Abstract: An improved aluminum base alloy which provides corrosion protection in fin stock applications includes 0.6-3.0% silicon; 0.2-1.0% by weight iron; up to 0.2% by weight copper; 0.8-2.0% by weight manganese; up to 0.2% by weight magnesium; from about 0.5% by weight zinc to 2.5% by weight zinc; up to 0.2% by weight other constituents; and the balance aluminum. The alloy is especially useful as a sacrificial alloy having improved mechanical strength.

Abstract: An aluminum base material with a hard facing deposit which shows extremely good hot hardness properties when subjected to high operating temperatures. The invention provides a hard facing deposit which shows a hot hardness of at least 100 BHN at 600.degree. F., and has sufficient toughness to resist the formation of cracks when subjected to such operating temperatures. According to the preferred embodiment, the hard facing deposit includes, by weight, about 6% to about 12% silicon, up to about 6% copper, about 2% to about 6% manganese, up to about 3% iron, and about 16% to about 25% nickel. The invention is particularly useful in forming a heavy duty diesel engine piston with a piston ring groove formed in the hard facing deposit.

Abstract: A process for preparation of graphite-containing aluminum alloys includes incorporating graphite particles into an aluminum containing melt. When the graphite particles are incorporated, floating of the graphite particles to the surface of the melt is prevented by the use of certain additive metals. Before the graphite particles are incorporated into the melt, titanium, chromium, zirconium, nickel, vanadium, cobalt, manganese, niobium or phosphorus is incorporated and dispersed into the melt. The produced aluminum alloys are suitable to use as dry frictional contacts such as bearings.

Abstract: A real-time laser recording film having a plastic/dye coating on one side thereof provides improved image sharpness and visual qualities. The film fabrication is compatible with continuous production techniques to provide an economical, high quality film.