Pressureless sintering of a gelcast alumina ceramic

Bodur C.

25th Annual Conference on Composites, Advanced Ceramics, Materials and Structures, Florida, United States Of America, 21 - 27 January 2001, vol.22, pp.75-82 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 22
  • City: Florida
  • Country: United States Of America
  • Page Numbers: pp.75-82
  • Istanbul Technical University Affiliated: No


In this work pressureless sintering of a MgO doped alumina ceramic was investigated. Green alumina parts were made by gelcasting. Sintering was done at 1600degreesC in air for times 1 h, 3 h and 6 h. Sintered materials were investigated by scanning electron microscope (SEM) for microstructural characterization. From the results of the density measurements; it was observed that the pressureless sintering for 1 h in an alumina furnace resulted in almost the full densification of this material. Materials, sintered for 3 h and 6 h in a furnace with graphite heating element, did not achieve the full densification. Microhardness measurements were done on the sintered materials for mechanical characterization.