Inventors:
Clarke G. Homan - Schenectady NY
David P. Kendall - Brunswick NY
Robert K. MacCrone - Colonie NY
Assignee:
The United States of America as represented by the Secretary of the Army - Washington DC
International Classification:
C04B 3500
C01G 1102
Abstract:
Process for preparing cadmium sulfide compositions which are in a metasta state possessing greatly increased electrical conductivity and magnetic properties. The process comprises pressure quenching a cadmium sulfide composition containing between about 0. 5% and 3. 0% by weight chlorine, obtained by precipitation of CdS from aqueous CdCl. sub. 2 solution with H. sub. 2 S, to produce a precipitate containing a mixture of CdS and a complex compound of CdCl. sub. 2 and CdS, which is washed with water to remove uncomplexed CdCl. sub. 2. The pressure quenching treatment involves suddenly releasing the cadmium sulfide composition from a high pressure of at least 32 K bars at rates of at least 10. sup. 4 bars/sec.
