Accession Number : AD0665705

Title :   PROBLEM OF FUSING-IN TIN IN GALLIUM ARSENIDE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Libov,L. D. ; Meskin,S. S.

Report Date : 23 AUG 1967

Pagination or Media Count : 16

Abstract : The starting materials for the tests were: polycrystalline gallium arsenide and OSCh-OO tin. Before weighing, the gallium arsenide samples were polished with electrocorundum powder and cleansed in a solution of sodium hydroxide and hydrogen peroxide. The weight of the gallium arsenide samples varied from 4 to 8 grams. At the end of the holding time the sample of gallium arsenide was removed quickly from the molten tin and cleansed in hydrochloric acid, in which gallium arsenide is practically insoluble. Several experiments were made at each set of temperature conditions. The tests lasted from three to eighteen hours and equilibrium conditions set in after 9-12 hours. The experimental data obtained by the weight and drop methods are exhibited in the form of sections of the liquidus curves for the system Sn-GaAs in the temperature interval 400-800C. The phase structure was determined by an X-ray method. The liquidus lines and a knowledge of the distribution coefficient of tin at the melting temperature of gallium arsenide made it possible to calculate the specific fusibility of tin into solid gallium arsenide in the temperature range 400-800C.

Descriptors :   (*GALLIUM ARSENIDES, SOLUBILITY), TIN, SEMICONDUCTORS, TEMPERATURE, NITROGEN, THERMOCOUPLES, WETTING, CRYSTALLIZATION, ALLOYS, EXPERIMENTAL DATA, USSR

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE