“Wouldn't a closed-cell nickel foam with hydrogen in the closed cells be intriguing?”
I would suggest using a copper nickel foam to start out with. http://www.americanelements.com/nicufoam.html Then remove the copper from the foam with an acid bath to increase the porosity of the foam in the fashion of Celani. Cheers: Axil On Wed, Oct 10, 2012 at 3:18 PM, Jack Cole <[email protected]> wrote: > I think I'll try both ways (AC and DC) to compare. > > I've been thinking about other materials too (such as tungsten/nickel wool > or foam). > > See here: > http://www.americanelements.com/tungsten-nickel-wool.html > > Here is some interesting info from the site on metal foam. > > *A metallic foam or ceramic foam* is a cellular structure consisting of a >> solid metal <http://www.americanelements.com/AEmetals.html> or >> ceramic<http://www.americanelements.com/Chloride_nitrate_etc_page.html> >> material >> containing a large volume fraction of gas-filled pores. The pores can be >> sealed, closed-cell foam, or they can form an interconnected network, >> open-cell foam. The defining characteristic of these >> foams<http://www.americanelements.com/AEfoams.html> is >> a very high porosity, typically 75-95% of the volume consisting of void >> spaces. The strength of foamed material possesses a power law relationship >> to its density, for example a 20% dense material is more than twice as >> strong as a 10% dense material. Metallic foams typically retain some >> physical properties of their base material. Foam made from non-flammable >> metal <http://www.americanelements.com/AEmetals.html> will remain >> non-flammable and the foam is generally recyclable back to its base >> material. Coefficient of thermal expansion will also remain similar while >> thermal conductivity is likely to be reduced. >> *Open-Cell Metal Foams.* Open celled >> metal<http://www.americanelements.com/AEmetals.html> foams >> are usually replicas using open-celled polyurethane foams as a skeleton. >> These foams have found a wide variety of applications in heat exchangers, >> energy absorption, flow diffusion and lightweight optics. Extremely >> fine-scale open-cell foams are used as high-temperature filters in the >> chemical industry. Metallic foams used in compact heat exchangers increase >> the heat transfer at the cost of an additional pressure drop. However, >> their use permits the physical size of a heat exchanger to be reduced >> substantially, and therefore also the fabrication costs. >> *Closed-Cell Metal Foams.*Closed-cell >> metal<http://www.americanelements.com/AEmetals.html> foams >> have been developed since the 1950s, but although prototypes were >> available, commercial production was started only in the 1990s. >> Close-celled metal <http://www.americanelements.com/AEmetals.html> foams >> are commonly made by injecting a gas or mixing a foaming agent into molten >> metal <http://www.americanelements.com/AEmetals.html>. The material is >> then stabilized using a high temperature foaming agent (usually nano- or >> micrometer sized solid particles). The size of the pores, or cells, is >> usually 1 to 8 mm. Closed-cell >> metal<http://www.americanelements.com/AEmetals.html> foams >> are primarily used as an impact-absorbing material. Unlike many polymer >> foams,metal <http://www.americanelements.com/AEmetals.html> foams remain >> deformed after impact and can therefore only be used once. They are light, >> typically 10-25% of the density of the >> metal<http://www.americanelements.com/AEmetals.html> they >> are made of, which is usually >> aluminum<http://www.americanelements.com/al.html>, >> and stiff. Closed-cell foams retain the fire resistant and recycling >> capability of other metallic foams but add an ability to float in water. > > > Wouldn't a closed-cell nickel foam with hydrogen in the closed cells be > intriguing? > > > > On Wed, Oct 10, 2012 at 8:05 AM, Teslaalset > <[email protected]>wrote: > >> I read some discussions on reversing polarity doing electrolysis with >> contantan coins. >> >> This is actually an interesting topic. >> Using alloys in oxidizing mode (coin = anode = +), whole surface of >> the coin will oxidize. >> Reversing polarity (coin = cathode = -) will have an interesting >> effect on the oxidized alloy: >> - first the oxidized 'most noble' metal will be reduced by combining >> hydrogen en metal oxide, forming the original metal and H2O. >> This will create local holes in the coin's surface where 'most noble' >> metal clusters are present. >> - second: the oxidized 'least noble' metal will not as easy be >> re-combined to metal and water because this oxide has a stronger O-M >> bond and won't re-combine with H2 as easy as the 'most noble' metal in >> the alloy. >> - repeating this cycle of revering polarity will creat tiny craters in >> the surface of the coin's surface, leaving the most noble metal >> (Nickel in this case) able to absorb Hydrogen in the coin-cathode >> mode. This method could create the NAE's Edmund Storms is referring >> to. >> >> This proces of oxidation of alloys and selective oxide removal is part >> of a Dutch patent published in 1997 (NL1001123C2) which is cited in >> Francesco Celani's patent published in Feb. 2012 (WO2011016014A2) >> describing improving hydrogen absorbtion of Nickel nano structures. >> Remember Celani is the one that demo'ed the Constantan setup.....so, >> could this be his pre-treatment method of his Constantan wire? >> >> >
