dc.contributor |
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.contributor |
Jiménez Piqué, Emilio |
dc.contributor.author |
Turón Viñas, Miquel |
dc.date |
2012-09 |
dc.identifier.uri |
http://hdl.handle.net/2099.1/17264 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos |
dc.subject |
Tungsten carbide-colbalt alloys --Testing |
dc.subject |
Focused ion beams |
dc.subject |
Tomography -- Industrial applications |
dc.subject |
Aliatges de carbur de tungstè i cobalt -- Proves |
dc.subject |
Feixos d’ions focalitzats |
dc.subject |
Tomografia -- Aplicacions industrials |
dc.title |
FIB tomography of WC-Co composites |
dc.type |
info:eu-repo/semantics/masterThesis |
dc.description.abstract |
The development of new methods of materials inspection allows a visualization and
characterization of materials, increasingly accurate. So far, observation, characterization
and study of materials were carried out using two-dimensional projections and images,
which offer only a partial view of reality.
A recent 3D-microscopy method, focused ion beam (FIB) tomography, has been used to
characterize different tungsten carbide – cobalt samples. With this method, high resolution
images of the entire internal volume can be obtained, which has been used to threedimensional
reconstruction of microstructure of carbides and binder, allowing the
characterization of material as is, avoiding the lack of information of two-dimensional
projections.
This 3D-data can also be used for finite element simulations, in order to understand and
correct the mathematical models currently used for micro-mechanical analysis of the
material.
Thus, the aim of this project is to describe a method for obtaining and reconstruction of the
microstructures and its analysis; comparing obtained 3D-data with information based on
two-dimensional methods appeared in the literature and analysing its reliability and
applicability. For that, three different WC-Co grades were analysed.
This described technique has proved to be a reliable method to characterise and analyse the
real material as is. Obtained results from three-dimensional analysis are coherent with
reported values in the literature. Also, a new parameter, skeleton density of binder phase
( ), is described, and parameters difficult to obtain by two-dimensional analysis, like
interphase area or specific surface area can be measured directly from three-dimensional
reconstruction. |