Development of integrated methods, based on nanoindentation and Focused Ion Beam (FIB), for space resolved mechanical characterization
My work has contributed to the development of a procedure for the proper evaluation of mechanical maps in multi-phase materials, publication. This activity was published as “Mechanical property measurements of heterogeneous materials by selective nanoindentation: Application to LiMn2O4 cathode” (Materials Science & Engineering A 593 (2014) 92–102)
The purchase of a new head of the nanoindenter has given the opportunity to further implement the development of the technique for the mapping of the elastic modulus and hardness, by the use of the so called ultra-fast indentation mapping. The work has resulted in the realization of an “application note” which was internationally released by Agilent technology entitled: “CSM and DCM-Express Nanoindentation Mapping on Lithium/Polymer Battery Composites” (Agilent Technologies, 2013).
Agilent application note are written in the form of short papers, can only be written after invitation. They are peer reviewed and are permanently published online on Agilent website.
My work has also been focused on the use of the FIB and the implementation of a technique for the characterization of residual stress state on a micron-scale, a technique which was already developed in the past by the Materials Science group at Roma TRE.
My original contribution has been to fill the gap represented by the limitations of this technique, in order to make this technique able to measure the residual along multiple directions.
The article “Metodo della Rosetta Micrometrica per la misura multidirezionale degli stress residui tramite tecnologia a fascio ionico focalizzato”, was carried on the technique able to measure the residual stresses along multiple directions and published in the scientific journal La Metallurgia Italiana.
Finally, I have focused my work on the space-resolved measurements of the residual stress in dental prostheses. This is a first-time measurement in the literature, where no papers are present where residual stress is measured on the Zirconia-porcelain interface of a dental prosthesis. A paper has been written and was submitted to the international journal “Dental Materials” on January 2015 and presented in ADM congress 2014.