Method for the additive laser-induced production of a main part by means of slip casting

A process for the additive manufacture of a green ceramic body, the process comprising:

• (a) providing a slip formed with particles of a structure-forming ceramic material suspended in a liquid phase,
• (b) wherein the slip does not comprise any organic or inorganic additives which are gelled or crosslinked by thermal or optical methods;
• (c) producing a slip layer;
• (d) directing radiation from a laser light source onto a section of the slip layer, thereby selectively sectionally exposing the slip-layer section to the laser radiation,
• (e) wherein said laser radiation vaporizes liquid phase from the slip-layer section onto which the laser radiation from the laser light source is or has been oriented,
• (f) wherein the vaporization causes an attractive interaction between particles of the structure-forming ceramic material in the slip-layer section to form agglomerations and the agglomerated particles are not resuspended in the liquid phase in the slip-layer section;
• and
• (g) wherein said laser radiation further results in a sinter-free formation of a section of the green ceramic body in the slip layer;
• (h) optionally repeating the steps of producing, directing, vaporizing, and sinter-free formation until the green ceramic body is obtained;
• and
• (i) subsequently separating the non-sintered green ceramic body from the slip.