| NUKLEONIKA 2012, 57(4):521-528
APPLICATION OF NUCLEAR TECHNIQUES FOR CHARACTERIZATION
OF MATERIALS SURFACES: OWN INVESTIGATIONS EXAMPLES
Bo¿ena Sartowska1, Jerzy Piekoszewski1,2, Lech Waliœ1, Wojciech Starosta1, Marek Barlak2, Lech Nowicki2, Renata Ratajczak2
1 Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
2 National Centre for Nuclear Research (NCBJ),
7 Andrzeja So³tana Str., 05-400 Otwock/Œwierk, Poland
Different methods and techniques for material characterization are often used as a standard procedure for the determination of material properties. Nuclear techniques provide new and more detailed information about the investigated materials. The main goal of the carried out experiments was to improve surface properties including wear, corrosion and high temperature oxidation resistance. Modification processes were carried out using high intensity pulsed plasma beams – HIPPB (106–108 W.cm–2) generated in a rod plasma injector (RPI). In most solid materials such treatment leads to a fast transient melting of the surface layer of the substrate followed by rapid crystallization. Heating and cooling processes are of non-equilibrium type. Initial and modified materials were characterized using different investigation methods including nuclear techniques. Results of the used nuclear techniques such as nuclear reaction analysis (NRA), Rutherford backscattered spectroscopy (RBS) and conversion electron Mössbauer spectroscopy (CEMS) are presented in the paper.
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