期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2017
卷号：2
期号：11
页码：21-27
DOI：10.15587/1729-4061.2017.97343
语种：English
出版社：PC Technology Center
摘要：The study of the damping in the elastic vibration energy was conducted on the samples of steel Cr18Ni9Ti and 12Cr18Ni10Ti shaped as a solid rod and a capillary, respectively. Plasma coatings based on NiА1–SiO2·Al2O3 were researched in broad temperature and deformation ranges. The research has proved an essential influence of plasma nanostructured coatings applied as aerosils on the temperature and amplitude dependences of the internal friction in the sample composite materials. The research has revealed anomalies and peak effects in the coated samples in the temperature spectrum, both in the low-temperature and high-temperature areas. The study has revealed the effect of coating (NiА1–SiO2·Al2O3) on the peaks of various physical nature.The presence of complex damping characteristics is due to the complex microstructure of the coating that contains internal interfaces and pores. Moreover, additional damping mechanisms are realized at the interfaces of individual grains, particles, and also at the interphase interaction boundary in the “coating-base” system.The proposed damping criterion is based on understanding of the opposite influence of coatings on the display of various factors. Such factors include: an increase in the damping in the energy of elastic vibrations and, at the same time, fixation of dislocations and a decrease in the shear formation in the presence of nanocomponents in different coating zones.
关键词：plasma coating;internal friction;damping;nanocomponents;anomalous properties;modulus of elasticity
