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Fractal Aggregation in MgO-B2O3-SiO2 Slag

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Published/Copyright: December 14, 2021
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 89 Issue 4

Abstract

The crystallization processes of MgO-B2O3-SiO2 slag have been investigated using two methods of heat treatment. Phase separation, which is similar to grape clusters, was observed when the amorphous slag was heat-treated at 800 °C, however, dendrites which are found to be 2MgO · B2O3, were formed at 850 °C. The micrographs of phase separation and the dendrites show fractal characteristics and their fractal dimensions were calculated using a density-density correlation function to be 1.90 and 1.63, respectively. In order to reveal their formation mechanisms, phase separation and the growth for 2MgO · B2O3 were simulated using the Monte-Carlo method based on spinodal decomposition, nucleation and growth, diffusion-limited aggregation (DLA) and random rain (RR) models in a computer. The simulation results show that phase separation corresponds to nucleation and growth, but the growth for 2MgO · B2O3 depends on the DLA.

P. Zhang, X. Zhao, S. Xie P. O. Box 17 92 Department of Chemical Engineering Guangxi University, Nanning 530004 P. R. China

  1. The authors wish to thank “the Doctoral Foundation of Liaoning Province of China” for financial support.

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Received: 1997-11-12
Published Online: 2021-12-14

© 1998 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Aufsätze
  3. Kinetics of Phase Separation in a Hypermonotectic Al–Pb Alloy
  4. Liquid–Liquid Interfacial Tension in the Demixing Metal Systems Ga–Hg and Ga–Pb
  5. Preparation, Structure and Physical Properties of Fe-, Co- and Ni-rich Melt-quenched Ribbons Containing Zr or Hf – Part IV: Thermal Stability; DSC, TEM and Thermomagnetic Studies
  6. Fractal Aggregation in MgO-B2O3-SiO2 Slag
  7. Phase Equilibria of the Decagonal AlCoNi Phase
  8. Free Energy of Mixing and Vapour Pressure of Liquid Ga-As, In-As, Ga-P and In-P Alloys
  9. Phase Equilibria in the Dy–Fe–Nd System at 500 °C
  10. Determination of Stress Gradients by X-ray Diffraction: Comparison of Different Methods and Applications
  11. Non-Linear Denoising with Wavelet Transformation
  12. Effect of Cold Working and Annealing on Grain Size and Hardness of a Zr-2.5Nb Alloy
  13. Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
  14. Personen
  15. Buchbesprechungen
  16. Terminkalender
https://doi.org/10.3139/ijmr-1998-0047

Articles in the same Issue

  1. Frontmatter
  2. Aufsätze
  3. Kinetics of Phase Separation in a Hypermonotectic Al–Pb Alloy
  4. Liquid–Liquid Interfacial Tension in the Demixing Metal Systems Ga–Hg and Ga–Pb
  5. Preparation, Structure and Physical Properties of Fe-, Co- and Ni-rich Melt-quenched Ribbons Containing Zr or Hf – Part IV: Thermal Stability; DSC, TEM and Thermomagnetic Studies
  6. Fractal Aggregation in MgO-B2O3-SiO2 Slag
  7. Phase Equilibria of the Decagonal AlCoNi Phase
  8. Free Energy of Mixing and Vapour Pressure of Liquid Ga-As, In-As, Ga-P and In-P Alloys
  9. Phase Equilibria in the Dy–Fe–Nd System at 500 °C
  10. Determination of Stress Gradients by X-ray Diffraction: Comparison of Different Methods and Applications
  11. Non-Linear Denoising with Wavelet Transformation
  12. Effect of Cold Working and Annealing on Grain Size and Hardness of a Zr-2.5Nb Alloy
  13. Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
  14. Personen
  15. Buchbesprechungen
  16. Terminkalender
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