An innovative coating that can be used in aviation, automotive and medicine has been developed at Togliatti State University. It slows down the dissolution of implants, the university's press service reported.
Using plasma electrolytic oxidation technology, a biocompatible coating was created on bioresorbable medical magnesium. This slowed the rate of implant dissolution threefold. This coating may be useful when using thin structures for osteosynthesis.
Magnesium alloys are in demand not only in medicine, but also in the rocket and space, aerospace and automotive industries.
Their use in the production of unmanned aerial systems <…>, as well as in the production of small motor vehicles for national economic consumption, could be particularly promising.
During PEO, the oxide layer increases both inside and outside, forming a porous ceramic base. Various materials, such as nanoparticles and organic compounds, can be incorporated into it, both during and after the plasma electrolytic oxidation process. They can also be added to the electrolyte used for PEO, which allows the use of hybrid technologies. After the ceramic layer is formed, it can be further processed to improve existing properties or impart new required characteristics, which refers to combined technology.
Project Manager Mikhail Krishtal said that with the help of hybrid and combined technologies based on PEO, it is possible to create a coating with the desired properties. It will be durable, wear-resistant and biocompatible.
And, most importantly, we can control these properties, changing them in different parts of the product. In turn, during operation, the formed layers will reveal the properties embedded in them exactly where it is needed, and exactly when it is needed. Such "coatings" can be classified as multifunctional and adaptive, that is, as "smart" (smart-coating).
Earlier, scientists from Samara University named after Korolev created a prototype of a plasma coating for rocket and aircraft engines. It resembles chain mail made of thin disc-shaped scales, each of which is thinner than 0.5 mm.
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