High-Frequency EPR Spectroscopy of Tb3+ Ions in Synthetic Forsterite

Коновалов, А. А.; Lis, D. A.; Субботин, К. А.; Tarasov, V. F.; Zharikov, E. V.

doi:10.1007/s00723-013-0510-6

Cited by 11 publications

(12 citation statements)

References 13 publications

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“…Therefore, the forsterite ceramics using drift sands as raw materials have higher physical and mechanical properties than ARF sample. Finally, when sintered at 1300°C, the Fo(A) forsterite ceramics with more dense phases have the highest forsterite phase content of 95.70 wt %, the maximum bulk density of 3.02 g/cm 3 and the maximum Vickers hardness of 732.97 HV, while the Fo(B) forsterite ceramics with glass phase have the lowest apparent porosity of 0.73%, the lowest water absorption of 0.28% and the highest flexural strength of 110.76 MPa. Journal of the Ceramic Society of Japan 125 [3] 88-94 2017…”

Section: Discussionmentioning

confidence: 98%

“…The Fo(A) samples are composed of forsterite (3.21 3.33 g/cm ), quartz and glass phases (with a loose structure) ( Table 2). Based on the phase content of ceramics and the density of various phases, it can be concluded that the Fo(A) samples have higher density than Fo(B) and ARF samples, mainly due to Fo(A) samples consisting of the larger density sum of various phases caused by the dense phases such as spinel (3.604.10 g/cm 3 ) compared to other samples. On the other hand, unlike the Fo(A) and ARF ceramics, more drift sands are included in the Fo(B) ceramic, which contributes to the liquid phase sintering process and accelerates the densification of Fo(B) ceramic, so the apparent porosity and water absorption are greatly reduced.…”

Section: Bulk Density Apparent Porosity and Water Absorption Of Forsmentioning

confidence: 99%

“…This is related to the phase composition of ceramics. Fo(A) contains more dense phase of forsterite (3.33 g/cm 3 , 92.895.7 wt %) and hard phase of spinel (4.10 g/cm 3 ), which leads to the higher bulk density and Vickers hardness. The composition of Fo(B) samples contains more impurity cations introduced by drift sands.…”

Section: Effects Of Drift Sands On the Physical And Mechanical Propermentioning

confidence: 99%

“…Forsterite ceramic can be synthesized using high-silicon iron tailings and high magnesium raw materials when sintered at 1450°C for 36 h, which has a density of 0.81.6 g/cm 3 and a porosity of 4070%. Intermediate phases of hortonolite and magnesium metasilicate (MgSiO 3 ) remained and sintering at 16001650°C produced a high density 2.83.0 g/cm 3 and a high rupture modulus of 10.15 MPa.…”

Section: Introductionmentioning

confidence: 99%

“…8) It was found that the enstatite and MgO interphases are very stable in forsterite ceramic even though a sufficient solid-state reaction between magnesium oxide (MgO) and talc [Mg 3 Si 4 (OH) 2 ] occurs in a temperature range of 12001500°C for 2 h. 9) A high-strength forsterite ceramic can be prepared using magnesium oxide (MgO, 97 wt %) and talc [Mg 3 Si 4 O 10 (OH) 2 , 99 wt %] when sintered at 12001500°C, a maximum density of 91% and the highest mechanical properties were obtained respectively when sintered at 1500 and 1400°C. 10) A forsterite was prepared utilizing 57.62 wt % serpentine and 42.38 wt % magnesium chloride water solution when sintered at 1300°C for 2 h, a small amount of SiO 2 , MgSiO 3 and MgO still companied.…”

Section: Introductionmentioning

confidence: 99%

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The synthesis and properties of high-quality forsterite ceramics using desert drift sands to replace traditional raw materials

Wang

Shi

Wang

et al. 2017

J. Ceram. Soc. Japan

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High-quality forsterite ceramics were successfully prepared using desert drift sands to replace the traditional materials at lower temperatures, which not only saves mineral resources but also greatly reduces the cost of ceramic. Meanwhile, the effects of two different proportions of drift sands on the phase formation, physical and mechanical properties of ceramics were also investigated. The experimental results show that drift sands with impurity cations have the lower melting temperature compared to the pure quartz and easy to form liquid phase. As a result, the formation temperature (800°C) of forsterite phase falls by 300°C compared to the forsterite ceramic prepared using analytical reagent (1100°C). Furthermore, drift sands as raw materials can effectively improve the physical and mechanical properties of forsterite ceramics. Finally, the content of forsterite phase can reach up to 95.70 wt %, and the obtained forsterite ceramics show the best physical and mechanical properties when sintered at 1300°C for 2 h.

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Section: Discussionmentioning

confidence: 98%

Section: Bulk Density Apparent Porosity and Water Absorption Of Forsmentioning

confidence: 99%