Re: [ATM] Microwave heating of glass

[James Crombie <jamescrombie@jamescrombie.com>]

Check out a Popular Science article here
http://www.popsci.com/popsci/how20/15499aa138b84010vgnvcm1000004eecbccdrcrd.html
It seems that Silicon Carbide absorbs microwave radiation and can it 
turn be used to heat metal or maybe Glass.

James Crombie
http://www.jamescrombie.com

David Weinshenker wrote:

> KR wrote:
> 
>>Hi all,
>>I remain interested in heating glass this way. Look at this link.  -----
> 
> 
> Link doesn't seem to be showing up...
> 
> I'm skeptical about how suitable an unmodified home oven
> will be for useful optical work, but I could see it could
> have some potential in an industrial setup.
> 
> I could see, for example, some value in a system where
> the ability to focus the heating on a relatively localized
> zone might be valuable: for example, instead of trying to
> fuse a stack of sheets in a conventional kiln (which would
> melt the edges first and thus trap air between the layers
> which would remain as the reported "large flat bubble" defect
> remaining after such attempts), it might be possible to start
> the heating in the middle of the stack and work outward,
> gaining more complete fusion. (Or do the same thing with
> a long rectangular slab, working from one end to fuse on
> layers?)
> 
> Aren't most normal glasses pretty "dark" at 10.6 um? Perhaps
> a CO2 laser could be used to initialize the microwave-absorbtive
> "hot spot"...
> 
> -dave w
> 
> 
> 
> 
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