Open AccessСтруктура и механические свойства пористой диатомитовой керамики после деформации сжатием
Author(s) -
А. А. Скворцов,
М.Н. Лукьянов,
I. E. Chebeneva,
А.А. Скворцова
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.04.50637.18395
Subject(s) - porosity , materials science , composite material , elastic modulus , ceramic , modulus , compression (physics) , deformation (meteorology)
This work is devoted to the study of the mechanical properties of porous ceramics based on diatomite. Based on the morphological analysis of the studied samples, the porous structure of ceramics (morphology and average pore diameter) was analyzed and the numerical value of the porosity of the samples (35...50%) was determined. The values of the static (70...115 GPa) and dynamic elastic modulus of the samples (37...50 GPa) were measured experimentally. The dependence of the dynamic modulus of porous diatomite ceramics on porosity is studied: the elastic modulus decreases with increasing porosity of the material. A decrease in the porosity of the material after deformation was also found. The formation of diatomite filaments after deformation of samples by compression at a rate of no more than 8 * 10-4 s-1 was detected.