Metallic Materials — Research — Characterization of metals and alloys with nanoscaled microstructures

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nano characterization

internal oxidation

characterization of nanostructures

Nanostructuring offers the potential to drastically change both structural and functional properties of a material. Thus, new applications and application fields become accessible that cannot be covered by microscale microstructures.

One of the reasons for the unique properties of nanomaterials is that they contain a high volume fraction of interfaces (grain or phase boundaries). For assessing the structure-property relationship of nanomaterials, it is first necessary to characterize the internal interfaces. Until present, numerous open questions concerning and grain and phase boundaries in nanocrystalline materials remain.

It is worth noting that conventional TEM techniques are at their limit when characterizing ultra fine grained materials. It is necessary to further develop advanced TEM techniques to gain the required information.

Our research work aims at a better understanding of both internal interfaces and thermodynamically metastable structures.
Emphasis is placed on mechanisms of effects that stabilize the nanostructures and slow down or prevent coarsening.

grain size distribution of a nanomaterial

$nano beam diffraction on two nanocrystals$

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