Classification of 3D ceramic printing technology
Currently, there are five main 3D ceramic printing and moulding technologies available worldwide: IJP, FDM, LOM, SLS and SLA. Using these technologies, the printed ceramic bodies are sintered at high temperatures to produce ceramic parts.
Each printing technology has its own advantages and disadvantages, and the level of development varies according to the method of forming and the raw materials used.
Originally developed by MIT, 3D ceramic printing starts by laying powder on a table and spraying a binder through a nozzle onto a selected area to bond the powder together and form the first layer, then the table is lowered, filled with powder and the process is repeated until the whole part is made.
The binders used are silicone and polymer binders. The 3D printing method allows easy control of the composition and microstructure of the ceramic blanks, but the blanks require post-processing and have low precision and strength.
The inkjet deposition method, developed by Evans and Edirisingle’s team at Brunel University in the UK, involves depositing a suspension containing nanoceramic powders directly from a nozzle to form a ceramic blank. The materials used are ZrO2, TiO2, Al2O3, etc. The disadvantages are the ceramic ink configuration and print head clogging problems.
(3D ceramic printed products can look like the real thing)
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Post time: Sep-14-2021