Staff at Holy Trinity
Alexei Useinov and his unit are used to working with coatings in thousands and hundreds of thousands of times thinner than a human hair
Ultrathin coatings industry in recent years shows significant growth. Today coatings protect from glare and ultraviolet or chips and cracks a wide variety of glass: from automotive and window to the ophthalmic. The roofs of stadiums and bus stops are covered with polycarbonate, which is an order of magnitude softer than glass. Huge area — strengthening coatings for experiencing friction parts of various machinery and cutting tools — such as drill diameter of 50 micrometers (two times thinner
The samples were scanned diamond tip
In addition, ultra-thin coatings are used in the computer industry — for example, in the manufacture of hard disk drives, which are a kind of layered cake: aluminum substrate, a magnetic layer on it to 2 microns to store information, and then — protective diamond film and lubricant — a viscous coating that reduces friction. The thickness of the two layers of the past — is several nanometers.
The project "
Scratch on film termookisla on the surface of silicon deposited with varying load: three-dimensional model, two-dimensional projection and depth chart
The minimum thickness of industrial coatings is now a few nanometers, but the trend is that every two years, becoming thinner coatings. Therefore, the study of their properties is of particular importance.
In TISNCM developed hardware and software package that allows in a single measurement cycle to estimate the maximum number of characteristics of thin coatings, among them — roughness, thickness, hardness, elasticity, fracture toughness, wear resistance,
— As usual it going? The customer brings two dozen samples. They all, at first glance, are the same. But the modes of production are different — the manufacturer of the material parameters vary, trying to achieve the optimal result. And from the measured properties we need to find out which mode is optimal from the point of view of obtaining the desired functional characteristics — says Alexei Useinov, Head of the Research Department of Physics and Mathematical properties TISNCM.
Relief map of the surface and the distribution of its visco-elastic properties are obtained by researchers
Currently the device to scan thin films finally ready to go public acceptance testing. In the future, the developers plan to his master not only Russian, but also the international market.