Oxidation and Reduction of Ir(100) Studied by High-Energy Surface X-ray Diffraction

Nanostructure by high-energy X-ray diffraction

X-Ray Diffraction (XRD) has long been used to determine the atomic-scale structure of materials. This technique is based on the fact that the wavelength of X-rays is comparable to the distances between atoms in condensed matter. When a material exhibiting a long-range (i.e. at least micrometers), periodic atomic order, such as a crystal, is irradiated with X-rays it acts as an extended, well-de...

Surface Hardness Measurment and Microstructural Characterisation of Steel by X-Ray Diffraction Profile Analysis

An X-ray diffraction line will broaden considerably when steels change into martensitic structure on quenching. The results presented in this paper show that X-ray diffraction technique can be employed for a rapid and nondestructive measurement of hardness of hardened steel. Measurement on various quenched and tempered steels showed that the breadth of its diffraction peak increased with increa...

Glass Studied by Neutron and X-Ray Diffraction

The short-range order of K P 0 3 glass has been studied by diffraction methods in order to make evident the different behaviour of the P-O bonds within the P 0 4 tetrahedron. The oxygen sites are devided into bridging and terminal (non-bridging) oxygen sites, corresponding to two P 0 bond lengths, the difference of which amounts to 14.5 pm. Previous conclusions about the changes of the P 0 bond...

Deformation in Metallic Glasses Studied by Synchrotron X-Ray Diffraction

High mechanical strength is one of the superior properties of metallic glasses which render them promising as a structural material. However, understanding the process of mechanical deformation in strongly disordered matter, such as metallic glass, is exceedingly difficult because even an effort to describe the structure qualitatively is hampered by the absence of crystalline periodicity. In sp...

Topography of the graphene/Ir(111) moiré studied by surface x-ray diffraction