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Synthesis of Ternary Solid Solutions

IP.com Disclosure Number: IPCOM000096434D
Original Publication Date: 1963-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Berkenblit, M: AUTHOR [+3]

Abstract

The synthesis of ternary or higher order solid solutions presents a difficult problem, since high temperature and extended annealing processes must be normally employed. Ternary solid solutions of elements of Group 11 metals with those of Group VI elements at low temperatures can be prepared at temperatures lower than the melting temperatures of either of the constituents comprising the solid solution and the solid solution melting temperature, itself. Furthermore, this synthesis takes place at about the temperature of the highest melting point element.

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Synthesis of Ternary Solid Solutions

The synthesis of ternary or higher order solid solutions presents a difficult problem, since high temperature and extended annealing processes must be normally employed. Ternary solid solutions of elements of Group 11 metals with those of Group VI elements at low temperatures can be prepared at temperatures lower than the melting temperatures of either of the constituents comprising the solid solution and the solid solution melting temperature, itself. Furthermore, this synthesis takes place at about the temperature of the highest melting point element.

The process comprises heating the powered elements in sufficiently small particle size so that any reaction inhibiting layers which form would be of a thickness greater than the particle size and thus consume the particles during the formation of the reaction inhibiting layer. The reactants are heated at a rate such that liquid phase diffusion time through the formed solid matrix would be adequate. This process has among its chief advantages low temperature, controlled reaction and homogeneous solution.

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