Employees from the High Energy Special Materials Research Laboratory and the Metallurgical Nanotechnology Laboratory of the School of Physics and Technology, Tianjin University have developed a new technology to produce raw materials using ceramics and metal powders. The cost of such products does not exceed the import of similar products, and the performance of their products exceeds that of products made directly from alloys.
Scientists at Tomsk State University describe the technology developed in scientific articles published in Metals (Q1), Powder Technology (Q1), and other scientific publications. The raw material is a granular material, a mixture of fine metal or ceramic powder and polymer binder. PIM technology (Powder Injection Molding) - Production of parts from powder materials by injection molding - is one of the most common techniques for producing parts for various engineering branches. It includes MIM technology ( metal injection molding ) - injection molding of powder metals and alloys and CIM technology (ceramic injection molding) - injection molding of ceramic powders.
A technical developer said that PIM technology is simple and cheap, so it is the most popular method of manufacturing plastic products, which allows you to obtain high-precision products at low cost; Maxim Krinitsyn is an employee of TSU’s innovation program and scientific management project department, however, there are only 2-3 companies in the world engaged in the combination of polymers and metals to make raw materials. Since 2021, TSU scientists have been developing their own raw material production technologies that use metal and ceramic powders. The developer plans to expand the range of raw materials and launch new compositions without analogues in the world.
"This is a more complex technique that requires additional steps. We add particles of various metals, ceramics, their mixtures or composites so that when the output is obtained, it is not a polymer product, but a metal product," the researchers explained. — German BASF is a global monopoly , a global monopoly company for raw materials production. In Russia, its Catamold raw materials meet almost all demands – most of the polymer products are made with it, but the company has recently stopped delivering. Our materials can replace it, and the products made from them are of no less quality than their imported counterparts. In addition, raw materials can not only be used in injection molding , but also in 3D printing technology, for example. "
" This is a bimodal powder with nano and microparticles," said Maxim Krinitsyn. "We have determined that the strength of the material and its oxidation resistance depend on the size of the powder particles and have determined the optimal particle size that provides the best performance. As a result, the alloy is formed from a multicomponent powder and the performance of the product is better than that of the product made of the alloy. Additionally, getting materials from raw materials allows you to control the phase content in the material due to the ability to change the sintering mode. ”
The author of the technology is Marat Lerner, principal investigator of the TSU Metallurgical Nanotechnology Laboratory. More than 10 employees of the Metallurgical Nanotechnology Laboratory and the High Energy Special Materials Laboratory of High-Energy Special Materials Laboratory are underway for the project. The technology is developed within the framework of the Russian Science Foundation and the project supported by the 2030 Priority Program.
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