Bazan Anna, Turek Paweł, Zakręcki Andrzej
Faculty of Mechanical Engineering and Areonautics, Rzeszów University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland.
MEDIPRINTIC Sp. Z.O.O., Wojska Polskiego 9, 39-300 Mielec, Poland.
Materials (Basel). 2023 Mar 17;16(6):2405. doi: 10.3390/ma16062405.
Additive manufacturing (AM) is a rapidly growing branch of manufacturing techniques used, among others, in the medical industry. New machines and materials and additional processing methods are improved or developed. Due to the dynamic development of post-processing and its relative novelty, it has not yet been widely described in the literature. This study focuses on the surface topography (parameters , , , , , ) of biocompatible polyamide 12 (PA12) samples made by selective laser sintering (SLS) and multi jet fusion (MJF). The surfaces of the samples were modified by commercial methods: four types of smoothing treatments (two mechanical and two chemical), and two antibacterial coatings. The smoothing treatment decreased the values of all analyzed topography parameters. On average, the of the SLS samples was 33% higher than that of the MJF samples. After mechanical treatment, decreased by 42% and after chemical treatment by 80%. The reduction in and is reflected in a higher surface gloss. One antibacterial coating did not significantly modify the surface topography. The other coating had a smoothing effect on the surface. The results of the study can help in the development of manufacturing methodologies for parts made of PA12, e.g., in the medical industry.
增材制造（AM）是制造业技术中一个快速发展的分支，尤其应用于医疗行业。新的机器、材料以及额外的加工方法不断得到改进或开发。由于后处理的动态发展及其相对新颖性，其在文献中尚未得到广泛描述。本研究聚焦于通过选择性激光烧结（SLS）和多喷射熔融（MJF）制造的生物相容性聚酰胺12（PA12）样品的表面形貌（参数 、 、 、 、 、 ）。样品表面通过商业方法进行改性：四种类型的平滑处理（两种机械处理和两种化学处理）以及两种抗菌涂层。平滑处理降低了所有分析的形貌参数值。平均而言，SLS样品的 比MJF样品高33%。机械处理后， 降低了42%，化学处理后降低了80%。 和 的降低反映在表面光泽度更高上。一种抗菌涂层对表面形貌没有显著影响。另一种涂层对表面有平滑作用。该研究结果有助于开发PA12制成的零件的制造方法，例如在医疗行业。
