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Electron Microscopy

Optical and chemical analysis is carried out using two ZEISS scanning electron microscopes: the Gemini Ultra 55 and the Gemini Leo 1550 electron microscope, both fitted with a high-resolution field emission cathode. The sophisticated sensor system, featuring an EBSD (Electron Backscatter Diffraction) sensor, also enables analysis of crystal orientation.

A ZEISS CrossBeam electron microscope, which includes an integrated ion beam source, enabling the in-situ removal of material on the same device, provides an ideal addition to this range of equipment. High-resolution 3D images of microstructure morphology can thus be generated layer by layer.

Contact

Thönnißen, Martina
corrosion lab / metallography / analytics
Chair for comprehensive corrosion and corrosion protection

Tel.: +49 (0) 241 80 - 98053
m.thoennissen@gi.rwth-aachen.de

Chemical Analysis

Fast and flexible analysis of the chemical composition of copper, steel, cast iron, aluminium and magnesium alloys during ongoing processes using a SPECTROMAXX spark emission spectrometer.

Contact

Weiß, Philipp M.Sc.
Iron castings
Chair for comprehensive Foundry Science and Foundry Institute

Tel.: +49 (0) 241 80 - 95886
p.weiss@gi.rwth-aachen.de

Computer Tomography

Using the computer tomograph METRIS XT H 320 LC, materials can be investigated 3-dimensionally. Sample sections of up to approx. 300 mm high can be scanned in the beam path of the 225 KV - 320 KV modular, micro-focus tube. In this way, wall thicknesses between 20 mm and 100 mm can be irradiated depending on the material and the resolution requirements. This enables 3D reconstructions of the test volume to be undertaken using a resolution of up to 15 microns.

X-ray diffractometry (XRD)

A series of structural properties of crystalline samples can be characterised using the PANALYTICAL X-ray diffractometer EMPYREAN. The fully modular system having a vertical goniometer serves to carry out the most diverse tasks in the field of X-ray diffraction: Phase analyses, texture and stress analyses, non-ambient analyses, reflectometry and thin-film analyses. The diffractometer is also furnished with a reaction chamber which was specially developed for investigating solids and solid-gas reactions at up to 900 °C and 10 bar.

Simultaneous thermogravimetric and dynamic scanning calorimetry (TG-DSC)

By means of simultaneous TGA-DSC, synchronous measurements of the solid’s weight changes can be measured as a function of temperature and time, and the transformation temperatures and changes in enthalpy can be determined for controlled temperature changes. In addition to this, investigations can also be performed using different gases by a water vapour generator and gas control.

Contact

Kutz, Tatiana M.Sc.
Corrosion and corrosion protection
Chair for comprehensive corrosion and corrosion protection

Tel.: +49 (0) 241 80 - 93012
t.kutz@gi.rwth-aachen.de