NAME X-Ray Diffractometer (XRD)
X’Pert MRD diffractomer from PANalytical with Euler cradle. Ideal for measurement of residual stresses and crystallographic texture. Horizontal diffactometer with both Bragg-Brentano and parallel beam optics. Max. weight 500 g, max. height 24 mm. Two radiations available, Cu and Cr. Possibility of thin films characterization by Grazing Incidence X-Ray Diffraction. Software HIGH SCORE for phase identification; STRESS and TEXTURE for residual stresses and texture analysis, respectively. Indispensable technique for analysis and characterization of a wide range of materials.
FIELDS OF APPLICATION
Grinding and finishing technologies
MOST OUTSTANDING EQUIPMENT AND COMPONENTS
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BRUKER D8 ADVANCE A25 X-ray diffraction equipment
BRUKER D8 ADVANCE A25 X-ray diffraction equipment. It has a radius that can vary from 250 to 300 mm and allows working in reflection and transmission mode. It has several sample holder platforms: XYZ table completely controlled by software that allows the exact positioning of the sample or its mapping by means of the X-ray beam; Euler cradle (goniometer) that allows not only the rotation around the diffractometer axis, but also around the two axes perpendicular to it, making it ideal for the measurement of crystallographic textures and residual stresses by the PSI or side-inclination method; and platform with monitored rotation that allows working in reflection and transmission modes. The primary optics allow work in both Bragg-Brentano with automatic variable divergence slit and parallel beam, the latter including a Göbel mirror for Cu Ka radiation and a polycapillary module that works with the most common X-ray radiation, ideal for the measurement of textures and residual stresses. It has an ultra-fast 0D/1D LYNXEYE XE-T detector with dispersive energies and high resolution that eliminates fluorescence and kb radiation, and acts as a diffracted beam monochromator. It has Cu, Co and Cr radiation and is used for phase identification and quantification as well as for residual stress measurements, crystallographic textures and phase analysis in thin films by grazing angle.
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Co and Cr X-ray tubes
Parallel beam optics (pollicapilar lens, parallel plate collimator, graphite flat monochromator). Small angle slits for Grazing Incidence X-Ray Diffraction.
SERVICES OFFERED BY THE ASSET
Crystallographic texture
Measurement of the distribution of crystallographic orientations in bulk materials and thin films. Texture originates from forming processes of metallic materials, as well as after thin film deposition, in casting processes, etc.
Measurement of residual stresses
Measurement of superficial residual stresses due to machining, forming processes, thermal treatment, welding processes, additive manufacturing, thin film deposition etc. Measurement as a function of depth by material elimination with electrolytic polishing. Stress analysis usually with sen2psi method; measurement both in PSi and OMEGA mode.
Phase identification and quantification by conventional and grazing incidence in different materials and thin films. Quantification of crystallite size and micro-stresses.
Identification of crystallographic phases present in a material and their quantification (Rietveld method) in both bulk (conventional incidence) and thin film (GIXRD) materials. Quantification of crystallite size and micro-stresses based on the width of the diffraction peaks.
Quantification of fraction of retained austenite in steels
Measurement of amount of retained austenite in hardened steels based on the integrated intensity of several austenite and ferrite diffraction peaks, according to ASTM E975.
ENTITY MANAGING THE ASSET
Contact person:
Carmen García-Rosales
cgrosales@ceit.es