首页> 外文会议>Symposium on Cellular Metals and Polymers; 20041012-14; Furth(DE) >Control of the carbon content in metal hollow sphere structures by variation of the debindering conditions
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Control of the carbon content in metal hollow sphere structures by variation of the debindering conditions

机译:通过改变脱胶条件来控制金属空心球结构中的碳含量

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The present paper highlights results from the priority program "Cellular Metals" of the Deutsche Forschungsgemeinschaft (DFG SPP 1075). The knowledge of the mechanical properties of packed hollow spheres is essential for constructing lightweight hollow sphere structures with an adjustable strength to weight ratio. For a better understanding of the mechanics of hollow sphere structures, it is important to determine the microstructure and the mechanical properties of the cell wall. Due to the amount of organic components needed during the manufacturing of the hollow spheres, the control of carbon content in the final product is very important. At high carbon contents, the formation of carbides may lead to embrittlement and insufficient corrosion resistance. Carbothermic reduction with Fe_2O_3 addition in the cell walls proved to be a promising approach for the effective removal of carbon. Compression tests showed no effect of the carbon removal in the energy consumption of hollow sphere structures produced with the IFAM (Fraunhofer Institute for Manufacturing and Advanced Materials ) route.
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。填充空心球的机械性能知识对于构建强度和重量比可调的轻型空心球结构至关重要。为了更好地了解空心球结构的力学,确定孔壁的微观结构和力学性能非常重要。由于在空心球的制造过程中需要的有机成分的数量,最终产品中碳含量的控制非常重要。在高碳含量下,碳化物的形成可能导致脆化和不足的耐腐蚀性。在细胞壁中添加Fe_2O_3进行碳热还原是有效去除碳的有前途的方法。压缩测试表明,除碳对采用IFAM(弗劳恩霍夫制造和高级材料学院)路线生产的空心球结构的能耗没有影响。

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