Universitat Politècnica de Catalunya
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Foam-like aerogels based on biodegradable polymers and sodium montmorillonite (Na+-MMT) clay were prepared through an environmentally friendly freeze-drying process. Both synthesized and bio-based polymers were utilized ...
(English) In this thesis, the ability to refine the grain size of a low carbon steel (deep drawing quality, DDQ) was studied by means of two different techniques of Severe Plastic Deformation (SPD). Firstly, the Repetitive ...
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 ...
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 ...
En este trabajo se estudia la influencia de la microadición conjunta de Nb y V sobre los fenómenos de ablandamiento dinámico y estático durante y trás la deformacion en caliente. En la primera etapa del estudio se realizaron ...
En el presente trabajo se analizan las estructuras celulares de espumas poliméricas inyectadas a través de los métodos de espumación física o química. Como polímero base para el estudio preliminar de moldeo por inyección ...
The metal matrix composites (MMC) are widely used in different applications and offer high strength-to-weight ratio. In this thesis, it was developed a novel method to fabricate composite material in semi-solid state of ...
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 ...
Hardmetal industry is continuously seeking for high-performance products at reduced costs. In addition, it is strongly struggled by the high and volatile prices of raw materials. At this juncture, producers and end-users ...
(English) One of the main goals of the powder metallurgical (PM) industry has been to develop powders that have favourable handling, geometrical and optimal metallurgical properties. Currently, there are two main methods ...
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 ...
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 ...
This dissertation investigates the three-stage method MEAUS (melt-extrusion, annealing, and uniaxial stretching) for producing microporous membranes. This method for membrane preparation is a solvent-free process based on ...
The goal of this research was to determine the relations between processing, structure and properties of polycarbonate-graphene nanoplatelets (PC-GnP) foams. Using two different foaming processes (in one and two steps) ...
Despite being biocompatible and with adequate mechanical properties for application as a bone replacement material, titanium lacks osteoinductive capacity, i.e. it supports new bone growth on its surface but does not foster ...
In this thesis, the microstructure and mechanical properties of bulk samples manufactured with nanocrystalline iron powder are analyzed. This iron powder was obtained by a severe plastic deformation process carried in a ...
Mullite coatings deposited by chemical vapor deposition (CVD) have been introduced and proven as excellent candidates to protect silicon carbide (SiC) from severe pitting corrosion and recession, becoming part of the new ...
The purpose of this PhD thesis was to investigate the sensitivity of the rheological, thermal, mechanical and fracture behaviours on the topological changes induced in two commercial PLA grades. PLA 2002D and PLA 4032D ...
(English) The transition towards to low carbon energy generation is promoting the installation of renewable energy sources, their successful deployment requires efficient energy storage systems in order to meet demand. ...
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 ...
