Influence of ceramic phase content and its morphology on mechanical properties of MgO–C refractories under high temperature nitriding
Source abstract
Abstract
Abstract To evaluate the influences of ceramic phase content and its morphology on the mechanical properties of MgO–C refractories, pre-prepared Si powder-phenolic resin loaded with Fe2O3 was introduced to prepare MgO–C refractories via catalytic nitridation. The effects of nitriding temperature and Fe2O3 content on the phase composition, microstructure evolution and properties of MgO–C refractories were studied and compared. The results show that the increase of the nitriding temperature was conducive to the in-situ formation of the ceramic phases, and a new phase of Mg2SiO4 was formed at temperatures ≥1450 °C. Both the increase in nitriding temperature and the addition of catalyst could inhibit the growth of α-Si3N4 to promote the formation of β-Si3N4 and MgSiN2. In addition, the formation of excessive ceramic phases caused samples after nitriding to expand violently and form more porous, thereby reducing the physical properties of MgO–C refractories.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Aluminum Alloys Composites Properties
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References (31)
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1. Improved properties of low-carbon MgO–C refractories with the addition of multilayer graphene/MgAl2O4 composite powders10.1111/ijac.13347 ↗
2. Influence of sintering process and interfacial bonding mechanism on the mechanical properties of MgO–C refractories10.1016/j.ceramint.2020.03.263 ↗
3. Combustion synthesis of B4C/Al2O3/C composite powders and their effects on properties of low carbon MgO–C refractories10.1016/j.ceramint.2019.05.174 ↗
4. Interfacial spinellisation of MgO–C/Al2O3–C composite functional refractory component at high temperatures10.1016/j.ceramint.2020.09.122 ↗
5. Micro-nano carbon structures with platelet, glassy and tube-like morphologies10.3390/nano9091242 ↗
6. Novel synthesis and characterization of silicon carbide nanowires on graphite flakes10.1016/j.ceramint.2013.08.051 ↗
7. Wetting, spreading and corrosion behavior of molten slag on dense MgO and MgO–C refractory10.1016/j.ceramint.2018.09.234 ↗
8. Preparation of in situ grown silicon carbide whiskers onto graphite for application in Al2O3–C refractories10.1016/j.ceramint.2018.04.243 ↗
9. Molten salt synthesis and characterization of SiC whiskers containing coating on graphite for application in Al2O3–SiC–C castables10.1016/j.jallcom.2018.09.107 ↗
10. Effect of carbon content on the oxidation resistance and kinetics of MgO–C refractory with the addition of Al powder10.1016/j.ceramint.2019.10.010 ↗
11. Enhancement of the thermal shock resistance of MgO–C slide plate materials with the addition of nano-ZrO2 modified magnesia aggregates10.1016/j.jallcom.2020.156339 ↗
12. Evolution of c-ZrN nanopowders in low-carbon MgO–C refractories and their properties10.1016/j.jeurceramsoc.2020.07.062 ↗
13. Oxidation behaviors of MgO–C refractories with different Si/SiC ratio in the 1100–1500 °C range10.1016/j.ceramint.2019.07.086 ↗
14. Phase behavior analysis of MgO–C refractory at high temperature: influence of Si powder additives10.1016/j.ceramint.2014.12.029 ↗
15. Preparation and application of ZrC-coated flake graphite for Al2O3–C refractories10.1016/j.jallcom.2019.02.239 ↗
16. Properties of MgO–Fe–C refractories as linings of vanadium-extraction converter10.1016/j.jeurceramsoc.2014.06.003 ↗
17. Effect of Fe addition on the microstructure and oxidation behavior of MgO–C refractory10.1016/j.matchemphys.2019.121935 ↗
18. Effects of alumina sources on the microstructure and properties of nitrided Al2O3–C refractories10.1016/j.ceramint.2014.12.127 ↗
19. Controllable synthesis of Si@SiC plate@Si3N4 whisker with core-shell structure and their electrochemical performances10.1016/j.powtec.2020.08.100 ↗
20. Thermodynamic calculation and microscopic examination of liquid phase formation in MgO–C refractories contain calcium magnesium aluminate10.1016/j.matchemphys.2020.123723 ↗
21. Effect of Si powder-supported catalyst on the microstructure and properties of Si3N4–MgO–C refractories10.1016/j.conbuildmat.2019.117964 ↗
22. Preparation and thermal shock behavior of nanoscale MgAl2O4 spinel-toughened MgO-based refractory aggregates10.1016/j.ceramint.2019.03.107 ↗
23. Molten-salt nitridation synthesis of cubic ZrN nanopowders at low temperature via magnesium thermal reduction10.1016/j.ceramint.2018.02.019 ↗
24. Properties of inorganic high-temperature adhesive for high-temperature furnace connection10.1016/j.ceramint.2019.01.190 ↗
25. Low temperature synthesis via molten-salt method of r-BN nanoflakes, and their properties
26. β-Si3N4 microcrystals prepared by carbothermal reduction-nitridation of quartz
27. Combustion synthesis of MgSiN2 powders and Si3N4–MgSiN2 composite powders: effects of processing parameters10.1111/jace.16710 ↗
28. Effects of silicon powder content on the properties and interface bonding of nitrided Al2O3–C refractories10.1016/j.matchemphys.2017.11.011 ↗
29. Synthesis of rod-like β-Si3N4 seed crystals with tailored morphology10.1016/j.ceramint.2014.12.091 ↗
30. Formation mechanism of elongated β-Si3N4 crystals in Fe–Si3N4 composite via flash combustion10.1016/j.ceramint.2018.02.155 ↗
31. Plasma-assisted catalytic reduction of SO2 to elemental sulfur: influence of nonthermal plasma and temperature on iron sulfide catalyst10.1016/j.jcat.2020.08.013 ↗