SOME PROBLEMS AND PROSPECTS FOR THE DEVELOPMENT OF BERYLLIUM PRODUCTION

Аңдатпа

On the world market of beryllium products, there is a steady demand for beryllium metal products for precision instrumentation: gyroscope rotors, metal optics parts, etc. To be used for these purposes, sintered beryllium must meet several requirements, the main of which is to ensure high dimensional stability of finished products. In the conditions of the availability of a production base in the Republic of Kazakhstan for the manufacture of beryllium products, and as a consequence of the potential for expanding the range of beryllium products, an urgent task is to study the material science foundations, production methods, technological techniques with which it is possible to control the special properties of sintered beryllium blanks. The paper presents an overview of the foreign works of the leading research centers on beryllium: USA, Ukraine, Russia. The analysis of studies of the microstructure and nanostructure of grain boundaries, the role of impurities, primarily beryllium oxide, the features of the crystallographic texture that lead to the occurrence of micro stresses, from the standpoint of their influence on the precision properties of beryllium is presented. Based on the critical analysis, the ways of research on the development of scientific foundations for the creation of an instrument grade of beryllium concerning the existing unique equipment of beryllium production in Kazakhstan, which is currently in conservation, are substantiated.