Method of preparing a plurality of castings having a predetermin

Details Method of preparing a plurality of castings having a predetermin Method of preparing a plurality of castings having a predetermin

1983-06-02

1985-07-16

Godici, Nicholas P.

Metal founding

Process

Shaping liquid metal against a forming surface

164 47, 1641222, 156622, 156616R, B22D 2308, H01L 738

Patent

active

045290270

ABSTRACT:
A method is set forth for simultaneously preparing a plurality of castings of a solution of an element, or compound, in a solvent, which solvent may also be an element and/or a compound. The solution is saturated at a temperature T.sub.s. A problem in liquid epitaxy growth processes is the simple preparation of growth charges of sufficient reproducible composition and size to produce epitaxial layers of reproducible composition and thickness. The present invention provides a melt consisting of the solvent, of the solvent together with at least one constituent of the solution, or of a solution which is unsaturated at the temperature T.sub.s, which melt is prepared in a boat body of a liquid-tight boat assembly. An equilibrium is established at T.sub.s between the melt and a solid body having an excess of any constituent in which the melt is deficient with respect to the saturated solution so as to form the saturated solution. The saturated solution is transferred into a plurality of moulds in which the solution is allowed to solidify to form the castings. The solid body is contained in a solid-retaining portion of a trough of the boat body, which portion is separated from the remainder of the trough by an apertured partition.

REFERENCES:
patent: 3694275 (1969-03-01), Nelson
patent: 3741825 (1973-05-01), Lockwood et al.

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