Abstract In this research, we report a novel approach to fabricate complex-shaped aluminum nitride (AlN) ceramics via digital light processing (DLP)-based stereolithography. The rheological behaviors, curing kinetics, and mechanical properties were investigated. Compared to unmodified AlN powders, AlN powders modified by stearic acid and oleic acid showed better wettability with resin. The excess cure widths, cure depths, and depth sensitivities of the AlN suspensions with modified powders were decreased. However, their critical energy was increased because of the increased absorbance of the modified AlN powders. Finally, complex-shaped AlN ceramic parts were fabricated by DLP with sintered-body relative densities exceeding 99% of the theoretical density. The flexural strength and hardness of the sintered sample were 398 ± 10.4 MPa and 10.47 ± 0.08 GPa, respectively, indicating prospective applicability in the industry.

中文翻译：

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基于数字光处理的立体光刻技术制备致密氮化铝陶瓷

摘要 在这项研究中，我们报告了一种通过基于数字光处理 (DLP) 的立体光刻技术制造复杂形状的氮化铝 (AlN) 陶瓷的新方法。研究了流变行为、固化动力学和机械性能。与未改性的氮化铝粉相比，硬脂酸和油酸改性的氮化铝粉表现出更好的树脂润湿性。具有改性粉末的 AlN 悬浮液的过量固化宽度、固化深度和深度敏感性降低。然而，由于改性 AlN 粉末的吸光度增加，它们的临界能量增加。最后，通过 DLP 制造复杂形状的 AlN 陶瓷部件，其烧结体相对密度超过理论密度的 99%。烧结试样的弯曲强度和硬度分别为398±10.4MPa和10.47±0。