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首页> 外文会议>Symposium on Cellular Metals and Polymers; 20041012-14; Furth(DE) >Closed Cell Metal-Hollow-Sphere-Structures Made by Expandable Polysterene Technology
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Closed Cell Metal-Hollow-Sphere-Structures Made by Expandable Polysterene Technology

机译：膨胀聚苯乙烯技术制成的闭孔金属空心球结构

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摘要

The present paper highlights results from the priority program "Cellular Metals" of the Deutsche Forschungsgemeinschaft (DFG SPP 1075). A new powder metallurgical process for the production of regular closed cell metal foam has been developed. Using this new technique various metals and alloys are applicable. Moreover substrate is an important part and expandable polystyrene spheres are used. The technology is based on a spray coating process of polystyrene spheres with a metal powder slurry. In special moulds the cavity between the coated substrate is eliminated by expansion of the polystyrene core and all spheres transform into a polyhedron shaped cell structure. The subsequent heat treatment includes the debinding and sintering. The new regular metal foams are characterised by high homogeneity, due to similarity of the polyhedron cells with homogeneous wall thickness in a very close tolerance. A low structural density down to 0.3 g/cm~3 (for steel) can be achieved. Details of the technology and first estimations of the mechanical properties of this cellular structure will be presented.
机译：本白皮书重点介绍了德国科学基金会（DFG SPP 1075）的优先项目“蜂窝金属”的结果。已经开发出一种用于生产规则闭孔金属泡沫的新型粉末冶金工艺。使用这种新技术，可以使用各种金属和合金。此外，基材是重要的部分，并且使用可膨胀的聚苯乙烯球。该技术基于聚苯乙烯球与金属粉末浆料的喷涂工艺。在特殊的模具中，通过聚苯乙烯芯的膨胀消除了涂覆基材之间的空腔，并且所有球体都转变为多面体形状的孔结构。随后的热处理包括脱脂和烧结。新的常规金属泡沫的特征是高均质性，这是由于多面体孔具有相似的壁厚，且壁厚均匀，公差非常接近。可以实现低至0.3 g / cm〜3（对于钢）的低结构密度。将介绍该技术的详细信息以及该蜂窝结构的机械性能的初步估计。

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