Accuracy controlling and mechanical behaviors of precursor-derived ceramic SiOC microlattices by projection micro stereolithography (PμSL) 3D printing

立体光刻 陶瓷 材料科学 3D打印 复合材料 数字光处理 结构材料 桁架 纳米技术 结构工程 计算机科学 计算机视觉 工程类 投影机
作者
Ruyue Su,Jing Wang,Shouxin Zhang,Xiong Gao,Wenqing Wang,Ying Li,Rujie He
出处
期刊:Journal of Advanced Ceramics [Springer Nature]
卷期号:12 (11): 2134-2147 被引量:27
标识
DOI:10.26599/jac.2023.9220818
摘要

Precursor-derived SiOC ceramic (PDC-SiOC) microlattices exhibit excellent oxidation resistance, high-temperature stability, as well as superior mechanical properties. However, the printing accuracy of PDC-SiOC microlattices by 3D printing is still limited, and the mechanical properties of PDC-SiOC microlattices have not been studied systematically. Here, PDC-SiOC octet microlattices were fabricated by projection micro stereolithography (PμSL) 3D printing, and photoabsorber (Sudan III) 's effect on accuracy was systematically analyzed. The results showed that the addition of Sudan III improved the printing accuracy significantly. Then the ceramization process of the green body was analyzed in detail. The order of the green body decreased and most of their chemical bonds were broken during pyrolysis. After that, PDC-SiOC microlattices with different truss diameters in the 52-220 μm range were fabricated and their mechanical properties were investigated. The PDC-SiOC microlattices with 52 μm truss diameter exhibited a higher compression strength (31 MPa) than those with bigger truss diameters. The size effect among PDC-SiOC microlattices was analyzed. Our work provides a deeper insight into the manufacturing of PDC-SiOC micro-scaled architectures by 3D printing and paves a path to the research of size effect in ceramic structures.
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