Open AccessMICROFRAGMENTATION OF CAST MICA-CRYSTALLINE MATERIAL UNDER DYNAMIC COMPRESSION
Author(s) -
А. М. Игнатова,
Мaxim V. Yudin,
М. Н. Игнатов,
Мikhail А. Sokovikov,
Vasiliy Chudinov
Publication year - 2021
Publication title -
izvestiâ vysših učebnyh zavedenij. himiâ i himičeskaâ tehnologiâ/izvestiâ vysših učebnyh zavedenij. seriâ himiâ i himičeskaâ tehnologiâ
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.221
H-Index - 5
eISSN - 2500-3070
pISSN - 0579-2991
DOI - 10.6060/ivkkt.20216402.6277
Subject(s) - mica , materials science , fracture (geology) , composite material , compression (physics) , deformation (meteorology) , scanning electron microscope , mineralogy , chemistry
The study aimed at assessing the prospects of using mica-crystalline material of the fluorophlogopite type (the main phase corresponds to the compound KMg3(Si3AlO10)F2) for use in the manufacture of armored products. To carry out such an assessment, the study established the features of the deformation of cast mica-crystalline material of the fluorophlogopite type under dynamic compression by the method of the split Hopkinson-Kola rod. It was revealed that the destruction of cast mica crystalline material at an average strain rate of 250-1500 s-1 occurs with the formation of finely divided fragments. The exposure rate was chosen by analogy with the well-known tests of materials of a similar purpose with a glass crystal structure. For a quantitative assessment of the fracture intensity, the fractional composition of the fracture fragments was analyzed by analyzing the images obtained by scanning electron microscopy. In the course of the analysis of the experimental data, it was found that a characteristic indicator in the analysis of the fractional composition of fracture fragments is the proportion of those whose size is from 1 to 100 μm in the total mass of fragments up to 1000 μm (larger fragments are not considered, since they are formed again as fragments destruction arising after the formation of main cracks), for the material studied, this indicator under the specified exposure conditions ranged from 83 to 87%, which, based on a comparison with similar materials used in the manufacture of elements of armored products, allows us to evaluate it as a material promising in this field of application, since in addition to the optimal indicators of fractional fracture upon impact, this material has a lower density in comparison with analogues and products from it may have a lower mass, which is a competitive advantage.