Accession Number : AD0658218

Title :   PREPARATION OF THE INTERMETALLIC COMPOUND YCO5 BY THE AMALGAM PROCESS,

Corporate Author : TECHNISCHE HOCHSCHULE VIENNA (AUSTRIA) INSTITUT FUER ANGEWANDTE PHYSIK

Personal Author(s) : Lihl,Franz

Report Date : 03 NOV 1966

Pagination or Media Count : 38

Abstract : The intermetallic compound YCo5 promises to be an excellent material for high quality permanent magnets. It is, however, essential to prepare this compound in single domain particles of a grain size of the order of 10 micromillimeters. The preparation of YCo5-powders by means of the amalgam process is described in detail. The process consists of several steps, namely: (1) Preparation of Y-amalgam by solving yttrium-metal at 450C in liquid mercury; (2) preparation of Co-amalgam by electrolysis; (3) mixing of the amalgams; (4) distillation of the mercury at temperatures up to 1100C. By X-ray investigations the structure of YCo5 was confirmed and the range of homogeneity established to be very small. Metallographic and magnetic measurements proved that the amalgam process actually is a preferable means for preparing YCo5 powders. (Author)

Descriptors :   (*MAGNETIC MATERIALS, INTERMETALLIC COMPOUNDS), (*INTERMETALLIC COMPOUNDS, PREPARATION), (*YTTRIUM, INTERMETALLIC COMPOUNDS), (*COBALT ALLOYS, PREPARATION), POWDERS, PARTICLE SIZE, MERCURY ALLOYS, X RAY DIFFRACTION, TEMPERING, PHASE STUDIES, METALLOGRAPHY, GRAIN STRUCTURES(METALLURGY), DIFFERENTIAL THERMAL ANALYSIS, AUSTRIA

Subject Categories : Inorganic Chemistry
      Properties of Metals and Alloys
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE