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Evaluation of Stereolithography-Based Additive Manufacturing Technology for $BaTiO_{3}$ Ceramics at 465 nm
| Content Provider | MDPI |
|---|---|
| Author | Chugunov, Svyatoslav Smirnov, Andrey Kholodkova, Anastasia Tikhonov, Andrey Dubinin, Oleg Shishkovsky, Igor |
| Copyright Year | 2022 |
| Description | A piezoceramic $BaTiO_{3}$ material that is difficult for 3D printing was tested with a homemade laser-based stereolithography (SLA) setup. The high light absorbance of $BaTiO_{3}$ in the spectral range of 350–410 nm makes this material hardly usable with most commercial SLA 3D printers. The typical polymerization depth of $BaTiO_{3}$ ceramic pastes in this spectral range hardly reaches 30–50 µm for 40 vol % powder loading. A spectral change to 465 nm was realized in this work via a robot-based experimental SLA setup to improve the 3D printing efficiency. The ceramic paste was prepared from a preconditioned commercial $BaTiO_{3}$ powder and used for 3D printing. The paste’s polymerization was investigated with variation of powder fraction (10–55 vol %), speed of a laser beam (1–10 mm/s, at constant laser power), and a hatching spacing (100–1000 µm). The polymerization depths of over 100 µm were routinely reached with the 465 nm SLA for pastes having 55 vol % powder loading. The spectral shift from 350–410 nm spectral region to 465 nm reduced the light absorption by $BaTiO_{3}$ and remedied the photopolymerization process, emphasizing the importance of comprehensive optical analysis of prospective powders in SLA technology. Two multi-layered objects were 3D-printed to demonstrate the positive effect of the spectral shift. |
| Starting Page | 412 |
| e-ISSN | 20763417 |
| DOI | 10.3390/app12010412 |
| Journal | Applied Sciences |
| Issue Number | 1 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-01 |
| Access Restriction | Open |
| Subject Keyword | Applied Sciences Manufacturing Engineering Batio3 3d Printing Stereolithography Sla Lead-free Piezoceramics |
| Content Type | Text |
| Resource Type | Article |
