1
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Injection Molding and Near-Complete Densification of Monolithic and Al 2O 3 Fiber-Reinforced Ti 2AlC MAX Phase Composites

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Near-net shape components composed of monolithic Ti 2AlC and composites thereof, containing up to 20 vol.% Al 2O 3 fibers, were fabricated by powder injection molding. Fibers were homogeneously dispersed and preferentially oriented, due to flow constriction and shear-induced velocity gradients. After a two-stage debinding procedure, the injection-molded parts were sintered by pressureless sintering at 1250 °C and 1400 °C under argon, leading to relative densities of up to 70% and 92%, respectively. In order to achieve near-complete densification, field assisted sintering technology/spark plasma sintering in a graphite powder bed was used, yielding final relative densities of up to 98.6% and 97.2% for monolithic and composite parts, respectively. While the monolithic parts shrank isotropically, composite assemblies underwent anisotropic densification due to constrained sintering, on account of the ceramic fibers and their specific orientation. No significant increase, either in hardness or in toughness, upon the incorporation of Al 2O 3 fibers was observed. The 20 vol.% Al 2O 3 fiber-reinforced specimen accommodated deformation by producing neat and well-defined pyramidal indents at every load up to a 30 kgf (~294 N).

          Related collections

          Most cited references 55

          • Record: found
          • Abstract: not found
          • Article: not found

          Layered machinable ceramics for high temperature applications

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Processing and characterization of Ti2AlC, Ti2AlN, and Ti2AlC0.5N0.5

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Orientation, distribution, and deposition of elongated, inertial fibers in turbulent channel flow

                Bookmark

                Author and article information

                Contributors
                Role: Academic Editor
                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                29 June 2021
                July 2021
                : 14
                : 13
                Affiliations
                [1 ]Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany; r.gabriel@ 123456fz-juelich.de (R.G.); d.sebold@ 123456fz-juelich.de (D.S.); r.vassen@ 123456fz-juelich.de (R.V.); o.guillon@ 123456fz-juelich.de (O.G.); j.gonzalez@ 123456fz-juelich.de (J.G.-J.)
                [2 ]Department of Ceramics and Refractory Materials, Institute of Mineral Engineering, RWTH Aachen University, 52064 Aachen, Germany
                [3 ]Jülich Aachen Research Alliance, JARA-Energy, 52425 Jülich, Germany
                Author notes
                [* ]Correspondence: s.badie@ 123456fz-juelich.de
                Article
                materials-14-03632
                10.3390/ma14133632
                8269708
                34209721
                47bc1175-3668-4da8-be67-5baab8e016a3
                © 2021 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https://creativecommons.org/licenses/by/4.0/).

                Categories
                Article

                Comments

                Comment on this article