В роботі досліджено мікротвердість і морфологію поверхні наноструктур (Co41Fe39B20)х (SiO2)100 - х з різним процентним вмістом металевої фази в діелектричній матриці. Виявлено, що залежності мікротвердості та середньоквадратичного відхилення по профілю від концентрації мають немонотонний характер (яскраво виражений мінімум) при величині х = 56 %.
Це значення х близьке до порогу перколяції у вказаній наноструктурі.
This paper describes the results of the nanostructures (Co41Fe39B20)х (SiO2)100 - х research. Percentage of metal phase in the dielectric matrix was x = 19, 33, 41, 56 and 100 %. These nanostructures were investigated applying atomic force microscopy. Surface morphology was detected with spatial resolution, which was defined by curvature of cantilever needle (30 nm). Measurements were conducted in semicontact mode, in which cantilever console was oscillated with a frequency of hundreds of kilohertz.
Microhardness HV of nanocomposites was measured by standard Vickers hardness test, which includes indenter indentation in the form of four-sided diamond pyramid with a 1360 angle at the top. Load on the indenter was 0.5 N and 2.0 N. The accuracy of microhardness measurement experiment was 15%.
The microgeometry parameters of the surface &and of the microhardness of the nanostructures nonmonotonously depend on the composition of metal phase. On the curves we can see the minimum which corresponds nanocomposite х = 56 %. This value x is close to the percolation threshold in the tested n&anostructure.
