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Industry New Knowledge | The effect of the solid content of light-cured DLP 3D printing titanium titanate piezoelectric ceramics on the anisotropy of materials.
Author:
Adventure Technology
Industry new knowledge
Recently, Yan Chen's team from the State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment of Guangdong University of Technology published the research on the titanate piezoelectric ceramics of barium printed the anisotropy for 3D in the Ceramics International,Effect of adjusting solid content on anisotropy of DLP 3D printed barium titanate piezoelectric ceramics.
Original link: https://doi.org/10.1016/j.ceramint. 2024.09.414
Adventure Technology official website: http://www.adventuretech.cn/
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research content
Piezoelectric ceramics are widely used in many products, but the traditional preparation technology has limitations in the manufacture of complex shapes and micro-size ceramics. in 3D printing technologyDigital Light Processing (DLP)Due to the high structural resolution, it is promising, but the anisotropy of printed ceramics may affect its performance due to the layered structure, and there are few reports on the anisotropy of electrical and mechanical properties of 3D printed piezoelectric ceramics. Therefore, this study prepared different solid content by DLP method.Barium Titanate Square (BTO)Piezoelectric ceramics, study the difference between the vertical and horizontal directions.
1, a photograph of a printed BTO green body (a), a photograph of a sintered BTO ceramic sample (B), and a cut drawing of BTO ceramic (c).
Figure 2, Slurry characteristics (a) Depth of curve at different exposure times at 1820 μW/cm2 exposure energy intensity, (B) Slurry viscosity.
△ Fig. 3, structure diagram and photos of pulse echo detection system (a ~ B) and integrated longitudinal and transverse wave probe (c ~ d).
△ Figure 4, Cross-sectional SEM micrographs:(a) (B) (c) green, (d) (e) (f) vertical samples and (g) (h) (I) horizontal samples with different solids contents:(a) (d) (g) 75 wt%,(B) (e) (h) 80 wt%,(c) (f) (I) 85 wt%.
5, XRD patterns of printed BTO ceramics with different solid contents in vertical and horizontal directions.
△ Figure 6, the temperature dependence of the dielectric properties of vertical and horizontal BTO ceramics with different solid contents (a)75 wt%,(B) 80% wt%,(c)85 wt%.
△ Figure 7. Polarization-electric field hysteresis loop for vertical and horizontal samples with different solid contents at 50 kV/cm:(a)75 wt%,(B) 80 wt%,(c)85 wt%.
Conclusion
By DLP 3D printing BTO piezoelectric ceramics, the performance difference of BTO ceramics with different solid content in vertical and horizontal directions was studied.The results show that the microstructure and electrical properties are improved first and then decreased with the increase of solid content, and the performance is good when the solid content is 80%. BTO ceramics with 80% solid content have little difference in vertical and horizontal directions, and have good piezoelectric, dielectric, ferroelectric and mechanical properties.Appropriate solid content can improve the performance of printed ceramics and reduce the difference between vertical and horizontal directions, which has potential in complex shape and multi-mode sensor applications.
△ The figure is usedOur equipment printingPhotos of PZT piezoelectric ceramics with different particle sizes, green body, after glue removal and after sintering (from top to bottom)
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