1,721,010 research outputs found
Multiscale integration in microscopy characterization techniques: a powerful approach to solve thick and thin complex coating systems; some case studies
No full textABRASIVE WEAR OF A COBALT-BASED ALLOY - STELLITE 6B; INVESTIGATION BASED ON ION PROBING TECHNIQUES
No full textA nova organização da Universidade Italiana
No full textEste documento foi escrito baseando-se na experiência pessoal dos autores, os quais ensinaram e fizeram pesquisa por muitos anos na universidade, tendo ambos vivido pessoalmente as várias transformações que ocorreram na universidade italiana durante os últimos trinta anos. Muitos dos documentos citados foram retirados do volume do Ministério da Universidade e da Pesquisa Científica (MURST): “A reforma universitária”, Editora Salerno, 2001Il presente documento è stato scritto sulla base dell’esperienza personale degli autori, che hanno per molti anni insegnato e fatto ricerca nell’università, avendo entrambi vissuto personalmente le molteplici trasformazioni che si sono succedute nell’università italiana durante l’ultimo trentennio. Molti dei documenti riportati sono stati ampiamente tratti dal volume del Ministero dell’Università e della Ricerca Scientifica (MURST): “La riforma universitaria”, Salerno Editore, anno 2001
Rotating wheel test wear behaviour of structued coatings by means of abraded volume continuous measurement; some examples
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Adhesion of Ti/TiN multilayer PVD coatings on HVOF WC-Co substrate for wear resistant applications
No full textFocused ion beam and nanomechanical testing for high resolution materials chacarterizzation
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Rapid solidification of plasma sprayed advanced materials: nanostructure characterisation
No full textComposite ZrB2-SiC materials offer well known resistance to ablation at high temperature. An inert plasma spraying technique was used to manufacture composite ZrB2-SiC as potential thermal protection systems for composite based substrates. Due to the rapid solidification experienced by sprayed droplets, amorphous and/or nanostructured phases can be formed; advanced characterization techniques are therefore required in order to collect all the necessary data for process/product optimisation. In addition, silicon carbide, selected for its contribution to the oxidation resistance of the ceramic coating, is well known to be considered as a non sprayable material, due to the lack of a stable liquid phase. In this paper two issues are investigated: the first is the use of advanced characterization techniques, such as high resolution scanning and transmission electron microscopy, for microstructural analysis of plasma sprayed coatings. The second is the evaluation of possible implications of rapid solidification processes in composite systems for which at least one liquid phase is not stable, but, at the same time, the development of eutectic-like structures results in the formation of nanostructured stable solid phases
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