Professor Jan Sieniawski is a Head of Department of Material Science at the Faculty of Mechanical Engineering and Aeronautics and a Head of R&D Laboratory of Aerospace Materials of the Rzeszow University of Technology. He graduated from Silesian University of Technology in Gliwice in 1972. His scientific activity covers topics in the area of physical metallurgy of aerospace materials – titanium and aluminium alloys, nickel and cobalt-based superalloys, development and characterization of single crystal castings and thermal barrier coatings on the elements of the hot section of gas turbines. Prof. Sieniawski is a founder member of the Polish Materials Society, member of The Committee on Materials Science and Committee on Machine Building of the Polish Academy of Sciences. He is an author and co-author of 10 books and over 370 papers in domestic and international scientific journals and conference proceedings.