Prof. Khaled Habib
Kuwait Institute for Scientific Research (KISR), Kuwait
Title: Spatial Resolution Range of Nano-crystallization of Metallic Glasses by X-Ray Diffraction and Scanning Tunneling Microscopy
Abstract:
A fundamental study was conducted to characterize the boundary line between nano-crystallization of amorphous, i.e., short range ordered, structures and poly-crystallization, i.e., long range ordered, structures. The structure characterization of amorphous metallic glasses was carried out in as received condition and annealed conditions based on obtained data of X-ray Diffraction (XRD) and Scanning Tunnelling Microscopy (STM). The spatial resolution, i.e., boundary line, of nano-crystallization of the short ranged ordered and long ranged ordered structures was defined for the first time by the aid of the diffraction theory. The obtained results of the present study show that the diffraction theory, which was initially derived by Sherrer, can be extended to a spatial resolution not only to the boundary line between micro-crystallization of amorphous, i.e., short range ordered, structures and poly-crystallization, long range ordered, structures, but also, it can define the boundary line between nano-crystallization of amorphous, i.e., short range ordered, structures and poly-crystallization, long range ordered, structures.
Keywords: X-ray Diffraction (XRD), Scanning Tunnelling Microscopy (STM), Metallic Glasses, Amorphous Structure, Nano-crystallization Structure.
Biography:
Dr. Khaled Habib holds a Ph.D in Chemical. and Materials. Engineering. from the Optical Science and Technological Center of University of Iowa, Iowa, USA, 1988. He was a Post-doctoral Fellow at the Chem. Engr. Dept., and Mat. sci. Dept., of the Technical University of Aachen, Aachen, Germany, 1991-1992. He specializes in “Laser optical interferometry as non-destructive testing (NDT) methods of materials evaluation in corrosive media”. Mr. Habib has in his credit more than 123 articles in international refereed journals in his area of specialization. He is a fellow of the SPIE (http://spie.org/x38.xml). Also, he is a member fellow of the international Corrosion Council (ICC), (http://www.iccnet.org/ICCmembers_Kuwait.html). In addition, he is a Member of the editorial board of five Journals; the journal of Corrosion Science and Technology (j-cst.org/sub/committee.asp), the Journal of Environmental Science and Engineering A&B (http://www.davidpublishing.com/journals_info.asp?jId=1025), the American Journal of Applied Chemistry (http://www.sciencepublishinggroup.com/journal/peerreviewers.aspx?journalid=227), The journal of Advances in Petroleum Exploration and Development(http://cscanada.net/index.php/aped/about/editorialTeam), and Journal of Materials and Environmental Science (http://www.jmaterenvironsci.com/EditorialBoard.html). He has been a reviewer for a number of journals; Optics and Lasers in Engineering, Applied Optics, Optical Engineering, Optics and Lasers Technology, the Optical Expression, IEEE Transaction Instruments and Measurements, the ASTM journal of Testing and Evaluation, Electrochemical Society, Corrosion Science, Composite Science and Technology, Composite B, Surface and Coatings Technology, Electrochemica Acta, Electrochemical and Solid-State Letters, Serbian Chemical Society, Saudi Chemical Society, Engineering and Technology, Engineering and Technology ,Power Sources, and Materials and Design., Materials and Environmental Science, and the International Journal of Corrosion.