Production of alumina microparts by powder injection molding Articles uri icon

publication date

  • May 2011

start page

  • 617

end page

  • 626


  • 3


  • 8

International Standard Serial Number (ISSN)

  • 1546-542X

Electronic International Standard Serial Number (EISSN)

  • 1744-7402


  • In this experimental work, injection molding of alumina using a binder system based on high-density polyethylene and paraffin wax was performed to produce dental brackets. The use of a microinjection molding
    machine, permitting a careful control of the volume injected into the
    microcavity, allowed to produce dental brackets with complex shape and
    high aspect ratio. The organic component was removed by a combination of
    solvent and thermal debinding. After sintering at 1600°C, the final
    parts retained the green-part shape, with high surface finish. The
    density achieved (99.8%) was higher than that for similar parts obtained
    by uniaxial compaction.