The　development　of　protective　coatings　on　copper　alloy　surfaces　represents　a　critical　research　direction　to　enable　the　widespread　industrial　application　of　copper　alloys.　To　improve　the　corrosion　resistance　and　wear　resistance　of　the　copper　alloy　plates,　a　Ni-Cr-Co-based　multi-principal　element　alloy　coating　was　prepared　via　high-velocity　oxygen　fuel　(HVOF).　Then,　the　microstructure,　corrosion　resistance,　and　wear　resistance　of　the　Ni-Cr-Co　coating　and　the　electroplated　NiCo　coating　were　analyzed　comparatively.　The　research　results　show　that　the　phases　of　the　Ni-Cr-Co　coating　contained　face-centered　cubic　(FCC)　solid　solution,　CrB　and　M23C6.　The　NiCo　coating　exhibited　a　single-phase　FCC　solid　solution　structure.　Compared　to　the　NiCo　coating,　the　corrosion　current　density　of　the　Ni-Cr-Co　coating　was　reduced　by　92.1%　in　NaF　solution.　A　highly　protective　passive　film　was　formed　on　the　Ni-Cr-Co　coating,　and　its　low　ΣCSL　grain　boundary　proportion　reached　as　high　as　25.7%.　Therefore,　the　Ni-Cr-Co　coatings　demonstrated　superior　corrosion　resistance.　The　scratch　wear　coefficient　of　the　Ni-Cr-Co　coating　was　only　51.9%　of　that　of　the　NiCo　coating,　due　to　the　synergistic　strengthening　of　the　matrix　and　hard　second　phase.　This　research　offers　technical　support　and　a　theoretical　basis　foundation　for　the　development　of　coatings　on　copper　alloys　with　excellent　corrosion　resistance　and　wear　resistance.　©　ASM　International　2024.