Tracking the chemical composition of 3D printed 94 % alumina during the thermal post-process

IF 4.7 Q2 ENGINEERING, MANUFACTURING Additive manufacturing letters Pub Date : 2024-07-01 Epub Date: 2024-07-20 DOI:10.1016/j.addlet.2024.100225

Sofia G Gomez , Dale Cillessen , Jonathon Duay , Kevin Strong , Katrina Sadzewicz , Eric MacDonald

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Abstract

Additive manufactured (AM) 94 % alumina was successfully 3D printed using the Lithography Ceramic Manufacturing (LCM) technique. Each 3D printed sample was exposed to a different stage of the thermal post-process to identify changes in chemical composition at each stage. The thermal phases studied were the as printed green state, preconditioning at 120 °C, debinding at 600 °C, debinding at 1100 °C, and sintering at 1650 °C. Fourier Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy, Thermogravimetric Analysis (TGA), and X-Ray Fluorescence (XRF) were used to evaluate the changes in composition at each stage of the thermal post-process. Cross-sectional images of 3D printed alumina samples after thermal exposure were captured using scanning electron microscopy (SEM).

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在热后处理过程中跟踪 3D 打印 94% 氧化铝的化学成分

使用光刻陶瓷制造 (LCM) 技术成功地三维打印出了添加剂制造 (AM) 的 94% 氧化铝。每个三维打印样品都经过了不同阶段的热后处理，以确定每个阶段的化学成分变化。研究的热阶段包括打印时的绿色状态、120 °C的预处理、600 °C的排胶、1100 °C的排胶和1650 °C的烧结。傅立叶变换红外光谱法（FTIR）、拉曼光谱法、热重分析法（TGA）和 X 射线荧光法（XRF）用于评估热后处理各阶段的成分变化。使用扫描电子显微镜（SEM）捕获了热暴露后三维打印氧化铝样品的横截面图像。

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