Tape casting of magnesium oxide.

[摘要] A tape casting procedure for fabricating ceramic magnesium oxide tapes has been developed as a method to produce flat sheets of sintered MgO that are thin and porous. Thickness of single layer tapes is in the range of 200-400 {micro}m with corresponding surface roughness values in the range of 10-20 {micro}m as measured by laser profilometry. Development of the tape casting technique required optimization of pretreatment for the starting magnesium oxide (MgO) powder as well as a detailed study of the casting slurry preparation and subsequent heat treatments for sintering and final tape flattening. Milling time of the ceramic powder, plasticizer, and binder mixture was identified as a primary factor affecting surface morphology of the tapes. In general, longer milling times resulted in green tapes with a noticeably smoother surface. This work demonstrates that meticulous control of the entire tape casting operation is necessary to obtain high-quality MgO tapes.

[发布日期] 2008-02-01

[学科分类] 材料科学（综合）

[关键词] BINDERS;CASTING;CERAMICS;HEAT TREATMENTS;LASERS;MAGNESIUM OXIDES;MILLING;MIXTURES;MORPHOLOGY;OPTIMIZATION;ROUGHNESS;SINTERING;THICKNESS Ceramics-Analysis.;Magnesium oxides.;Casting-Techniques.