3-D printing of a ceramic component

US11795112B2 · kind B2 · utility

Assignee

• SGL CARBON SE · DE

Inventors

• Oswin Öttinger · Meitingen, DE
• Dominik Rivola · Meitingen, DE
• Stefan Klein · Meitingen, DE
• Andreas Kienzle · Thierhaupten, DE
• Ingrid Kratschmer · Meitingen, DE

Key dates

• Filing date: Nov 24, 2016
• Grant date: Oct 24, 2023
• Expiry date: Nov 23, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2237/62
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for producing the component, and to the use of the component. The method for producing a three-dimensional, ceramic component containing silicon carbide, by a) providing a powdery composition having a grain size (d50) between 3 microns and 500 microns and comprising at least 50 wt % of coke, b) providing a liquid binder, c) depositing a layer of the material provided in a) in a planar manner and locally depositing drops of the material provided in b) onto said layer and repeating step c), the local depositing of the drops in the subsequent repetitions of the step is adapted in accordance with the desired shape of the component to be produced, d) at least partially curing or drying the binder and obtaining a green body having the desired shape of the component, e) carbonising the green body, and f) siliconising the carbonised green body by infiltration with liquid silicon.