Abstract: A composite and a process for forming it are provided, said process comprising providing a substrate bearing crystalline and preferably single crystal filaments as growths on the substrate and forming a solid matrix encompassing the filaments. The composites are useful for aircraft, boat and auto skins and structural members.

Abstract: A process for welding 6XXX copper-containing alloy members which includes using a 5XXX aluminum filler alloy having an Mg content from 7.0 to 8.5% by weight.

Abstract: A heat treating method comprising providing metal with a polymeric barrier coating, which acts as a barrier against diffusion of reactive species and which, upon thermal decomposition, acts as an oxygen getter or reducing agent, thus extending its protection past its point of thermal stability.

Abstract: An improved method of making a lithoplate from a 5XXX type alloy which includes controlling the composition and casting practices to eliminate forming a pine tree metal structure in an ingot used for rolling a workpiece to be made into lithoplate. The method also includes homogenizing and hot rolling the ingot at a controlled initial temperature to produce a desired grain and metal microstructure in the sheet rolled from the ingot which is suited for providing a surface having substantially uniform and evenly distributed craters produced by an electrochemical method of graining.

Abstract: A process for producing aluminum hydroxide product having an improved level of whiteness is disclosed. In the process, a caustic solution having dissolved aluminum hydroxide is subjected to purification to remove color producing humate material. Purification includes passing the caustic solution through a semi-permeable membrane. The solution purified of humate material is treated to precipitate aluminum hydroxide therefrom.

Abstract: In a process utilizing steam, the method of producing at least a portion of said steam, including heating a water-containing, solid substance for generating steam and capturing the generated steam for said process. A suitable solid substance is Al(OH).sub.3. New alumina products are obtained.

Abstract: Armor element for protection against projectiles, formed by a core made of ceramic material covered with a metal envelope obtained by casting around the core a resilient alloy having high antiballistic efficiency.The envelope is strongly prestressed at casting around the ceramic core in order to inhibit the fragmentation thereof under shock due to the impact of a projectile.The invention can be applied to constructing flexible armor implements by assembling and hingedly interconnecting juxtaposed armor elements.

Abstract: Loose metal particles, or a consolidated metal particle composition, of an aluminum alloy consisting essentially of about 5 to 13% zinc, 1 to 3.5% magnesium, 0.5 to 3.0% copper, with iron being present up to 0.5%, with silicon being present up to 0.4%, plus nickel or cobalt or both being present in an amount effective essentially to place the iron in the incoherent dispersoid Al.sub.9 (Fe,M).sub.2, M being nickel or cobalt or both, M being present up to 0.75%, plus means being present for forming coherent dispersoids, said means being present up to 1%, balance aluminum.

Abstract: Aluminous material is chlorinated in the presence of a reducing agent at pressures greater than three atmospheres. A greater than linear increase in reaction rate obtained at superatmospheric pressures is a feature of the chlorination reaction which is employed to increase aluminum chloride production rate. Choice of pressure used is governed more by mechanical limitations than by an upper limit inherent to the chemical reaction.