Process for coating a metallic surface with a wear-resistant material
AssigneeCentro Richerche Fiat S.p.A.
InventorsArmando Belmondo, Massimo Castagna
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Abstract
The surface of a metallic substrate is coated with wear-resistant material by depositing on the surface a layer of a mixture of a coating powder including a metallic carbide with powdery silicon and heating said layer by exposure to a source of high density energy to bring about simultaneous evaporation of said silicon and fusion of said coating powder with bonding to said substrate. A coating of high surface porosity can be obtained. The substrate may be a piston ring for heavy-duty internal combustion engines.
Claims28
A process for coating the surface of a metallic substrate with a wear-resistant material, which comprises depositing on the said surface a uniform layer of an intimate mixture of a coating powder including a metallic carbide with powdery silicon and heating said layer by exposure to a source of high density energy to an extent and for a period sufficient to bring about simultaneously evaporation of said silicon and fusion of said coating powder, and bonding of said layer to said substrate.
Dependencies are inferred from the claim text.