Researchers have developed a new way to create superhard metals by chemical processing.
To increase the hardness of the metal, such production methods such as forging, rolling, twisting or bending are usually used. Such manipulations lead to a decrease in the size of the grains of the microscopic structure of the material, due to which they are densely compressed. Now the team from Brownovsky University found a way to directly adjust these clusters in bulk slices.
Instead of external physical impact, scientists formed a metal, squeezing individual nanoparticles into a single crystal. This allows you to achieve homogeneous grain sizes for their more dense merge.
However, the problem is that the surface of the metals is usually coated with organic molecules, called ligands that interfere with the interaction of individual nanoparticles. Therefore, for a dense confluence of clusters under a slight pressure, the team cleaned them in a chemical way.
The resulting metals were 2-4 times harder than usual. In addition to a significant increase in density, the researchers did not find significant changes in other properties, they found that other properties, such as electrical conductivity and the reflection of light, were practically no difference from the standard indicators of these metals.
According to scientists, this method can be used for any metal. With it, it is also possible to make metal glass from just one component, not alloy.
Since simple chemical treatment is used in the cleaning process, and the required pressure is in the range of work of standard industrial equipment, the team expects that the technology will soon find widespread in production.
Recall that earlier scientists have developed a new diamond production method, which allows you to create two rare types of heavy-duty material
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