Preparation and characterization of coating sodium trisilicate (Na2O.nSiO2) at calcium carbonate (CaCO3) for blowing agent in Mg alloy foam

The role of blowing agent in the manufacture of porous metal alloys is very important to produce the desired pore. The thermal stability and speed of foam formation have an effect on the resulting pore structure. In porous metal alloys, uniformity of size and pore deployment are the main determinant...

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Bibliographic Details
Main Authors: Erryani, Aprilia, Lestari, Franciska Pramuji, Annur, Dhyah, Kartika, Ika
Format: Conference Proceeding
Language:English
Subjects:
Appliance industry
Blowing agents
Calcium carbonate
Chlorofluorocarbons
Coating
Foaming agents
Magnesium base alloys
Pore size
Porosity
Silicon dioxide
Sodium
Sol-gel processes
Thermal stability
X ray spectrometers
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Summary:The role of blowing agent in the manufacture of porous metal alloys is very important to produce the desired pore. The thermal stability and speed of foam formation have an effect on the resulting pore structure. In porous metal alloys, uniformity of size and pore deployment are the main determinants of the resulting alloys. The coating process of calcium carbonate (CaCO3) has been done using Sodium trisilicate solution by sol-gel method. Foaming agent was pretreated by coating SiO2 passive layer on the surface of CaCO3. This coating aims to produce a more stable blowing agent so that the foaming process can produce a more uniform pore size. The microstructure of the SiO2 passive was observed using Scanning Electron Microscope (SEM) equipped by Energy Dispersive X-Ray Spectrometer (EDS) mapping. The results showed coating CaCO3 using sodium trisilicate was successfully done creating a passive layer of SiO2 on the surface of CaCO3. By the coating process, the thermal stability of coated CaCO3 increased compared to uncoated CaCO3.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5038284