Talk:Metal foam

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I've added an image of an open cell foam and a mention of closed cell foams - as they're also quite a widespread material. This does not sit easily in the structure of the 'foams' page, where metal foams are currently listed as a subset of open cell foams - maybe worth rearranging.

[edit] Aluminum foams and the Oklo reactor

the article says: "naturally formed Aluminum foams have been found in the Oklo reactor... " This information seems incorect. Aluminum is highly unstable in geological formation, and never found in metallic form. This looks like somebody wanted to make a joke... —Preceding unsigned comment added by 129.105.37.155 (talk) 05:18, 10 December 2007 (UTC)