Alberto Ortona

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Questions related from Alberto Ortona

Best binder for replica of sintered ceramic oxide foams

I have been using several binders for oxide ceramic foams produced by replica of a polymeric template and sintering. None of them is the ideal one to me. Cracks can occur during drying, debinding,...

27 July 2017 1,374 5 View

Why pyrometer readings of the melting temperature of silicon are not correct?

We are melting silicon granules into furnace (Ar) and reading the temperature on the top of the bed with a pyrometer. The melting temperature readings are always higher than theory during...

12 June 2017 1,812 3 View

Why are large pores not filled by molten silicon if vacuum is not applied?

I wonder what effect should have vacuum on capillary action. When performing silicon infiltration at ambient pressure, large pores remain empty (first pict.) That does not happen when applying...

05 May 2015 9,371 6 View

Has anyone ever tried to drill a few microns hole into bulk graphite?

We need to realize a cylindrical capillary to validate reactive silicon infiltration simulations with experimental data.

31 December 2013 506 4 View