Topic
Åkermanite
About: Åkermanite is a research topic. Over the lifetime, 31 publications have been published within this topic receiving 617 citations.
Papers
TL;DR: In this article, the synthesis of calcium magnesium silicate (akermanite, Ca 2 MgSi 2 O 7 ) using eggshell biowaste (as calcium source), magnesium nitrate and tetraethyl orthosilicate (TEOS) as starting materials was adopted.
169 citations
TL;DR: In this paper, the mineral/liquid partition coefficients of REE (La, Sm, Eu, Gd, Tb, Yb and Lu), Sc and Sr are reported for the minerals perovskite, spinel and melilite in synthetic systems.
90 citations
TL;DR: In this article, Turkish blast-furnace slags mixed with 3 and 5 wt% titania (TiO2) were used for Turkish glass-ceramic materials.
Abstract: Glass-ceramic materials were developed from Turkish blast-furnace slags mixed with 3 and 5 wt% titania (TiO2). On the basis of the DTA and the dilatometry analyses, nucleation experiments were carried out at 725 °C and crystallization was performed at 950 and at 1100 °C. DTA and X-ray diffraction studies conducted on the glass samples devitrified at 950 °C revealed glassy regions and small amounts of gehlenite (Ca2Al2SiO7) and merwinite (Ca3MgSi2O8) phases whereas complete transformation to melilite solid solution of akermanite (Ca2MgSi2O7) and gehlenite phases occurred for those crystallized at 1100 °C. Optical microscopy and SEM investigations on the slag glass-ceramic crystallized at 950 °C revealed large crystals due to surface crystallization whereas bulk crystallization was evident for those crystallized at 1100 °C. For both cases, the crystalline size decreased with increasing nucleant content. Wear, hardness, fracture toughness and bending properties of the slag based glass-ceramic material were enhanced with the increase in nucleant content and the crystallization temperature.
76 citations
TL;DR: In this paper, diffusion profiles of 18O tracer in single crystals of gehlenite and akermanite following annealing at 1000°-1300°C have been determined by a depth profiling technique using secondary ion mass spectrometry.
71 citations
TL;DR: In this paper, a modified molten blast furnace (BF) slag was prepared and the crystallization behavior of the modified BF slag using differential thermal analysis (DTA), X-ray diffraction (XRD), and field emission scanning electron microscope (FESEM).
Abstract: Glass ceramics from modified molten blast furnace (BF) slag were prepared. The crystallization behavior of the modified BF slag was characterized using differential thermal analysis (DTA), X-ray diffraction (XRD), and field emission scanning electron microscope (FESEM). The crystallization kinetics results indicated that the crystallization activation energy initially decreased and subsequently increased with increasing CaO/SiO2. The crystallization temperature and the crystallization index (n) decreased from 916 to 867 °C, and 5.66–1.13, respectively. The crystallization mechanism transformed from bulk crystallization to surface crystallization. By XRD analyzing, Melilite was developed as the main crystal phase, and the transformation of crystal from akermanite to gehlenite was observed. The rapid surface crystallization was beneficial for maintaining the shape of glass ceramics. The complex replacement in melilite crystals resulted in the micro cracks in glass ceramics, therefore led to the decrease of flexural strength of glass ceramics
64 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 1 |
| 2018 | 1 |
| 2017 | 1 |
| 2016 | 1 |
| 2015 | 1 |
| 2012 | 2 |