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Transparent Alumina - (aluminum oxide) Three Times Stronger Than Steel
www.rense.com ^ | 2-25-02

Posted on 05/01/2002 5:38:11 PM PDT by FatherTorque

Transparent Alumina -
Three Times Stronger Than Steel

A ceramic research lab in Dresden, Germany, has developed transparent Alumina by subjecting fine-grained (I'm guessing extremely fine-grained) aluminum to a whopping 1200 degrees Celsius ...the result of which is amazingly light but three times tougher than hardened steel of the same thickness, and it's see-through.
 
Needless to say, the Pentagon is quite interested.
 
 
 
 
For story (in German)
 
http://www.spiegel.de
 
According to a post at Slashdot (News for Nerds) this is not transparent aluminum but transparent Alumina, which is aluminum oxide - Al2-O3.



Also found this link here, which already has translations from the German website.


TOPICS: News/Current Events; Technical
KEYWORDS: aluminum; oxide; realscience; techindex; transparent
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To: Brett66
Oh, and I was also corrected on the pronunciation of aluminum...it's 'al-you-min-ee-um'. .

Not according to my dictionary, I think you were right the first time.

'al-you-min-ee-um', Where are you getting the "ee" sound from? If it was a French word, the "i" might give us the "ee" sound, but here, the "i" is already being used by the "min" sound.

41 posted on 05/01/2002 6:40:47 PM PDT by RJL
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To: roadcat
The first thought was Wonder Woman and her see-thru

Woo-hoo!

plane

Darn!

42 posted on 05/01/2002 6:43:19 PM PDT by steve-b
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To: RJL
Ah, I see that you have the same pet peeve as I.

I keep mine in a cage under the stairs and feed it 'A-loo-min-num'. :-)

43 posted on 05/01/2002 6:47:18 PM PDT by Riley
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To: Riley,RJL
I didn't write the article, I posted it from here:

sci-fighter.com

44 posted on 05/01/2002 6:48:39 PM PDT by Brett66
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To: RJL
Does anyone remember Muni-Mula (name of a planet) from a kids tv show about 40 years ago?
45 posted on 05/01/2002 6:54:21 PM PDT by cebadams
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To: RJL
Where are you getting the "ee" sound from?

Aluminium is a British spelling.

46 posted on 05/01/2002 6:54:57 PM PDT by Willie Green
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To: Bernard Marx;null and void
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MSI's sapphire windows are ideally suited for:


47 posted on 05/01/2002 6:55:00 PM PDT by LarryLied
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To: FatherTorque
Holy crap.
48 posted on 05/01/2002 6:57:58 PM PDT by Bloody Sam Roberts
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To: RJL
'al-you-min-ee-um', Where are you getting the "ee" sound from?

It's the British pronunciation, though I've never heard it with the 'you' in the second syllable. Probably because I was always so amused by the 'ee' syllable that I wasn't paying attention to anything else.

I had a visiting professor from Mexico my second semester of Physical Chemistry. He pronounced Helium as 'el-ee-oom.' Very funny.

49 posted on 05/01/2002 6:59:34 PM PDT by DallasMike
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To: FatherTorque
10 bonus points if you know what kind of computer Mr. Scott was talking to.

I believe it was a Mac.

50 posted on 05/01/2002 6:59:37 PM PDT by Bloody Sam Roberts
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To: The Duke
"Silent Running" starring Bruce Dern.

20 points if you can tell me the names of the three servo robots.


51 posted on 05/01/2002 7:02:23 PM PDT by Bloody Sam Roberts
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To: 1rudeboy
This would make nifty beer cans... Yeah, but how will you open it, if it's as tough , and strong as claimed?
52 posted on 05/01/2002 7:05:31 PM PDT by desertcry
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To: FatherTorque
This is big news? Fishing rod guides have been made from aluminum oxide for many years..rock-hard and smooth.
53 posted on 05/01/2002 7:08:44 PM PDT by FlyVet
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To: FatherTorque
HEY i could use some of that on my perpetual motion machine!!!!
54 posted on 05/01/2002 7:11:44 PM PDT by ATOMIC_PUNK
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To: FatherTorque
Oops. Bad Fish Causes Gurgling.

Bad News: I jumped to some erroneous conclusions, and my mailbox exploded. Transparent Aluminium doesn't exist.

Good News: This indicates many polite, educated people are actually reading the site, as none of the mail called me an idiot and about 80% of it was thoroughly educational.

Point of contention: The article states the substance in question is alumina, which I presumed was simply a German spelling of aluminum (despite being closer to a latin-based spelling)...partially spurred on by the caption to the picture in the original article actually saying "transparent aluminum." My science background not being in chemistry, I completely missed that alumina is shorthand for aluminium oxide... a ceramic, which is why it makes more sense for a company specializing in ceramics to have developed a transparent version of it.

Now, this doesn't make it any less impressive, because they've apparently managed to not only make it transparent, but seriously overcome the hardness (which usually also means brittleness) factor of alumina, if the firing tests are to be assumed to have been the German Federal Armed Forces shooting at them (especially if the US military has expressed an intrest in using it for visors or tank windows), rather than kiln firing tests performed by German Federal Dishwasher Assoc.

One other basic distinction in the field that my love of synonyms burned me on:

Hardness does not equal toughness. Metal is tough, as it will give before it breaks. Hardness, on the other hand, is resistance to deformation. A chicken bone is hard (and brittle). Soak that bone in vinegar, and the hardness goes down, the toughness goes up...it bends.

It was also pointed out that true transparent aluminum...a metal, would be isotropic (strong in every direction, allowing it to bend), whereas this would be anisotropic (only strong in certain directions...in this case, presumably able to react well to bullets, but a toric twist could shatter it).

Lastly, a few readers pointed out that your average dinnerware is fired to 1305 C, so the 1200 C used to fire this material isn't the trick to it, it's gotta be the "in such a way" bit mentioned in the article that is the secret...maybe it's an ancient chinese secret.

Oh, and I was also corrected on the pronunciation of aluminum...it's 'al-you-min-ee-um'. My ironic sense of humour is taking great pride in having been corrected in the pronunciation of something I wrote. ; )

LMAOROTF

55 posted on 05/01/2002 7:15:21 PM PDT by ATOMIC_PUNK
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To: realpatriot
1. Light weight engines. (with easy diagnosis of ignition problems)

Isuzu was doing research on ceramic engine technology maybe 20 yrs ago. Too bad it never came to fruition. Supposedly would require no water cooling and therefore a lot more efficient. The little internet research i did says there are problems with the components cracking due to the extremes of heating and cooling.

56 posted on 05/01/2002 7:16:21 PM PDT by FlyVet
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To: Bloody Sam Roberts
"Silent Running" starring Bruce Dern.

20 points if you can tell me the names of the three servo robots.

Huey, Luey and Duey

57 posted on 05/01/2002 7:17:48 PM PDT by Centurion2000
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To: Centurion2000
Huey, Luey and Duey

Ooh, yer goood.

58 posted on 05/01/2002 7:18:33 PM PDT by Bloody Sam Roberts
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To: FlyVet
Isuzu was doing research on ceramic engine technology maybe 20 yrs ago. Too bad it never came to fruition.

I thought GM had accomplished that and put the technology to use in the Cadillac Northstar engines. Am I mistaken?

59 posted on 05/01/2002 7:20:26 PM PDT by Bloody Sam Roberts
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To: Bloody Sam Roberts
I don't know if you are or not. Do they run without water cooling? That was supposed to be the big deal with ceramic engines back then.
60 posted on 05/01/2002 7:25:58 PM PDT by FlyVet
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