Study on High Temperature Oxidation Resistance of CeO_2 Nano-meter Powder Reinforced Ni-Based Alloy Coating by Laser Cladding
CeO2nano-meter powder reinforced Ni-Based alloy coating was prepared by laser cladding on the surface of GH4037 alloy by adding amount of CeO2nano-meter powder and NiCoCrAlY alloy powder. Microstructure of layer cladding was analyzed, and high temperature oxidation resistance under 1070 ℃ was tested. The results show that microstructure of Ni-Based alloy laser cladding obviously is refined by adding appropriate amount of CeO2nano-meter powder. It can also inhibit crack formation of the interface region. High temperature oxidation resistance of the laser cladding is improved significantly.