Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of a Complex-Shaped Silicon Nitride Part with Aligned Whisker Seeds Using LOM Technique

  • Park, Dong-Soo (Ceramic Materials Group, Korea Institute of Machinery and Materials) ;
  • Cho, Byung-Wook (Ceramic Materials Group, Korea Institute of Machinery and Materials)
  • Published : 2003.10.01
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Abstract

A complex-shaped part was successfully fabricated by Laminate Object Manufacturing (LOM) technique using silicon nitride tape with aligned silicon nitride whisker seeds. The ceramic tape was cut using a commercial cutting plotter according to the cross section drafts generated by slicing a 3-D model, and then the tapes were stacked sequentially. In order to improve adhesion between the tapes, stacking was performed under vacuum. After binder burnout, the part was encapsulated using latex emulsion and was cold isostaically pressed under 250 ㎫. It was sintered to 98.5% TD at 2148 K for 4 h under 2 ㎫ nitrogen pressure.

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References

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