Laser sintering of complex-shaped ceramic prototypes

The process consisting of Selective Laser Sintering and posttreatment is an efficient and successful technique for the fast and direct prodn. of complex-shaped ceramic prototypes. Parts with complicated interior structures, filigree sections, undercuts and free-form surface areas can be produced. Coupling of material-oriented and tech. process modules has enabled the laser-sintering technol. to become viable for industrial application using ceramic powders such as silicon carbide. This paper presents the optimized sintering and infiltration steps of the manufg. process. Properties of laser-sintered parts made of SiSiC are discussed in comparison with those made using traditional sintering techniques. In conclusion recommendations for the practical use of the technique are given.