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Questions related from Alberto Ortona
Dear all, we are trying to impregnate a porous ceramic body with furfuryl alcohol to get as much carbon as possible upon pyrolysis Any suggestion on how to handle the procedure? I mean...
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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,...
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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...
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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 9,439 6 View
Reactive silicon infiltration is accomplished putting silicon lumps in contact with a porous carbonaceous preform. Often the two materials are separated by a wick. Then the set up is heated (with...
14 January 2015 8,302 7 View
I am wondering if fenolic or furan resins can be UV cured. If yes which catalyzer is used?
03 December 2014 5,301 1 View
It is well known that SiSiC ceramics in some conditions (i.e. temperatures above the melting temperature of Si) show the “sweating phenomenon”. It means that molten silicon in excess inside their...
12 September 2014 8,491 8 View
I am planning to prepare several Silicon alloys for reactive infiltration experiments. I was wondering if there are available small lab furnaces to do that, if they are easy to handle, and how...
17 March 2014 8,860 3 View
We need to realize a cylindrical capillary to validate reactive silicon infiltration simulations with experimental data.
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