nThe grains of a powdered material are themselves composed of smaller polycrystalline crystallites. They determine the physical properties of the material.

The size and residual stress of these crystallites can be easily determined in ADM Suite.

Using the example of a tungsten powder, the grain size of which the manufacturer specifies as < 10 µ, the crystallite size is determined to be 256.6 ± 6.6 Å (25.7 ± 0.7 nm) and a negligible internal stress (microstress) of 0.067 ± 0.005%:

The control of X-ray diffractometers from different manufacturers with the provision of extremely comprehensive measurement methods through the ADM-Connect module makes ADM Suite particularly suitable for upgrading XRD systems that have been in operation for a long time.

The option to make isoangular sections is a unique selling point of the ADM software package. It gives the user the option of displaying intensities at the same diffraction angles from different diffractograms. This enables a visual representation of the intensity curve of identical interferences in several diffractograms and thus increases the efficiency in the analysis of material samples.

One application is the analysis of multiple components in a substance at different temperatures to follow reactions. The following 3D representation shows several diffractograms at synthesis temperatures between 600 and 640 degrees Celsius, which contain the quartz, calcite and wollastonite phases. The formation reaction of wollastonite from calcite and quartz  can be seen very well in the isoangular section (second image).

In the isoangular sections , the transformation of the phases can be seen very well (point of intersection):

No other analysis program offers you as many possibilities as ADM. Download your free trial today!

Róisín Murtagh, Editor for Wiley Analytical Science Magazine, interviews Dr. Alfred Wasserman,
Owner and CEO of RMSKempten. The subject of the interview is X-ray diffraction (XRD) and its development over the years.

The full article can be downloaded from the downloads page.

The Iller flows directly in front of the RMSKempten laboratory. In addition to water, the Iller transports large amounts of sediment from the Alps downstream. These are stored on the shore along the river as sand.

Our XRD tells us what this sand is made of:

This analysis was performed with ADM Suite. Download your free trial here.

With X-ray diffractometry (XRD analysis), your samples can be examined non-destructively. The method offers many possibilities for characterizing the samples:

• Which chemical compounds (phases) and in what proportions is your sample composed of? (phase analysis)
• Which crystallite sizes do the identified phases show? (crystallite size and microstress analysis)
• What is the degree of crystallinity of the individual phases?
• What are the stresses and strains in your sample (residual stress analysis by measuring the distortion of the metal lattice)?
• Are there preferred crystallographic orientations in your samples (orientation and texture analysis)?

The XRD analysis offers answers to many questions. Contact us! The RMSKempten laboratory offers you an XRD analysis tailored to your needs.