Additive manufacturing of borosilicate glass via stereolithography
Additive manufacturing of borosilicate glass via stereolithography
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DOI：
10.1016/j.ceramint.2022.01.141
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发表时间：
2022-01
影响因子：
5.2
通讯作者：
Omena Okpowe;V. Drozd;O. Arés-Muzio;N. Pala;Chunlei Wang
中科院分区：
文献类型：
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作者：
Omena Okpowe;V. Drozd;O. Arés-Muzio;N. Pala;Chunlei Wang
最近增材制造工作的激增表明，由于该工艺的高速性和可扩展性，立体光刻技术是一种很有前景的玻璃材料制造技术。然而，很少有人致力于通过立体光刻工艺制造硼硅酸盐玻璃。挑战之一是其相对较低的软化温度可能会干扰热印后工艺并导致保真度差和结构不稳定。在这里，我们报告了通过多步后热处理实现的掺铈（Ce 掺杂）（<10%）和未掺杂硼硅酸盐玻璃的立体光刻制造的首次演示。印刷玻璃的光学特性取决于热处理参数（温度、时间和环境），并且可以针对各种应用轻松调整和优化。印刷的非晶玻璃表现出良好的结构稳定性，8% Ce 掺杂玻璃的带隙为 3 eV，Urbach 能量为 0.75 eV，折射率为 2.14。这些结果表明，通过立体光刻技术制造的掺铈玻璃适用于闪烁体应用，并且增材制造对于硼硅酸盐玻璃的制造具有广阔的前景。
Recent surge in additive manufacturing efforts demonstrate stereolithography as a promising technique for fabricating glass materials due to the high speed and scalability of the process. However, little efforts have been devoted to manufacture borosilicate glass by the stereolithographic process. One of the challenges is that its relatively low softening temperatures could interfere with the thermal post-printing process and introduce poor fidelity and structure instability. Here, we report on the first demonstration of stereolithographic manufacturing of cerium-doped (Ce-doped) (<10%) and undoped borosilicate glass which was enabled by a multi-step post thermal processing. The optical properties of the printed glass depend on thermal processing parameters (temperature, time, and environment) and can be readily tuned and optimized for a wide range of applications. The printed amorphous glass shows good structural stability with band gap of 3 eV, Urbach energy of 0.75 eV and refractive index of 2.14 for 8% Ce-doped glass, respectively. These results indicate Ce-doped glass fabricated by stereolithography is suitable for scintillator applications and that additive manufacturing could be promising for borosilicate glass fabrication.