Niobium and Niobium Compounds

Eckert, Joachim

doi:10.1002/14356007.a17_251

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…At present, industrial niobium powder is mainly obtained by crushing niobium strip and hydrogenating. Although the particle size of niobium powder is relatively small, which is conducive to the compactness of powder metallurgy products, niobium powder with small particle size has high affinity with oxygen and is easy to adsorb oxygen, resulting in high oxygen content of niobium powder [1][2][3][4][5]. Too high oxygen content in niobium powder will seriously affect the physical, mechanical and electrical properties of niobium, thus restricting the application of niobium and niobium alloys [6][7][8][9][10].…”

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confidence: 99%

Effect of Magnesium Reduction Process on Oxygen Content of Pickling Niobium Powder

Wang

Liu

Zhang

et al. 2021

Preprint

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Aiming at the problem of high oxygen content in industrial niobium powder, the oxygen reduction process of high oxygen niobium powder magnesium was studied. Based on the thermodynamic analysis of magnesium thermal reduction of niobium powder, the effects of reduction temperature, magnesium addition, reduction time and reduction atmosphere on oxygen content of pickling niobium powder were studied. The results show that: with the increase of magnesium addition, the oxygen content of pickling niobium powder gradually decreases to a certain value and then remains unchanged. In a certain temperature range (953k-1203k), with the increase of reduction temperature, the oxygen content of pickling niobium powder first decreases and then increases, and the best oxygen content is 356ppm at 1133k; with the extension of reduction time (2-6h), the oxygen content of pickling niobium powder first decreases and then remains unchanged. Finally, the oxygen content of pickled niobium powder is reduced to about 356 ppm at 400% Mg addition, 1133 K reduction temperature and 4 h reduction time.

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Effect of Magnesium Reduction Process on Oxygen Content of Pickling Niobium Powder

Wang

Liu

Zhang

et al. 2021

Preprint

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“…nióbio vem sendo pouco estudado como catalisador em sintese orgânica e sua grande capacidade de formar complexos vem sendo pouco aproveitada. O grande uso do nióbio cerca de 85-90% da produção mundial é aplicada na industria do aço na forma de ligas de ferro-nióbio, que podem conter de 40 a 50 % de nióbio 24.…”

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Estudos sobre o uso de NbCI>sub<5>/sub< como catalisador em reações de Friedel-Crafts

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Niobium and Niobium Compounds

Cited by 2 publications

References 23 publications

Effect of Magnesium Reduction Process on Oxygen Content of Pickling Niobium Powder

Effect of Magnesium Reduction Process on Oxygen Content of Pickling Niobium Powder

Estudos sobre o uso de NbCI>sub<5>/sub< como catalisador em reações de Friedel-Crafts

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