Verfahren zum Herstellen von Gegenstaenden aus Siliziumverbindungen des Urans,申请号DE19601471036-传众专利搜索

Verfahren zum Herstellen von Gegenstaenden aus Siliziumverbindungen des Urans

申请公布号：DE1471036(A1)

申请号：DE19601471036

申请日期：1960.05.24

申请公布日期：1969.03.27

申请人：

COMMISSARIAT A L'ENERGIE ATOMIQUE

发明人：ACCARY,ANDRE;DUBUISSON,JACQUES;HUMBERT,JACQUES

分类号：C01B33/06;C04B35/51;G21C3/62

主分类号：C01B33/06

摘要：<PICT:0908941/III/1> <PICT:0908941/III/2> Shaped articles of uranium silicide are prepared by heating an intimate mixture of U and Si particles in a mould under vacuum to at least 450 DEG C. but below the fusion temperature, e.g. 625 DEG -675 DEG C. for 1 hr., and setting the coherent porous product by heating under vacuum at a higher temperature, e.g. 1400 DEG -1550 DEG C. to obtain a non-porous product. The second stage heating is preferably carried out, out of the mould and may, as the product is a conductor, be effected by passage of an electric current, or by induction. The U and Si mixture in the proportions for the required silicide are compacted in graphite mould 1 by vibration to apparent densities 5,8, 5,6, 4,4, or 3,7 for U3Si2, Usi, USi2 or USi3 respectively. The mould 1, which tapers from the centre towards each end, and is made up of sections joined by force-fitted collars 3, is placed in stainless steel tube 4. When the pressure in tube 4, which is connected through assembly 5 to a vacuum pump, is 10-5 mm. Hg, it is placed in tubular resistance furnace 9. The silicide rod B is cooled, removed from the mould and placed in silica tube 10, which is connected to vacuum through 11 and mounted on movable carriage 13. Fixed induction coil 27 heats the rod, and relative displacement of the carriage to the coil ensures that the hot zone travels through the rod. Fixed tubular resistance furnaces 26 ensure absence of an excessive temperature gradient in the rod. U3Si is also referred to in the Specification.