Volumetric and Size Characterization of Void Morphologies in Thermally Sprayed Metallic Deposits using Scattering Techniques

The pore microstructure of thermal spray coatings can be described as a combination of interlamellar pores, intralamellar cracks, and volumetric globular pores. This complex pore morphology can strongly influence the properties of the deposited layer. In this paper, the authors use a multiple small-angle neutron scattering (MSANS) technique to characterize the pore system in NiCrAlY layers. It is shown that the inter-lamella system is of utmost importance. Paper includes a German-language abstract.