Li 2Si 2O 5 + 2(LiTaO 3). The present study had a goal of finding support for the proposed equation by examining the effect of the ratio of [SiO 2] to [Li 2O] on the phase assemblage and microstructure of this system. The study also examined the microstructural effects on several properties of this system. A 15-sample data set was created by designing three microstructures for each of the five compositions. It was found that the LT/LD ratio from X-ray diffraction peak counts, as well as from Rietveld refinement, increased in the material as [SiO 2]/[Li 2O] decreased, supporting the proposed reaction equation. As [SiO 2]/[Li 2O] decreased, bulk density and CTE increased, while L* (lightness vs darkness) and Knoop hardness values decreased. The microstructure had little effect on radiopacity, but the addition of extra Ta 2O 5 into the composition lead to increased radiopacity values.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Nuclear materials and radiation effects · Recycling and utilization of industrial and municipal waste in materials production
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. (Don) Stookey (1915–2014): Pioneering Researcher and Adventurer10.3389/fmats.2016.00037 ↗
2. Höland · 2019
3. A Bright Future for Glass-Ceramics
4. Varshneya · 2019
5. Strength-limiting damage in lithium silicate glass-ceramics associated with CAD–CAM10.1016/j.dental.2018.11.004 ↗
6. Influence of microstructure on indentation and machining of dental glass-ceramics10.1557/JMR.1996.0296 ↗
7. Abrasive machining of glass-ceramics with a dental handpiece10.1080/10940340008945707 ↗
8. Properties and clinical application of three types of dental glass-ceramics and ceramics for CAD-CAM technologies10.3390/ma3063700 ↗
9. Glass–ceramics in dentistry: A review10.3390/ma13051049 ↗
10. P2O5 as an Effective Nucleating Agent of Lithium Disilicate Glass-Ceramics10.3363/prb1992.19.0_36 ↗
11. Crystallization of lithium disilicate-based multicomponent glasses - Effect of silica/lithia ratio10.1016/j.ceramint.2014.08.074 ↗
12. Controlled Parallel Crystallization of Lithium Disilicate and Diopside Using a Combination of Internal and Surface Nucleation10.3389/fmats.2016.00047 ↗
13. The effect of P2O5 on the crystallization and microstructure of glass-ceramics in the SiO2–Li2O–K2O–ZnO–P2O5 system10.1016/S0022-3093(99)00647-X ↗
14. Rheinberger V. Studies of crystal phase formations in high-strength lithium disilicate glass–ceramics10.1016/j.jnoncrysol.2006.06.039 ↗
15. The role of P2O5, TiO2 and ZrO2 as nucleating agents on microstructure and crystallization behaviour of lithium disilicate-based glass10.1007/s10853-012-6793-4 ↗
16. Effects of TiO2 and P2O5 on solarization and crystallization of photosensitive lithium silicate glass10.1016/j.jnoncrysol.2015.09.018 ↗
17. Trace phase formation, crystallization kinetics and crystallographic evolution of a lithium disilicate glass probed by synchrotron XRD technique
18. The preparation of the lithium disilicate glass-ceramic with high translucency
19. A new strengthening theory for improving the fracture strength of lithium disilicate glass-ceramics by introducing Rb or Cs ions
20. Different roles of phosphorus in the nucleation of lithium aluminosilicate glasses10.1016/j.jnoncrysol.2018.04.021 ↗
21. The roles of P2O5 and SiO2/Li2O ratio on the network structure and crystallization kinetics of non-stoichiometric lithium disilicate based glasses
22. Nucleation and crystal formation in lithium disilicate-apatite glass-ceramic from a combined use of X-ray diffraction, solid-state NMR, and microscopy
23. Quartz-containing glass-ceramics in the SiO2 –Li2O–K2O–MgO–CaO–Al2O3–P2O5 system10.1111/ijag.13095 ↗
24. Controlled precipitation of lithium disilicate (Li2Si2O5) and lithium niobate (LiNbO3) or lithium tantalate (LiTaO3) in glass-ceramics10.1016/j.jeurceramsoc.2017.08.032 ↗
25. Examining the phase evolution of lithium disilicate glass-ceramics with lithium tantalate as a secondary phase
26. Moulson · 1990
27. Glass–ceramics in dentistry: A review10.3390/ma13051049 ↗
28. Crystallization Process of a LiTaO3-Al2O3-SiO2 Glass
29. Experimental analysis and machine learning modeling of optical properties of lithium disilicate glass-ceramics comprising lithium tantalate as a secondary phase10.1111/ijag.16569 ↗
30. Experimental analysis and modeling of the Knoop hardness of lithium disilicate glass-ceramics containing lithium tantalate as a secondary phase10.1016/j.jnoncrysol.2022.121540 ↗
31. Correlation between the width of the glass transition region and the temperature dependence of the viscosity of high-Tg glasses10.1111/j.1151-2916.1993.tb03724.x ↗
32. Glass structure and glass properties
33. Glass forming ability and thermal stability of some Se–Sb glassy alloys10.1016/j.materresbull.2006.02.024 ↗
34. ASTM C. 1326. Knoop Indentation Hardness of Advanced Ceramics. ASTM Int, West Conshohocken, PA, 2018.
35. Updated definition of glass-ceramics10.1016/j.jnoncrysol.2018.01.033 ↗
36. Machinability and brittleness of glass-ceramics10.1016/S0924-0136(96)02275-3 ↗