The determination of rare earth alloying additives in special steels by neutron activation analysis |
| |
| Authors: | N N Dogadkin O I Kychinskaya V I Tustanovsky Yu V Yakovlev |
| |
| Institution: | (1) The Vernadsky Institute of Geochemistry and Analytical, Chemistry of the Academy of Sciences of USSR, Moscow, USSR;(2) The Moscow Institute of Steel and Alloys, Moscow, USSR |
| |
| Abstract: | A procedure for neutron-activation analysis of cerium, lanthanum, praseodymium and neodymium, tested on more than thirty samples
of steels, is described. After irradiation for 20 hrs with a neutron flux of 1.2·1013 n·cm−2·sec−1 the steel samples were dissolved in aqua regia and extraction separation of iron from 6N HCl by ether was employed. The REE
were separated as a group by precipitation as fluorides and hydroxydes. The individual rare-earth elements were separated
from each other using a KU-2 cation exchange resin and a solution of ammonium α-hydroxyisobutirate as eluant. The separated
samples were counted on a NaI(T1) γ-spectrometer. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
