Accession Number : AD0670898

Title :   REACTION OF MOLYBDENUM WITH TITANIUM CARBIDE (VZAIMODEISTVIE MOLIBDENA S KARBIDOM TITANA),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Eremenko,V. N.

Report Date : 26 SEP 1967

Pagination or Media Count : 13

Abstract : Interaction between molybdenum and titanium carbide in the 1.2-90 mol % TiC range was investigated by x-ray and metallographic techniques. Samples of Mo-TiC in various ratios were prepared by prolonged melting technique as well as by fusion in vacuo of mixtures of TiC with Mo at 1850-2000C. The oxygen was removed from the samples by reduction with hydrogen at 1000C. It was found that the Mo-TiC system is quasibinary and exhibits a eutectic type crystallization pattern. The eutectic temperature is 2175 plus or minus 15C. The solubility of Mo in TiC at the eutectic temperature is 37 mol % and at 2000C it is 25 mol %. The solubility of TiC in Mo at the eutectic temperature is within the 3.5-4.5 mol % range and at 2000C it falls within the 2-2.5 mol % range. The temperature dependence of the thermodynamic activity of carbon in TiC and Mo2C is shown. A phase diagram of the quasibinary Mo-TiC system is also given. (Author)

Descriptors :   (*MOLYBDENUM ALLOYS, CHEMICAL REACTIONS), (*TITANIUM COMPOUNDS, CHEMICAL REACTIONS), (*CARBIDES, CHEMICAL REACTIONS), REFRACTORY METAL ALLOYS, TITANIUM ALLOYS, CARBON ALLOYS, MOLYBDENUM COMPOUNDS, CRYSTALLIZATION, SOLID SOLUTIONS, EUTECTICS, GRAIN STRUCTURES(METALLURGY), PHASE DIAGRAMS, USSR

Subject Categories : Inorganic Chemistry
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE