PREPARATION OF URANIUM NITRIDE IN THE FORM OF MICROSPHERES

被引：35

作者：

LEDERGERBER, G

KOPAJTIC, Z

INGOLD, F

STRATTON, RW

机构：

[1] Paul Scherrer Institute, Laboratory for Materials Technology and Nuclear Processes

来源：

JOURNAL OF NUCLEAR MATERIALS | 1992年 / 188卷

关键词：

D O I：

10.1016/0022-3115(92)90450-Y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Uranium nitride microspheres were fabricated by internal gelation and carbothermic reduction. The influence of the thermal treatment and the reaction atmosphere on the chemical composition and the structural parameter of the sphere were systematically investigated. High density (> 95% TD) spheres of 800-mu-m diameter were obtained by reacting in argon-hydrogen followed by nitrogen-hydrogen. Porous spheres with a distinct pore and grain structure and low crushing strength as feed for pellets have been fabricated in nitrogen and nitrogen-hydrogen atmosphere. Special emphasis was put on a reliable determination of nitrogen and on X-ray diffraction for the chemical composition and on the correlation of the crushing strength to structural parameters.

引用

页码：28 / 35

页数：8

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