Another indication of the use of 'selective oxidation' in Constantan by Celani can be found on slide 12 of an earlier presentation on his use of ISOTAN 44 in his demo setup:
https://docs.google.com/file/d/0B8mt4mJOTGvBeXJCNXNUdEJVME0/edit?pli=1 This points again to the method describe in the Dutch patent that Celani backward cited. (see my earlier mail in this thread) On Wed, Oct 10, 2012 at 9:43 PM, Axil Axil <janap...@gmail.com> wrote: > “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 <jcol...@gmail.com> 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 or ceramic 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 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 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 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 foams have been developed since >>> the 1950s, but although prototypes were available, commercial production was >>> started only in the 1990s. Close-celled metal foams are commonly made by >>> injecting a gas or mixing a foaming agent into molten metal. 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 foams are primarily used as an >>> impact-absorbing material. Unlike many polymer foams,metal foams remain >>> deformed after impact and can therefore only be used once. They are light, >>> typically 10-25% of the density of the metal they are made of, which is >>> usually aluminum, 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 <robbiehobbiesh...@gmail.com> >> 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? >>> >> >
