| Autor: |
REN Zhong-shan, HU Xiao-jun, ZHENG Jian-chao, ZHOU Guo-zhi, XUE Xiang-xin |
| Jazyk: |
čínština |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
工程科学学报, Vol 37, Iss 7, Pp 867-872 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
2095-9389 |
| DOI: |
10.13374/j.issn2095-9389.2015.07.007 |
| Popis: |
The diffusion couple was used to study solid state reaction in the FexO-TiO2 system at a temperature range of 1323 to 1473 K,during which the oxygen partial pressure was controlled by CO-CO2 gas mixture. The cross-sections of the diffusion couple were observed by electron probe microanalysis(EPMA),and the diffusion concentration profiles of Fe2+,Ti4+,and O2- ions were also determined. In combination with the phase diagram of the Fe O-TiO2 system,it was found that ulvospinel,ilmenite,pseudobrookite phases formed during the reaction and their growth was diffusion-controlled. According to the concentration changes of diffusion ions,the diffusion path of Fe ions was plotted,based on which the solid state reaction mechanism of this system was reasonably proposed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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