Three-dimensional printing of blue-colored zirconia accessories using digital light processing-based stereolithography. Issue 2 (3rd April 2021)

• Record Type: Journal Article
• Authors: Li, Yanhui; Wang, Shengliang; Wang, Minglang; Zhang, Xinyue; Lu, Binwen; Wang, Yueliang; Dong, Dongdong; He, Fupo; Liu, Wei; Wu, Shanghua
• Is Part Of: Journal of Asian ceramic societies. Volume 9:Issue 2(2021)
• Page Start: 727
• Page End: 732
• Publication Date: 2021-04-03
• Subjects: 3Y-TZP -- blue-colored -- cure depth -- digital light processing; Ceramics -- East Asia -- Periodicals; Materials science -- Periodicals; 620.1405
• DOI: 10.1080/21870764.2021.1913912
• Languages: English
• ISSNs: 2187-0764

Abstract

ABSTRACT: Digital light processing (DLP) based stereolithography opens new possibilities for fabricating ceramic accessories with complex structures. The cure depth is a critical criterion for analyzing the production efficiency of ceramic accessories. As predicted using the absorption model, the absorbance from the photoinitiator and dye has a direct effect on the cure depth. In this study, blue-colored powder composed of 3 mol% yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) and CoAl2 O4 powder was prepared through ball-milling. The cure depth of a single layer exposed to varying energy levels was measured, and the values of the depth sensitivity Sd and critical energy Ec were also calculated. The results showed that the absorbance of blue-colored 3Y-TZP powder increased with CoAl2 O4 content, which increased the critical energy Ec and depth sensitivity reciprocal 1/Sd . Compared with the pure 3Y-TZP, the cure depth decreased, which was attributable to the absorbance of CoAl2 O4 . In addition, blue-colored accessories were fabricated using the DLP method, and the microstructures of the accessories were characterized through scanning electron microscopy.