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    Jornadas CeFEMA 2019

    16–17 Sept 2019
    Instituto Superior Tecnico, Campus Alameda
    Europe/Lisbon timezone

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    Session

    Materials Processing

    17 Sept 2019, 09:35
    Anfiteatro Abreu Faro (Instituto Superior Tecnico, Campus Alameda)

    Anfiteatro Abreu Faro

    Instituto Superior Tecnico, Campus Alameda

    Conveners

    Materials Processing

    • Célio Pina

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    1. 18. The influence of glaze on the tribological properties of zirconia dental pieces obtained by subtractive and additive manufacturing
      Ana Catarina Branco
      17/09/2019, 09:35

      Ceramic based prosthetic materials are highly used for the repairing/replacing of a damaged/missing tooth, due to their suitable mechanical and aesthetic properties, chemical stability and biocompatibility. Additive manufacturing (AM) has emerged as new methodology to obtain long term 3D dental pieces at low cost, decreasing the materials’ waste and production time relatively to the...

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    2. 21. On the wear behaviour of LASER clad Colmonoy-6 coatings under corrosive media
      Ivan Rodrigues
      17/09/2019, 09:50

      The process of laser cladding using Ni-Cr-B-Si-C alloy powders has gained relevance as a method to produce hardfacing coatings that provide excellent surface wear and corrosion resistance in a corrosive environment. However, under chemically aggressive media, the wear performance of such coatings is dependent on the synergic interaction between mechanical wear and electrochemical corrosion...

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    3. 19. Ageing of single crystalline laser deposited René N4 nickel superalloy
      José Cardoso
      17/09/2019, 10:05

      The outstanding creep and thermal fatigue resistance of the high-temperature alloys used in the hot section of gas turbine engines for the aerospace and energy production industries are ensured by a single-crystalline structure and a microstructure composed of cuboidal γ' phase precipitates densely distributed in a γ phase matrix, which is generated during a complex ageing treatment. This...

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    4. 20. Influence of laser surface nanotexturing on the friction of silicon in dry sliding conditions
      Isabel Alves Lopes
      17/09/2019, 10:20

      The aim of the present work was to understand the role of Laser-Induced Periodic Surface Structures (LIPSS) on the friction behavior of silicon. A uniform LIPSS texture was generated on Si using femtosecond pulsed laser radiation. The wear tests were performed using a reciprocating ball-on-flat nanotribometer in dry sliding conditions and using polytetrafluoroethylene (PTFE) as counterbody....

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