Exploració per autor "Botero Vega, Carlos Alberto"

Ara es mostren els items 1-11 de 11

    • Assessing the viability of high-frequency spot melting for super duplex stainless steel 2507 via electron beam powder bed fusion 

      Roos, Stefan; Barberá Flichi, Francesc; Ortiz Membrado, Laia; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio; Rännar, Lars Erik (Elsevier, 2023-11-01)
      Article
      Accés obert
      This study investigates the use of Electron Beam Powder Bed Fusion (PBF-EB) spot melting on SDSS 2507, a material known for its high tensile strength, corrosion resistance, and welding properties. Spot melting, a localized ...

    • Compositionally-tailored steel-based materials manufactured by electron beam melting using blended pre-alloyed powders 

      Koptyug, Andrey; Popov Jr., Vladimir V.; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio (2020-01-13)
      Article
      Accés obert
      The paper presents the prospects of additive manufacturing (AM) in metal, using the powder bed fusion (PBF) method Electron Beam Melting (EBM) in fabrication specific steel-based alloys for different applications. The ...

    • Daño por contacto en materiales compuestos alúmina/mullita bajo solicitaciones estáticas y cíclicas 

      Botero Vega, Carlos Alberto; Burgos, O.; Jiménez Piqué, Emilio; Moreno, R.; Baudín, Carmen; Llanes Pitarch, Luis Miguel (2010)
      Text en actes de congrés
      Accés obert
      En el presente trabajo se estudia la resistencia frente al daño por contacto de materiales compuestos de alúmina/mullita fabricados mediante el proceso de sintetización reactiva.

    • Determinación de propiedades de interés estructural de materiales de titanato de circonio 

      López López, Emilio; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel; Moreno, Rodrigo; Baudín, Carmen (2009)
      Article
      Accés restringit per política de l'editorial
      El titanato de circonio presenta anisotropía cristalográfica en su coeficiente de expansión térmica, lo que hace que tenga un alto interés como componente de materiales con bajo coeficiente de expansión. Por tanto, los ...

    • Fatigue susceptibility under contact loading of hardmetals coated with ceramic films 

      Llanes Pitarch, Luis Miguel; Tarrés, E.; Ramírez, Giselle; Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio (2010-04)
      Article
      Accés restringit per política de l'editorial
      The contact fatigue behavior of a fine-grained hardmetal coated with two distinct ceramic films, either a TiN monolayer or a WC/C multilayer, is studied by means of indentation testing techniques. Spherical indentation ...

    • Influence of temperature and hot corrosion on the micro-nanomechanical behavior of protective mullite EBCs 

      Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio; Martin, R; Kulkami, Tushar; Sarin, Vinod K.; Llanes Pitarch, Luis Miguel (2015-03-01)
      Article
      Accés obert
      Materials for components installed in the hot section of gas turbines must endure highly aggressive conditions, such as elevated temperatures and corrosive environments. Under these scenarios, CVD mullite coatings enriched ...

    • Mechanical response under contact loads of AlCrN-coated tool materials 

      Yang, Jing; Botero Vega, Carlos Alberto; Cornu, Nicolas; Ramírez Sandoval, Giselle; Mestra Rodríguez, Álvaro Miguel; Llanes Pitarch, Luis Miguel (Institute Of Physics Publishing Ltd, 2014)
      Text en actes de congrés
      Accés obert
      The mechanical behavior under contact loading of systems consisting of PVD AlCrN film deposited onto two distinct hard substrates - cemented carbides and tool steel is studied by means of indentation testing techniques, ...

    • Micro and nanomecanical behavior of mullite-based environmental barrier coatings 

      Botero Vega, Carlos Alberto (Universitat Politècnica de Catalunya, 2012-12-14)
      Tesi
      Accés obert
      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 ...

    • Nanoindentación de compuestos de alúmina-10 vol. % titanato de aluminio 

      Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio; Salán Ballesteros, Maria Núria; Baudín, Carmen; Llanes Pitarch, Luis Miguel (2009)
      Article
      Accés restringit per política de l'editorial
      En el presente trabajo se han estudiado, mediante la técnica de nanoindentación, las propiedades mecánicas de compuestos de alúmina-titanato de aluminio, Al2O3 + 5vol. % y +10 vol. % Al2TiO5, sinterizados bajo tres condiciones ...

    • Nanoindentation and nanoscratch properties of mullite-based environmental barrier coatings: Influence of chemical composition - Al/Si ratio 

      Botero Vega, Carlos Alberto; Jiménez Piqué, Emilio; Martin, R; Kulkarni, Tushar; Sarin, Vinod K.; Llanes Pitarch, Luis Miguel (2014-01-25)
      Article
      Accés restringit per política de l'editorial
      The mechanical properties and structural integrity of mullite (3Al2O3·2SiO2) environmental barrier coatings (EBCs) are key factors towards the implementation of these systems in real applications. By using chemical vapor ...

    • Nanoscratch testing of 3Al2O3·2SiO2 EBCs: assessment of induced damage and estimation of adhesion strength 

      Botero Vega, Carlos Alberto; Cabezas i Peñalva, Laura; Sarin, Vinod Kumar; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (2023-03-01)
      Article
      Accés obert
      n this study, the structural integrity of mullite (3Al2O3·2SiO2) films, deposited on silicon carbide (SiC) substrates using chemical vapor deposition (CVD), was investigated via increasing load nanoscratch tests. The films ...