Accession Number : AD0294507

Title :   BORIDES OF TRANSITION METALS AND THEIR ELECTRON-EMISSION PROPERTIES

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : KUDINTSEVA,G.A. ; TSAREV,B.M. ; EPEL'BAUM,V.A.

Report Date : 03 DEC 1962

Pagination or Media Count : 1

Abstract : The developed method of obtaining diborides of Ti, Zr, V, Cr, Mn and other transition metals upon the combined reduction by carbon of mixtures of oxides of the corresponding metal and boron permits the production of borides in large quantities from abundant raw material. In a series of diborides of Ti, V, Cr, and Mn of small emissions, comparable with emissions of cerium hexaboride, chromium diboride is possessed, which can be used as material of thermo-cathodes. The diborides possess a coefficient of secondary emission lower than one and, consequently, can be used as antidynatron coatings. (Author)

Descriptors :   *BORIDES, *ELECTRONS, *METALS, *THERMIONIC EMISSION, CHROMIUM COMPOUNDS, MANGANESE COMPOUNDS, SECONDARY EMISSION, STABILITY, SYNTHESIS, TITANIUM COMPOUNDS, TRANSITION METALS, VANADIUM COMPOUNDS, ZIRCONIUM COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE