Mironovs Viktors, Usherenko Yulia, Boiko Irina, Kuzmina Jekaterina
Scientific Laboratory of Powder Materials, Faculty of Mechanical Engineering, Transport and Aeronautics, Riga Technical University, 6A Kipsalas Str., Lab. 319, LV-1048 Riga, Latvia.
Institute of Mechanics and Mechanical Engineering, Faculty of Mechanical Engineering, Transport and Aeronautics, Riga Technical University, 6B Kipsalas Str., Room 406, LV-1048 Riga, Latvia.
Materials (Basel). 2022 Apr 29;15(9):3207. doi: 10.3390/ma15093207.
High strength fibres of carbon, boron, silicon carbide, tungsten, and other materials are widely used to reinforce metal matrix composite materials. Carbon and boron fibers are usually used to reinforce light alloys based on aluminum and magnesium. Products made from these materials are characterized by high strength and rigidity and can be used for a long time. Technological waste containing such fibres are hazardous to the environment because they are durable and have needle-like and other sharp shapes. Therefore, they must be disposed of with extreme care. A significant incentive for the processing and reuse of waste composites of this type is the relatively high cost of production of the primary fibre and the material as a whole. With the increase in the production of such materials in recent years, the need to recycle composite waste is becoming increasingly important. Three main options for primary processing are used to prepare composites for their subsequent use. They are mechanical, thermal, and chemical grinding technologies. One of the actual and practical areas of processing technology is the method of powder metallurgy. This paper presents the main stages of processing composite materials based on an aluminium matrix and B-W fibres to obtain powder compositions. The results of the studies showing the possibility of the effective use of the obtained crushed waste to manufacture concrete products and the production of cutting and grinding tools are presented.
碳、硼、碳化硅、钨等高强度纤维以及其他材料被广泛用于增强金属基复合材料。碳和硼纤维通常用于增强以铝和镁为基础的轻合金。由这些材料制成的产品具有高强度和高刚性的特点，并且可以长期使用。含有此类纤维的工艺废料对环境有害，因为它们耐用且呈针状及其他尖锐形状。因此，必须极其小心地处理它们。对这类废弃复合材料进行加工和再利用的一个重要诱因是原生纤维及整个材料的生产成本相对较高。近年来，随着此类材料产量的增加，回收复合废料的需求变得越来越重要。初级加工主要有三种选择，用于为复合材料的后续使用做准备。它们是机械、热和化学研磨技术。粉末冶金方法是加工技术中一个实际且实用的领域。本文介绍了基于铝基和B-W纤维的复合材料加工以获得粉末组合物的主要阶段。展示了有效利用所得破碎废料制造混凝土产品以及生产切削和磨削工具的研究结果。
