| 학회 |
한국재료학회 |
| 학술대회 |
2010년 가을 (11/11 ~ 11/12, 무주리조트) |
| 권호 |
16권 2호 |
| 발표분야 |
B. Nano materials and processing Technology(나노소재기술) |
| 제목 |
The fabrication of niobium powder for capacitor by metallothermic Reduction Process |
| 초록 |
Niobium powder was fabricated by metallothermic reduction process using K2NbF7 as a raw materials, KCl and KF as the diluents and sodium as a reducing agent. The apparatus for the experiment was designed and built specifically for the present study. Varying properties of niobium powder depending on reaction temperature and excess of reducing agent were analyzed. The niobium particle size increased significantly as reduction temperature increased from 993K to 1093K. The particle size was fairly uniform at given reaction temperature, varying from 0.2㎛ to 50㎚ depending on the reaction temperature. The yield of niobium powder increased from 58% to 83% with a increase in reaction temperature. The average particle size of niobium powder was improved from 70㎚ to 0.2㎛ with increase in the amount of sodium excess. In addition, the yield of niobium powder was 82% in the 5% sodium excess. |
| 저자 |
윤재식1, 조영훈1, 박승영1, 윤동주2, 김병일2
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| 소속 |
1한국기초과학지원(연), 2순천대 |
| 키워드 |
Niobium powder; Metallothermic reduction; Diluent; Reaction temperature; Reducing agent; Particle size; Yield
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| E-Mail |
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