SPP 1062: Handhabung hochdisperser Pulver

在处理高度分散的粉末时，由于这种粒子系统的性质受表面现象和粒子相互作用的支配而产生问题。这意味着众所周知的机械工艺技术，特别是使用质量依赖效应的技术不再适用。通过术语“处理”，概括了粉末制备和最终应用这些粉末加工高质量产品之间的所有工艺步骤，特别是高度分散的粉末的调理，混合，运输和储存等步骤。这种粉末的特点是具有较高的比表面积值，换句话说，粉末系统远离其热力学平衡状态，导致粉末系统高度倾向于通过聚集、团聚、吸附和化学反应等现象来稳定。这项优先计划的目的是调查这些现象，以便支配它们并发展控制它们的技术。

While handling highly dispersed powders problems result due to the fact that properties of such particle systems are dominated by surface phenomena and particle interactions. It means that well-known techniques of the mechanical process technology using more especially mass dependent effects are no longer applicable. By the term "handling" all the process steps between the powder preparation and a final application of such powders for processing high quality products are summarised, especially steps like conditioning, mixing, transportation and storage of highly dispersed powders. Such powders are characterised by high values of the specific surface area, with other words, the powder system is far from its thermodynamic equilibrium state leading to a high tendency to stabilising the powder system by phenomena like aggregation, agglomeration, adsorption as well as chemical reactions. The aim of this priority programme is to investigate these phenomena in order to dominate them and to develop techniques for their controlling.