Procédé de fabrication de produits composés de verre et de métal et produits obtenus

摘要

1,130,324. Glass-metal mixture. GLAVERBEL. 11 Jan., 1966 [28 April, 1965], No. 1349/66. Heading C1M. In the preparation of solid matter compositions of intermixed glass .and metal, at least one compound containing metal is reduced in situ in a mixture of such compound with particles of glass and the mixture is sintered during or subsequent to such reduction and may be further heated to melt the metal. The metal compound is preferably the oxide or is first reduced to the oxide and the compound may be in particle or liquid form, a gel or colloidal suspension in a liquid or condensed on to the glass particles from the vapour phase. The metal oxide may be diffused into the glass before reduction and the oxides of Li, Ag and Cu may be thus used and also for promoting devitrification of the glass. Reduction is preferably by. CO or by H 2 and cellular glass may be produced by bubbles of gas released during reduction or by the addition of suitable compounds to release gas when heated. The glass particles may be in the form of fibres or spheroids. Sintering is effected by heating and pressure, pressures between 350 and 1000 Kg/ cm2 being suggested and may be in an atmosphere of N 2 or argon. Specific soda-lime and Si-Ca-Al glasses and examples are given using Cu, Ni and Fe as the metal.