Materials science

[Mark]

1750 C or 3150 F
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 75665&rd=1
2100 C or 4000 F
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 69878&rd=1
And something pretty, an all surface area platinum spark plug of sorts. It would be interesting to make an all platinum pulsejet. Or too, an all copper pulsejet running on methanol would react catalytically before meltdown as well. Platinum melts at 1768 C or 3214 F according to one site. Note platinum beats out the aluminum oxide crucible.
Iron melts at 1538 C or 2800 F.
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Mark

[steve]

WOW.
why would you need a platnium container anyway?

[Mark]

WOW.
why would you need a platnium container anyway?

To have the most expensive jam jar, I don't know. And how many can say they have a platinum pulsejet? For a very small pulsejet, platinum coated walls would react with methanol helping to burn the fuel better perhaps. You can melt your car's platinum coated ceramic catalytic converter by running rich with methanol. I thought it would be fun to make a howler tube using the super surface area of a catalyst coated ceramic honeycombed catalytic converter. With certain high surface area platinum on alumina, you could just pour in your methanol and the howler tube could start up like magic. What fun!
Here's an method for melting metal that looks kind of interesting for forming/casting small pulsejets perhaps.
http://home.c2i.net/metaphor/mvpage.html
Mark

[Mark]

PS I have been harping on platinum for years now. It's just fun to play with. I have platinum boats, platinum wire, platinum gauze, and platinum on asbestos, alumina, and carbon. Platinum boats are little troughs for doing high temperature testing. The platinized asbestos is used for a hand warmer, you are suppose to use a petroleum product and preheat the wick, but by using methanol the thing heats up all by itself and gets way to hot to hold!
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... otohosting
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... otohosting
Pictured in my attachment are two catalytic lighters as well, both ignite spontaneously as soon as air is allowed to reach the methanol vapors stored in a cotton wick, just take the caps off and the little elements glow and then ignite the methanol impregnated wicks. These lighters are from the ~1940's and I got them new on eBay for ~$20.00
Mark

[Mark]

http://www.kitco.com/charts/popup/pt1825nyb.html