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This lattice strain was increased from to respectively with milling time of 50hours to 150hours. Scanning Electron Microscope (SEM) The SEM was used to follow the changes in the morphology of the ball milled sand powder. Figure: 4. The SEM micrograph indicates the prepared silica powder is irregular in shape and size.

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substantially, despite the fact that the grain size distributions obtained by sieving Key words: quartz moulding sands, foundry cores, mechanical properties, sand (, a highquality silica sand or lake sand), binder . the selected powder, » kg of sand was put into a ball mill.

Thus, this study focuses on preparation of silica sand nanoparticles from Ardama silica sand using integrated process consisting of ball milling and heating process in order to produce ultra fine and high purity NS, then characterize the product by means of TEM, SEM, AFM, and PSA to .

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