Abstract Based on previously established process conditions, we successfully selectively laser melted and characterised the properties of alumina-spodumene composite. Additively manufacturing sample parts of this composite using various layer thicknesses revealed different printing defects. For example, at layer thickness of 50 µm, we observed delamination of the part from the substrate plate. Poor interlayer bonding, however, was found when the layer thicknesses used were 100 µm and 150 µm. With the addition of alumina, the flexural strength of the samples doubled. It was also found that heat treating the composite has negligible effect on the properties. Additionally, compared to using large layer thicknesses, printing with 50 µm layer thickness produced parts with the lowest amount of porosities. Furthermore, x-ray diffraction analysis detected crystallinity in the as-printed samples due to the addition of alumina particles and crystallisation from constant heat input. This article shows that selective laser melting of ceramic-glass-ceramic composite is possible.

中文翻译：

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选择性激光熔融氧化铝-锂辉石复合材料的性能

摘要 基于先前建立的工艺条件，我们成功地选择性地激光熔化并表征了氧化铝-锂辉石复合材料的性能。使用不同层厚度增材制造这种复合材料的样品部件显示出不同的印刷缺陷。例如，在 50 µm 的层厚下，我们观察到零件从基板上分层。然而，当使用的层厚度为 100 µm 和 150 µm 时，发现层间结合较差。随着氧化铝的加入，样品的抗弯强度增加了一倍。还发现对复合材料进行热处理对性能的影响可以忽略不计。此外，与使用大层厚度相比，使用 50 µm 层厚度进行打印所生产的零件孔隙率最低。此外，X 射线衍射分析检测到打印样品中的结晶度，这是由于氧化铝颗粒的添加和恒定热量输入导致的结晶。本文表明陶瓷-玻璃-陶瓷复合材料的选择性激光熔化是可能的。