Dispersion stability of SiC, SiCN and Si3N4 ultrafine powders in aqueous and nonaqueous media
Апстракт
A successful colloidal processing of ultrafine powders to produce high quality ceramic materials gives demand for stable, high degree particle dispersions. The stability of ceramic suspensions on the basis of SiC, Si3N4 and SiCN nanopowders in water and organic solvents (octane, benzene, toluene, benzyl alcohol and 1-octanole) was examined within 24 hours by means of screen sedimentation tests. Experimental results of the settling velocities were related to the calculated values of the total interaction potential energy between the particles interacting over the solvent molecules-the dispersion (van der Waals) attraction in case of organic liquids in the absence of dispersants, and a combination of dispersion attraction acid electrostatic forces in case of water, and finally to the physical properties of the used solvents.
Кључне речи:
electrostatic interaction / stability / suspension / Van der Waals interactionИзвор:
Materials Science Forum, 2000, 352, 97-104Напомена:
- Trends in Advanced Materials and Processes, 3rd Yugoslov-Materials-Research-Society Conference, Sep 20-24, 1999, Herceg Novi, Yugoslavia
Колекције
Институција/група
VinčaTY - JOUR AU - Čerović, Ljiljana S. AU - Milonjić, Slobodan K. AU - Bahloul-Hourlier, D AU - Kićević, Dušan M. PY - 2000 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6303 AB - A successful colloidal processing of ultrafine powders to produce high quality ceramic materials gives demand for stable, high degree particle dispersions. The stability of ceramic suspensions on the basis of SiC, Si3N4 and SiCN nanopowders in water and organic solvents (octane, benzene, toluene, benzyl alcohol and 1-octanole) was examined within 24 hours by means of screen sedimentation tests. Experimental results of the settling velocities were related to the calculated values of the total interaction potential energy between the particles interacting over the solvent molecules-the dispersion (van der Waals) attraction in case of organic liquids in the absence of dispersants, and a combination of dispersion attraction acid electrostatic forces in case of water, and finally to the physical properties of the used solvents. T2 - Materials Science Forum T1 - Dispersion stability of SiC, SiCN and Si3N4 ultrafine powders in aqueous and nonaqueous media VL - 352 SP - 97 EP - 104 UR - https://hdl.handle.net/21.15107/rcub_vinar_6303 ER -
@article{ author = "Čerović, Ljiljana S. and Milonjić, Slobodan K. and Bahloul-Hourlier, D and Kićević, Dušan M.", year = "2000", abstract = "A successful colloidal processing of ultrafine powders to produce high quality ceramic materials gives demand for stable, high degree particle dispersions. The stability of ceramic suspensions on the basis of SiC, Si3N4 and SiCN nanopowders in water and organic solvents (octane, benzene, toluene, benzyl alcohol and 1-octanole) was examined within 24 hours by means of screen sedimentation tests. Experimental results of the settling velocities were related to the calculated values of the total interaction potential energy between the particles interacting over the solvent molecules-the dispersion (van der Waals) attraction in case of organic liquids in the absence of dispersants, and a combination of dispersion attraction acid electrostatic forces in case of water, and finally to the physical properties of the used solvents.", journal = "Materials Science Forum", title = "Dispersion stability of SiC, SiCN and Si3N4 ultrafine powders in aqueous and nonaqueous media", volume = "352", pages = "97-104", url = "https://hdl.handle.net/21.15107/rcub_vinar_6303" }
Čerović, L. S., Milonjić, S. K., Bahloul-Hourlier, D.,& Kićević, D. M.. (2000). Dispersion stability of SiC, SiCN and Si3N4 ultrafine powders in aqueous and nonaqueous media. in Materials Science Forum, 352, 97-104. https://hdl.handle.net/21.15107/rcub_vinar_6303
Čerović LS, Milonjić SK, Bahloul-Hourlier D, Kićević DM. Dispersion stability of SiC, SiCN and Si3N4 ultrafine powders in aqueous and nonaqueous media. in Materials Science Forum. 2000;352:97-104. https://hdl.handle.net/21.15107/rcub_vinar_6303 .
Čerović, Ljiljana S., Milonjić, Slobodan K., Bahloul-Hourlier, D, Kićević, Dušan M., "Dispersion stability of SiC, SiCN and Si3N4 ultrafine powders in aqueous and nonaqueous media" in Materials Science Forum, 352 (2000):97-104, https://hdl.handle.net/21.15107/rcub_vinar_6303 .