In the new surface laboratory the 3D surface topography of a specimen can be measured by using a white-light confocal microscope. Confocal microscopy works by a point distance measurement using a depth discrimination method in reflection mode. In a first focusing step light which is emitted from a point source is ...
The service group for computational materials science is equipped with a set of 12 fast Unix workstations, some of them with a dual-processor set-up, and a pool of about 40 and high end Windows-based workstations. The network is based on an optical fiber backbone. The laboratory uses MARC, ABAQUS, and DEFORM ...
The new scanning electron microscopy laboratory is equipped with a standard tungsten filament scanning electron microscope (JEOL JSM 800A) and a high resolution scanning electron microscope with a thermal field emission gun (JEOL JSM 6500 F). Both instruments are optimized for the investigation of microstructures and textures of crystalline materials by ...
This new service and research group conducts joint measurements of texture, microstructure, structure, phase, and chemical composition with very high lateral resolution and in 3 dimensions by using a Leo-Zeiss 1540 XB CrossBeam Workstation equipped with electron back scatter diffraction (EBSD) and EDX. This ultimate research tool combines a high resolution ...
The production of new metallic and non-metallic materials needs sophisticated technical equipment, especially for the preparation of poly- and single-crystal samples. Several induction furnaces are available to produce specimens of some 100 g up to 80 kg, either in high vacuum or in inert gas, and with melting temperatures up to ...
The metallographic preparation of metallic, intermetallic and non-metallic samples is the basis for their analysis or their further processing. Thus a large variety of different techniques are at hand for each preparation step, concerning cutting, sample mounting, grinding, mechanical or electrolytic polishing, chemically or electrochemically etching, and specimen coating. The subsequent ...
The service group for nanomechanical testing is equipped with a joint Hysitron nanoindenter and atomic force microscopy system (TriboIndenter). The instrument includes a XYZ-sample-stage and a set-up which combines a piezo-scanner as known from conventional atomic force microscopy with a transducer and a diamond indenter-tip. The XYZ-stage is used to position ...
In this new service group the determination of the plastic displacement field and the subsequent calculation of some tensor components of the plastic strain field at the surface of mechanically strained specimens is for sets of subsequent deformation steps conducted by using photogrametry. This is a digital image analysis method which ...
The joint projects pursued in the x-ray diffraction laboratory are essentially concerned with quantitative texture investigation by means of wide angle x-ray Bragg measurements. Experiments can be carried out in back reflection and in transmission mode. Additionally, phases and lattice parameters, residual stresses, and internal strain tensors can be determined. The ...
