Identification of source and control of oxygen and nitrogen impurities in Kroll process for preparation of Ultra-soft titanium sponge
The titanium sponge is an important material for various applications, including in aerospace and defense fields. The impurity content in titanium sponge has a direct impact on the impurity content and defect formation of pure titanium and titanium alloys. In this study, the distribution of oxygen a...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542500849X |
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| Summary: | The titanium sponge is an important material for various applications, including in aerospace and defense fields. The impurity content in titanium sponge has a direct impact on the impurity content and defect formation of pure titanium and titanium alloys. In this study, the distribution of oxygen and nitrogen impurity elements in a titanium sponge specimen was studied, and the forms of O and N impurity elements were analyzed. Further, the forms of the impurity element O in TiCl4 and liquid magnesium, and the introduction of O and N impurities during the titanium-sponge preparation were analyzed. Finally, the sources and contents of O and N impurities at different stages in the production were determined. The following measures were identified for producing the low-hardness and Ultra-soft titanium sponge. (1) The amounts of impurities MgO, SiO2, and Al2O3 in refined magnesium need to be controlled. (2) The organic impurities containing O and C in TiCl4 needs to be decreased. (3) The air tightness should be ensured during the whole process of preparing titanium sponge by magnesium thermal reduction distillation. |
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| ISSN: | 2238-7854 |