Methods for manufacturing ceramic parts using microwave sintering
AssigneeVita Zahnfabrik H. Rauter GmbH & Co. KG
InventorsMarc Stephan, Markus Vollmann, Norbert Thiel
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Abstract
A method for manufacturing ceramic parts with a certain porosity by sintering using microwaves, the materials to be sintered being arranged in a vessel, wherein the microwaves introduce sintering energy into the materials to be sintered via electromagnetic waves in the range of vacuum wavelengths between 5 cm-20 cm in multimode having an electromagnetic power of up to one kilowatt, and besides being built from primary materials for the structure of the vessel, the vessel is built from a secondary material which comprises, in particular, a mixture of or mixed crystals of non-metallic, para-, ferro- or antiferromagnetic materials.
Claims10
Method for manufacturing ceramic parts with a certain porosity by sintering using microwaves, the materials to be sintered being arranged in a vessel, said method comprising:
- assembling a bottom element, an intermediate element, and a top element to define a receiving portion, the bottom, intermediate, and top elements being formed from a primary material;
- introducing a secondary material into an annular recess of the intermediate element so that the secondary material is surrounded by the primary material, the annular recess surrounding the receiving portion, wherein the secondary material comprises at least one material selected from the group consisting of:
- non-metallic materials, para-magnetic materials, ferro-magnetic materials and antiferromagnetic materials;
- introducing the materials to be sintered into the receiving portion;
- and
- introducing microwave sintering energy into the materials to be sintered via electromagnetic waves in the range of vacuum wavelengths between 5 cm-20 cm in multimode having an electromagnetic power of up to one kilowatt.
Dependencies are inferred from the claim text.