Abstract
There is a need in different industry sectors to improve the performance of material surface under corrosive environments, which cannot be fulfilled by conventional surface modifications and coatings. NiCrMoNb alloy is nickel alloy commonly used as coating in corrosive media at high temperatures. The aim of this work is to produce nickel alloy nanocomposite coatings on steel by laser cladding. They are obtained by laser melting blown powder on the steel surface. The powder precursor is obtained by mechanical milling of a NiCrMoNb alloy micropowder (20-63 μm) with yttria nanopowder (10-30 nm). A comparison between conventional nickel alloy laser cladded coating and nickel alloy with nanoparticles laser cladded coatings, regarding their microstructure, mechanical properties (hardness, wear resistance) and corrosion behavior, is established.
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