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| DETERMINATlON OF THE TOTAL CONTENT AND PHASES OF RARE-EARTH ELEMENTS IN STEELS |
| LI TAT-CHUNG;WANG SHOU-FEN Institute of Metal Research; Academia Sinica |
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Cite this article:
LI TAT-CHUNG;WANG SHOU-FEN Institute of Metal Research; Academia Sinica. DETERMINATlON OF THE TOTAL CONTENT AND PHASES OF RARE-EARTH ELEMENTS IN STEELS. Acta Metall Sin, 1965, 8(3): 366-372.
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Abstract For determining the total content of rare-earth elements in steels, a method con-sisting of extraction with ether, precipitation with oxalic acid and photometric determina-tion with arsenazo has been established. By dissolving the sample with a suitable elec-trolyte and separating the carbide involved, the phases of rare-earth elements presentedin steels may be also be determined quantitatively. The phenomenon of ionic inter-ference in the process of photometric determination has been observed, and a method toprevent it from occuring has been proposed. Furthermore, some important aspects ofoperations such as the dissolution of sample are discussed. The present method may beused to determine the content of rare-earth elements in common alloy steels not con-taining nickel, and the error is less than ±10％.
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Received: 18 March 1965
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[1] #12．
[2] Shibata, S., Takeuchi, F.: Anal. Chim. Acta, 1959, 21, 177．
[3] #12
[4] #12．
[5] Moriarty, J. L., Bornong, B. J.: Anal. Chem., 1962, 34, 871．
[6] 李诗(金卓),王玉梅:金属学报,1959,4,81．
[7] Hillebrand, W. F., Lundell, G. E. F.: Applied Inorganic Analysis, 2nd ed., (Wiley, 1953) , p. 134．
[8] Клячко,Ю.Т.等著,黄舜华译:钢中气体、非金属夹杂物及碳化物的分析,(冶金工业出版社,1960年),下册,26页.
[9] Клячко,Ю.Т.等著,黄舜华译:钢中气体、非金属夹杂物及碳化物的分析,(冶金工业出版社,1960年),下册,43页. |
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