Thermal spray method for coating cylinder bores for internal combustion engines
AssigneeThe Perkin-Elmer Corporation
InventorsMitchel R. Dorfman, Jorge E. Garcia, Burton A. Kushner
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Abstract
A tenacious wear resistant coating is applied with a high velocity oxygen-fuel thermal spray gun using a composite powder of aluminum and an iron base metal. The metal may be iron-chromium, iron-molybdenum, cast iron or a combination. A particular combination is a blend of a first powder and a second powder, the first powder consisting of a composite of aluminum subparticles and iron-molybdenum alloy subparticles, and the second powder consisting of a composite of aluminum subparticles and cast iron subparticles. An internal combustion engine block has such a coating applied to the cylinder walls.
Claims4
A composite thermal spray powder useful for high velocity thermal spraying inside cylinder walls, consisting essentially of aluminum and an iron base metal, wherein the iron base metal consists of cast iron and iron-molybdenum alloy, the aluminum being between 1% and 10% by weight of the total of the aluminum and the iron base metal, and the iron-molybdenum alloy being between about 30% and 70% of the iron base metal.
Dependencies are inferred from the claim text.