Programa de Doctorat en Ciència i Enginyeria dels Materials: Recent submissions
Now showing items 41-60 of 90
Assessment of corrosion-induced damage in the mechanical contact response of cemented carbides at different length scales
Cemented carbides, also referred to as hardmetals, are composite materials consisting of brittle refractory carbide phase (generally WC) embedded in a metallic matrix. Such microstructure leads to an outstanding combination ...
Caracterización de la unión vidrio-metal en la tecnología Glass to Metal Seal y el estudio de nuevos materiales y procesos de fabricación
This doctoral thesis has been carried out at the company VAC-TRON S.A., together with the Department of Materials Science and Engineering of Universitat Politècnica de Catalunya, in the Besós (EEBE) and Vilanova i la Geltrú ...
Chemical design and validation of Ca 2+ -releasing platforms to promote vascularization in tissue regeneration
An insufficient vascularization of the wound site is often the cause of failure in tissue regeneration. The use of cell therapy or growth factors has introduced promising results, nevertheless, they are risky, expensive ...
Development and characterization of mineral-filled (calcium carbonate or talc) polypropylene porous membranes obtained by extrusion
One of the techniques to make porous membranes from polymers is based on the stretching a polymer film containing a row-nucleated !amellar structure.This special crystalline structure may be achieved using a processing ...
Small-scale testing of micromechanical response of cemented carbides
Cemented carbides are composite materials widely used in different industry fields within applications involving wear, due to their outstanding wear resistance. The most commonly used are WC-Co grades, for Co wettability ...
Development of microcellular conductive foams based on polyetherimide with graphene nanoplatelets
The aim of this dissertation was to develop and investigate novel cellular foams based on polyetherimide (PEI) and carbonbased nanoparticles such as, graphene nanoplatelets (GnP) and carbon nanotubes (CNT), using two main ...
Effect of microstructural and chemical cues on the in vitro cell response to calcium phosphates
Bone has a natural ability to regenerate. However, it cannot bridge large defects without the additional help of a supporting material. Among the different synthetic bone grafts, calcium phosphates (CaPs) are excellent ...
A molecular dynamics study of nanocontact plasticity and dislocation avalanches in FCC and BCC crystals
This study aims to investigate the underlying mechanisms which govern the development of dense defect networks in nanoscale crystal plasticity, either under contact and uniaxial loading conditions, with emphasis on the ...
A study of the rheological properties and injectability of calcium phosphate cements : application to minimally invasive surgical procedures and scaffold fabrication for tissue engineering through rapid prototyping
The present work addresses two different applications enabled by a specific and useful property of calcium phosphate cements (CPCs): injectability. On the one hand minimally invasive procedures involving the use of CPCs ...
Tuning the biological performance of calcium phosphates through microstructural and chemical modifications
Bone is the most transplanted tissue after blood. As pointed out by the World Health Organization, musculoskeletal diseases can potentially rise as the fourth largest cause of disability within the next years. Unfortunately, ...
Mechanical properties of co-doped zirconia ceramics
Tetragonal polycrystalline zirconia, commonly stabilised with 3 mol% yttria (3Y-TZP), became one of the most interesting ceramics for biomedical applications due to its biocompatibility and high mechanical properties. Among ...
Preparation and characterization of nanocomposites based on polylactide manufactured by reactive extrusion-calendering : thermal, rheological, mechanical and fracture properties
PLA nanocomposites sheets that is rnodified with multi-functional epoxide reactive agent (Joncryi4300F, BASF, Germany) were manufacturad using reactive extrusion in a pilot plant. A commercial grade of PLA (PLA 40320, ...
Desarrollo y optimización de recubrimientos HVOF base WC-CoCr para aplicaciones aeronáuticas
Material engineering has always played a defining role in industry by improving materials and tribological properties, increasing lite time use and thus ultimately reducing material costs. Over the last two decades, ...
On the fracture behavior of ductile polymer films : notch quality, essential work of fracture, J-integral, and crack tip opening displacement
Polymers have a wide range of applications. Their ability to be shaped into multiple forms makes it possible to obtain polymer films, which are highly used in industries such as food and pharmaceuticals. Characterization ...
Integración de sensores electroquímicos basados en nanomateriales funcionales para la detección de contaminantes en aguas
The aim of the present thesis is to fabricate, to applicate, and to integrate nanomaterial-based chemical sensors with electrochemical transduction for the detection of water pollutants. This work is divided in 7 Chapters, ...
Characterization of microcellular plastics for weight reduction in automotive interior parts
The present PhD thesis is framed within the Industrial Doctorate Plan promoted by the Generalitat de Catalunya and has been developed in cooperation between the Universitat Politècnica de Catalunya-BarcelonaTech, the Centre ...
Study of the microstructure and mechanical properties of TWIP steels deformed by ECAP
In the current thesis, two TWIP steels with different chemical composition were successfully subjected to Severe Plastic Deformation with Equal Channel Angular Pressing (ECAP) at warm temperature (300°C), using a die with ...
Development of polymeric coatings with combined antifouling/antibacterial properties for titanium dental implants
Titanium dental implants are a commonly used solution for the replacement of lost teeth. Even though the success rate is high, the number of infections related to the placement of the implant is still remarkable and may ...
Surface modification of zirconia-based bioceramics for orthopedic and dental applications
Debido a sus excelentes propiedades mecánicas y una excelente biocompatibilidad, el uso de las cerámicas de base de circona en aplicaciones dentales y ortopédicas ha crecido rápidamente durante las últimas décadas. Sin ...
Functionalized CoCr surfaces with adhesive molecules to improve endothelialization
Cobalt-chromium (CoCr) alloys are widely used as biomaterials for coronary stents due to their excellent mechanical properties, biocompatibility and corrosion resistance. However, these materials are bioinert, retarding ...
