Impurity Characterization by LA-ICP-MS in Terbium Metal after Solid State Electrotransport Purification

Xiao Wei Zhang; Rui Ying Miao; Jia Min Zhong; Zong An Li; Dao Gao Wu; De Hong Chen; Zhi Qiang Wang

doi:10.4028/p-965yg3

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 921Impurity Characterization by LA-ICP-MS in Terbium...

Impurity Characterization by LA-ICP-MS in Terbium Metal after Solid State Electrotransport Purification

Abstract:

Terbium metal rod with the dimension of 6.8mm in diameter and 150mm in length has been purified by solid state electrotransport (SSE) at 1050°C under a pressure of 10^-5Pa for 50h, and the impurity distribution has been determined by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The research results indicate that, the rare earth impurity migrates from cathode to anode of the rod, and the impurity distribution is relatively uniform in the longitudinal section; low melting point impurity of Al migrates from cathode to anode and the impurity concentration distribution is relatively uniform in the longitudinal section, the segregation degree is about 10% in each sample; the impurity with high melting point, Ta, W, Mo, etc., the distribution of above impurity is very non-uniform, for the impurity of Ta, the mean concentration of sample 7 is only 8.75 ppm, but the local concentration is up to 350 ppm, and it exists in an elementary substance form in the Tb; non-rare earth impurity in Tb metal, such as Ni, Si and Ti, migrates from cathode to anode of the rod significantly; the total impurity content in cathode end is lower than other posion, the impurty content of 22 imputies in sample 6 is 648.47 ppm, is the lowest in the Tb rod, except for the high melting point impurities, the lowest impurity content is 60.05ppm in sample 7.

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Periodical:

Key Engineering Materials (Volume 921)

Pages:

119-128

DOI:

https://doi.org/10.4028/p-965yg3

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Online since:

May 2022

Authors:

Xiao Wei Zhang*, Rui Ying Miao, Jia Min Zhong, Zong An Li, Dao Gao Wu, De Hong Chen, Zhi Qiang Wang

Keywords:

High Melting Point Impurity, LA-ICP-MS, Non-Rare Earth Impurity, Rare Earth Impurity, Solid State Electrotransport, Terbium Metal

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