Abstract Binder jetting is a promising additive manufacturing process to fabricate a wide range of materials, including ceramics. The objective of this research is to investigate the effects of particle size on flowability and sinterability of the feedstock powder and resultant properties of fabricated parts. A commercial ceramic composite powder was sieved into three different particle size ranges: designated as fine, medium, and coarse powders, respectively. Flowability and sinterability measurements were performed on the sieved powders. After printing and sintering, the density of samples was measured with the Archimedes’ method. Compressive tests were performed to investigate the mechanical properties of the fabricated parts. The experimental results showed that flowability increased but sinterability decreased as particle size increased. The printed and sintered density was dependent on both flowability and sinterability: the highest density was achieved by the medium powder due to the balance between flowability and sinterability. The compressive strength was dominated by sinterability: the highest strength was achieved by the fine powder because of the highest sinterability.

中文翻译：

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陶瓷粘合剂喷射增材制造：粒度对原料粉末和最终部件性能的影响

摘要 粘合剂喷射是一种很有前景的增材制造工艺，可用于制造包括陶瓷在内的多种材料。本研究的目的是研究粒度对原料粉末的流动性和烧结性的影响，以及由此产生的零件性能。将商业陶瓷复合粉末筛分为三个不同的粒度范围：分别指定为细粉、中粉和粗粉。对过筛的粉末进行流动性和烧结性测量。印刷和烧结后，用阿基米德方法测量样品的密度。进行压缩试验以研究制造部件的机械性能。实验结果表明，随着粒径的增加，流动性增加，但烧结性降低。印刷和烧结密度取决于流动性和烧结性：由于流动性和烧结性之间的平衡，介质粉末达到了最高密度。抗压强度由可烧结性决定：由于最高的可烧结性，细粉达到了最高强度。