Exploració per tema "Synchrotron radiation"

Ara es mostren els items 16-18 de 18

    • Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses 

      Panahi, Seyedeh Leila; Fornell, Jordina; Popescu, Catalin; Pineda Soler, Eloi; Sort Viñas, Jordi; Bruna Escuer, Pere (2022-02)
      Article
      Accés obert
      New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the ...

    • Synchrotron radiation studies on even-odd and odd-even nylons 

      Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Ricart López, Albert; Morales Gámez, Laura Teresa; Soto, David (IOP PUBLISHING LTD., 2009-09-08)
      Article
      Accés obert
      Aliphatic polyamides derived from odd diamine or odd dicarboxylic acid units cannot adopt a conventional sheet structure when molecular chains have an all trans conformation. However, typical fiber diffraction patterns of ...

    • Thermally induced structural transitions of nylon 4 9 as a new example of even-odd polyamides 

      Olmo Osuna, Cristian; Casas Becerra, María Teresa; Martínez Guil, Juan Carlos; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2018-02-16)
      Article
      Accés obert
      Crystalline morphology and structure of nylon 4 9 have been studied by means of optical and transmission electron microscopies, and X-ray diffraction. Rhombic crystals were characteristic of crystallization from glycerin ...