By Hans Peter Degischer, Brigitte Kriszt
The previous few years have obvious an expanding curiosity in porous steel fabrics, specifically in foams made up of aluminum or aluminum alloys. The stimulus for this lies in fresh strategy advancements which promise fabrics with larger caliber and cheaper price. in addition, the surroundings for the appliance of latest fabrics has vastly replaced. these days better calls for for passenger defense in cars or for simple fabrics recycling make steel foams appealing the place, many years in the past, an analogous fabric may were governed out for technical or budget friendly purposes. This instruction manual supplies any fabrics scientist and engineer keen on the study, improvement and alertness of steel foams an outline at the latest effects on new construction approaches, purposes and business makes use of in addition to the real subject of characterization and houses of those complicated fabrics.
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Additional resources for Handbook of Cellular Metals: Production, Processing, Applications
3 Conclusions There are the following possibilities for recycling, or reuse of cellular metals (especially cellular aluminum). x x x x Recycling of unreinforced cellular metals can be carried out as for packaging material (foils), or shredder scrap, by remelting, with an efficiency probably reduced to 80 % to produce bulk cast products from the secondary metal. In the case of recycling ALPORAS, the impurity level of Ca has to be controlled. Recycling of MMC foams can be done by extracting the matrix metal for conventional secondary products.
The most widely developed and investigated cellular metals are based on aluminum and its alloys. The general aspects of processing are described elsewhere [1À3] and specific presentations can be found in the proceedings of the conferences dealing with cellular metals [4À10]. The most important processing techniques are described in detail in subsequent chapters. -%. Cellular metals are classified according to the following criteria (Fig. 2-1). x x x The metal condition during production of porosity: liquid, solution or emulsion, solid.
3 State of Commercialization Currently the foaming technique described is still in the stage of industrial implementation. Nevertheless, a number of companies have already made commitments for a future production and are building up facilities . The joint effort of Schunk Sintermetalltechnik (Gieûen) and Honsel GmbH&Co KG (Meschede) is one example. 3). Alulight International GmbH is another example. It is a joint venture of SHW (Germany) and Eckart Austria. The company offers aluminum foam panels in sizes up to 625 mm q 625 mm, with thickness of 8À25 mm.
Handbook of Cellular Metals: Production, Processing, Applications by Hans Peter Degischer, Brigitte Kriszt