Anisotropy in Alumina Processed by SLS.

Alumina powders of 15~m size and 2~m size were processed by SLS using PMMA and a copolymer. The 2~m powders were agglomerated and mixed with the polymer powder before being processed by SLS. SLS bend strength specimens were made with parts built along different orientations. The variation of the strength with incident energy density and with orientation was studied