Synthesis and properties of lithium disilicate glass-ceramics in the system SiO2–Al2O3–K2O–Li2O

Tulyaganov, Dilshat U.; Agathopoulos, Simeon; Kansal, Ishu; Delgado-Valerio, Patricia; Ribeiro, M.J.; Ferreira, J.M.F.

doi:10.1016/j.ceramint.2009.04.002

Cited by 60 publications

(26 citation statements)

References 20 publications

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“…According to Tulyaganov et. al, the microhardness results obtained in lithium disilicate were 5.24 and 5.34 GPa [16], which are slightly lower than the average result and half of the highest result of this study. However, after isothermal heat treatments Huang et.…”

Section: Resultscontrasting

confidence: 45%

Investigation of Indentation Fracture Toughness (KIC) and Weibull Parameters of 0.25Li2O.2SiO2-0.75BaO.2SiO2 Glass-Ceramic

Ertuǧ

Çetiner

Gökçe

et al. 2017

Archives of Metallurgy and Materials

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In the present study, mechanical properties of 0.25Li 2 O.2SiO 2 -0.75BaO.2SiO 2 glass-ceramic were investigated. The transformations' temperatures were determined by DTA instrument. The optimum nucleation temperature was found to be 540°C. This suggested the crystallization temperatures as 675, 720 and 800°C. After carrying out crystallization heat treatments, Vickers indentation test was applied. In order to determine the indentation fracture toughness (K IC ), crack half-length ‚c' of the samples was measured. To calculate K IC , Young's modulus, E and the measured hardness, H v were used. Using K IC and probability of fracture ‚P', ln ln[1/(1 -P)] -ln K IC graph was drawn based on the Weibull distribution equation. Consequently, Weibull modulus, ‚m' and scale parameter, ‚K 0 ' were determined and compared with each other.

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Section: Resultscontrasting

confidence: 45%

Investigation of Indentation Fracture Toughness (KIC) and Weibull Parameters of 0.25Li2O.2SiO2-0.75BaO.2SiO2 Glass-Ceramic

Ertuǧ

Çetiner

Gökçe

et al. 2017

Archives of Metallurgy and Materials

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“…Further, due to its high thermal conductivity, trivalent rare earth doped scandia mixed glasses are very suitable host material for high power solid-state lasers [25,26]. Similarly considerable literature is available on emission features of different rare earth ions in Al 2 O 3 mixed laser hosts [27][28][29][30][31].…”

mentioning

confidence: 99%

Spectroscopy features of Pr3+ and Er3+ ions in Li2O–ZrO2–SiO2 glass matrices mixed with some sesquioxides

Rao

Kityk

Srikumar

et al. 2011

Journal of Alloys and Compounds

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“…Besides Li 2 O, SiO 2 , these materials also contain Al 2 O 3 and K 2 O to enhance the chemical durability [1,2], P 2 O 5 as a heterogeneous nucleating agent that promotes volume nucleation of the LS 2 phases [3][4][5][6] … and small amounts of rare earth oxides playing a role as colorants and fluorescent agents [7].…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF Nd2O3 ON THE CRYSTALLIZATION AND PROPERTIES OF GLASS CERAMIC IN Li2O–K2O–Al2O3–SiO2–P2O5 SYSTEM

Minh¹

2018

JST

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Glass ceramics (GCs), which often contain a small amount of rare earth oxides to improve their performance, are ideal for dental restorative applications. The aim of this study was to investigate the various effects of Nd 2 O 3 content (0-1 wt%) on crystallization and properties of GC derived from Li 2 O-K 2 O-Al 2 O 3 -SiO 2 -P 2 O 5 system. The glass blocks were formed from the molten at 1450 °C. Based on the DTA results, the glass samples were experienced by two-stage heat-treatment (600 °C/ 90 min + 720 °C/ 30 min) to change to ingots. After that, the ingot samples were fired in a hot pressing furnace EP3000 at 930 °C for 30 min. The results of powder X-ray diffraction (XRD) indicated that the final GCs contained crystals such as lithium disilicate (Li 2 Si 2 O 5 or LS 2 ), lithium metasilicate (Li 2 SiO 3 or LS) and the traces of lithium phosphate (Li 3 PO 4 ). With increasing Nd 2 O 3 content, the relative amount of LS phase increased slightly while LS 2 phase decreased. However, the final GC containing 0.75 wt% Nd 2 O 3 had the highest bending strength at 293 MPa, the lowest chemical solubility and relative high Vicker hardness. These samples had a high degree of crystallization and the highest relative content of desired LS 2 phase.

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Synthesis and properties of lithium disilicate glass-ceramics in the system SiO2–Al2O3–K2O–Li2O

Cited by 60 publications

References 20 publications

Investigation of Indentation Fracture Toughness (KIC) and Weibull Parameters of 0.25Li2O.2SiO2-0.75BaO.2SiO2 Glass-Ceramic

Investigation of Indentation Fracture Toughness (KIC) and Weibull Parameters of 0.25Li2O.2SiO2-0.75BaO.2SiO2 Glass-Ceramic

Spectroscopy features of Pr3+ and Er3+ ions in Li2O–ZrO2–SiO2 glass matrices mixed with some sesquioxides

EFFECTS OF Nd2O3 ON THE CRYSTALLIZATION AND PROPERTIES OF GLASS CERAMIC IN Li2O–K2O–Al2O3–SiO2–P2O5 SYSTEM

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