Abstract
Metal borides are widely used as heat-insulating materials, however, the range of their application in high-temperature conditions with oxidative medium is significantly restricted. To improve the thermal stability of structural materials based on titanium boride, and to prevent the growth of TiB2 crystals, additives based on alumina-magnesia spinel with chemical resistant and refractory properties have been used. The aim of this work is to study the structure of TiB2 with alumina-magnesia spinel additives obtained by self-propagating high-temperature synthesis (SHS). TiB2 structure with uniform fine-grained distribution was obtained in an MgAl2O4 matrix. The material composition was confirmed by X-ray diffraction analysis (DRON-3M, filtered Co kα-emission), FTIR spectroscopy (Thermo Electron Nicolet 5700, within the range of 1300–400 cm−1), and scanning electron microscopy (Philips SEM 515). The obtained material represents a composite, where the particles of TiB2 with a size of 5 µm are uniformly distributed in the alloy of alumina-magnesia spinel.
| Original language | English |
|---|---|
| Article number | 295 |
| Journal | Metals |
| Volume | 7 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 3 Aug 2017 |
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Keywords
- Alumina-magnesia spinel
- Composites
- Self-propagating high-temperature synthesis
- Titanium diboride
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Self-propagating high temperature synthesis of TiB2–MgAl2O4 composites. / Radishevskaya, Nina; Lepakova, Olga; Karakchieva, Natalia; Nazarova, Anastasiya; Afanasiev, Nikolai; Godymchuk, Anna; Gusev, Alexander.
In: Metals, Vol. 7, No. 8, 295, 03.08.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Self-propagating high temperature synthesis of TiB2–MgAl2O4 composites
AU - Radishevskaya, Nina
AU - Lepakova, Olga
AU - Karakchieva, Natalia
AU - Nazarova, Anastasiya
AU - Afanasiev, Nikolai
AU - Godymchuk, Anna
AU - Gusev, Alexander
PY - 2017/8/3
Y1 - 2017/8/3
N2 - Metal borides are widely used as heat-insulating materials, however, the range of their application in high-temperature conditions with oxidative medium is significantly restricted. To improve the thermal stability of structural materials based on titanium boride, and to prevent the growth of TiB2 crystals, additives based on alumina-magnesia spinel with chemical resistant and refractory properties have been used. The aim of this work is to study the structure of TiB2 with alumina-magnesia spinel additives obtained by self-propagating high-temperature synthesis (SHS). TiB2 structure with uniform fine-grained distribution was obtained in an MgAl2O4 matrix. The material composition was confirmed by X-ray diffraction analysis (DRON-3M, filtered Co kα-emission), FTIR spectroscopy (Thermo Electron Nicolet 5700, within the range of 1300–400 cm−1), and scanning electron microscopy (Philips SEM 515). The obtained material represents a composite, where the particles of TiB2 with a size of 5 µm are uniformly distributed in the alloy of alumina-magnesia spinel.
AB - Metal borides are widely used as heat-insulating materials, however, the range of their application in high-temperature conditions with oxidative medium is significantly restricted. To improve the thermal stability of structural materials based on titanium boride, and to prevent the growth of TiB2 crystals, additives based on alumina-magnesia spinel with chemical resistant and refractory properties have been used. The aim of this work is to study the structure of TiB2 with alumina-magnesia spinel additives obtained by self-propagating high-temperature synthesis (SHS). TiB2 structure with uniform fine-grained distribution was obtained in an MgAl2O4 matrix. The material composition was confirmed by X-ray diffraction analysis (DRON-3M, filtered Co kα-emission), FTIR spectroscopy (Thermo Electron Nicolet 5700, within the range of 1300–400 cm−1), and scanning electron microscopy (Philips SEM 515). The obtained material represents a composite, where the particles of TiB2 with a size of 5 µm are uniformly distributed in the alloy of alumina-magnesia spinel.
KW - Alumina-magnesia spinel
KW - Composites
KW - Self-propagating high-temperature synthesis
KW - Titanium diboride
UR - http://www.scopus.com/inward/record.url?scp=85027068384&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85027068384&partnerID=8YFLogxK
U2 - 10.3390/met7080295
DO - 10.3390/met7080295
M3 - Article
AN - SCOPUS:85027068384
VL - 7
JO - Metals
JF - Metals
SN - 2075-4701
IS - 8
M1 - 295
ER -