Aluminum Company of America

Thomas L Francis

Frankie E Phelps

Alfred F LaCamera

John E Marhanka

Raymond P Heilich

Evelyn M DeLiso

Ronald A Kois

Douglas G Graham

Robert A Gilbert

A refractory assembly for containment of molten aluminum-lithium alloys, comprising a nitride bonded silicon carbide refractory brick and a seam joined to the brick. The seam is formed from a mortar mix comprising particulate nitride refractory filler and colloidal sol binder. The brick and seam both exhibit good resistance to attack by molten aluminum-lithium alloys at elevated temperatures.

Refractory assembly for containment of molten Al-Li alloys

A refractory composition having a high resistance to corrosion by molten metal chlorides and chlorine gas at elevated temperatures. The composition comprises about 100 parts by weight of a nitride refractory filler, a suitable quantity of a colloidal sol binder and less than about 4 parts by weight of the oxides or hydroxides of magnesium, calcium, chromium and manganese.

Refractory composition comprising nitride filler and colloidal sol binder

A process for producing a refractory material comprising essentially beta'-SiAlON wherein the initial reactants include discrete particles of an SiO.sub.2 source and discrete particles of an Al.sub.2 O.sub.3 source.

Process for producing beta'-silicon aluminum oxynitride (B'-SiAlON)

A lightweight, porous, ceramic material is made by mixing a slurry containing a foaming agent until a constant volume of foam is achieved. The foam is then pumped or poured into a mold or form where it sets up into a cellular structure. The formed foam is then cured, dried and heated at elevated temperatures. The slurry used in making the foam is made from ceramic particles, water, foaming agent and bonding materials. The bonding materials function to provide an initial bond as the foam is generated to prevent foam collapse, a low temperature bond after the foam structure is set, cured and dried, and a final bond after heating to elevated temperatures. In a preferred embodiment, the ceramic particles used are alumina.

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Murrysville, PA, United States of America

Thomas L Francis