Effect of Additives and Carbon Resources on Thermal Shock Resistance of Spinel-C Material
| Autor: | Jin Song Yang, Guo Qi Liu, Zheng Wei |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Thermal shock
Materials science Silicon Mechanical Engineering Metallurgy Alloy Spinel chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Corrosion Nickel chemistry Mechanics of Materials engineering General Materials Science Graphite Composite material 0210 nano-technology Carbon |
| Zdroj: | Key Engineering Materials. 726:440-444 |
| ISSN: | 1662-9795 |
| Popis: | Spinel-C material is important for monolithic stopper and submerged nozzle, which usually determine the application effects. Spinel-C specimens with 8% flake graphite is characterized by good corrosion resistance but poor thermal shock resistance. The effects of additives (Al-Si alloy, silicon powder, B4C and SiC), flake graphite (+199/-199), ultrafine flake graphite, expanded graphite and nickel nitrate + pitch powder on thermal shock resistance of spinel-C material were investigated by using water-quenching method. The results show that: (1) The addition of Al-Si alloy and B4C can significantly decrease the residual strength ratios (RSR) of the specimens. The addition of SiC and silicon powder can improve the RSR obviously. (2) The flake graphite of different particle sizes has little effect on the RSR of the specimens. With the increasing of the expanded graphite content, the RSR of the specimens increases. (3) The addition of mesophase pitch and Carboresâ P can receive the RSR rise of 74% and 59% respectively. |
| Databáze: | OpenAIRE |
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