Lesz Sabina, Karolus Małgorzata, Gabryś Adrian, Kremzer Marek
Department of Engineering Materials and Biomaterials, Silesian University of Technology, 18a Konarskiego St., 44-100 Gliwice, Poland.
Institute of Materials Engineering, University of Silesia, 1a 75 Pułku Piechoty St., 41-500 Chorzów, Poland.
Materials (Basel). 2022 Oct 20;15(20):7333. doi: 10.3390/ma15207333.
Magnesium-based alloys are widely used in the construction of automotive, aviation, and medical applications. The solutions presently used for the production of biodegradable materials are characterized by considerable energy consumption and limitations resulting from the use of different devices and technologies. The proposed material is easier to manufacture due to mechanical alloying (MA). Thanks to the MA process, it is possible to carefully tailor the desired chemical composition and microstructure. There are many parameters that can be modified during synthesis in order to obtain an alloy with the desired microstructure and specific expected alloy properties. The duration of grinding of the alloy, the size and number of balls, and the protective atmosphere have a great influence on the process of mechanical alloying and the properties of the obtained products. So, the aim of this work was to determine the influence of milling time on the phase composition and structure of Mg-based alloy synthesis products. The tested samples were milled for 5, 8, 13, 20, 30, 50, and 70 h. X-ray diffraction analysis (XRD) and scanning electron microscopy studies (SEM) with energy-dispersive spectroscopy (EDS) were performed to obtain the powder morphology and chemical composition of MgZnCaAg (where x = 1, 2) powders. Structure characterization based on the Rietveld refinement and crystallite size determination based on the Williamson-Hall theory of milling products were also carried out.
镁基合金广泛应用于汽车、航空和医疗应用领域的构造。目前用于生产可生物降解材料的解决方案具有相当高的能源消耗，并且因使用不同的设备和技术而存在局限性。由于机械合金化（MA），所提出的材料更易于制造。得益于机械合金化工艺，可以精心定制所需的化学成分和微观结构。在合成过程中有许多参数可以修改，以便获得具有所需微观结构和特定预期合金性能的合金。合金的研磨时间、球的尺寸和数量以及保护气氛对机械合金化过程和所得产品的性能有很大影响。因此，这项工作的目的是确定研磨时间对镁基合金合成产物的相组成和结构的影响。对测试样品进行了5、8、13、20、30、50和70小时的研磨。进行了X射线衍射分析（XRD）以及带有能量色散光谱（EDS）的扫描电子显微镜研究（SEM），以获得MgZnCaAg（其中x = 1, 2）粉末的粉末形态和化学成分。还基于Rietveld精修进行了结构表征，并基于研磨产物的威廉姆森 - 霍尔理论确定了微晶尺寸。
