التفاصيل البيبلوغرافية
| العنوان: |
Microstructure evolution and high-temperature oxidation behavior of low-carbon MgO-C refractories with TiB2 addition. |
| المؤلفون: |
Liu, Jiangao1 (AUTHOR), Chen, Min1 (AUTHOR) chenm@smm.neu.edu.cn, Wang, Nan1 (AUTHOR), Sui, Xi1 (AUTHOR) |
| المصدر: |
Ceramics International. Dec2024:Part B, Vol. 50 Issue 24, p54791-54801. 11p. |
| مصطلحات موضوعية: |
*PHENOLIC resins, *CARBON nanotubes, *TITANIUM dioxide, *REFRACTORY materials, *OXIDATION |
| مستخلص: |
Combining the advantages of both containing-B compounds and containing-Ti compounds, a new TiB 2 addition is proposed in MgO-C refractories. In this paper, the high-temperature oxidation behavior of low-carbon MgO-C refractories with TiB 2 addition was investigated, especially the effect of microstructure and phase evolution on the high-temperature oxidation behavior was discussed. The results show that in the materials, TiB 2 preferentially reacts with oxygen, forming TiC x N 1-x , Mg 3 (BO 3) 2 and Mg 2 TiO 4 ceramic phases, and catalyzing the decomposition of phenolic resin to form bamboo-like nanotubes and carbon nanospheres to bond aggregates and fill pores. Meanwhile, TiB 2 also promotes the formation of regenerated MgO compact zone, hindering the diffusion of oxygen into the materials to improve the oxidation resistance. Compared with the blank control specimen and the specimen with B 4 C addition, the oxidation resistance increased by 243.4 % and 79.2 %, respectively. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |