Open AccessEffect of a Carbonaceous Additive on the Structure of an Aqueous Sodium Silicate Film on the Surface of a Refractory Chromite Filler
Author(s) -
Н. А. Кидалов,
Н В Григорьева,
A.S. Adamova
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/969/1/012067
Subject(s) - materials science , pyrolytic carbon , composite material , aqueous solution , chromite , sodium silicate , scanning electron microscope , silicate , filler (materials) , curing (chemistry) , chemical engineering , metallurgy , chemistry , pyrolysis , organic chemistry , engineering
The results of studying the effect of a carbonaceous additive on the structure formation of aqueous sodium silicate film on the surface of a refractory chromite filler was shown. Ultradispersed pyrolytic carbon (pyrocarbon) was used as a carbonaceous additive. The structure of liquid glass films on the surface of a refractory filler was investigated after curing at temperatures of 180-400-600-900 °C, which are comparable to the temperature of convective drying of liquid glass molds and cores, as well as molds heating temperature during pouring with liquid metal. The structure of liquid glass films on a refractory filler was investigated using a Versa 3D two-beam scanning electron microscope, which made it possible to show the effect of pyrocarbon on the structure of a silicate binder film in each temperature range.