TiB2-Ni　composite　powders　were　prepared　by　pressurized　hydrogen　reduction　cladding　with　different　proportion　of　TiB2.　The　coatings　were　then　prepared　by　APS.　The　microstructures　and　the　phase　composition　of　the　powders　as　well　as　the　deposited　coatings　were　analyzed　by　scanning　electron　microscopy　(SEM)　and　X-ray　diffraction　(XRD).　The　coatings　were　tested　using　a　ring-on-disc　tribometer　from　ambient　temperature　to　300　degrees　C.　A　sprayed　Cr3C2-NiCr　coating　was　tested　as　a　reference.　The　morphologies　of　the　worn　surface　of　the　coatings　were　observed　and　analyzed.　It　is　found　that　the　TiB2-Ni　composite　coatings　present　higher　friction　coefficient　than　that　of　the　Cr3C2-NiCr　coating　at　room　temperature　due　to　the　adhesive　wear　mechanism,　whereas　the　main　wear　mechanism　of　Cr3C2-NiCr　coating　is　rupture　and　exfoliation.　However,　at　high　temperature,　the　friction　coefficient　of　the　TiB2-Ni　composite　coating　decreases　as　a　result　of　B2O3　solid　lubricant,　which　alleviates　the　adhesive　wear　on　coatings.　Furthermore,　the　TiB2-Ni　composite　coating　greatly　reduces　the　mass　loss　of　the　boron　cast　iron.