超音速电弧喷涂制备镍钛涂层的空蚀性能
Cavitation Properties of NiTi Coating Deposited by Supersonic Arc Spraying
张志萍，周勇，张健
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作者单位：西安石油大学材料科学与工程学院
中文关键字：空蚀；NiTi涂层；超音速电弧喷涂
英文关键字：cavitation erosion; NiTi coating; supersonic arc spraying
中文摘要：以1Cr18Ni9Ti为基体，采用超音速电弧喷涂技术制备NiTi涂层，通过扫描电镜、X射线衍射研究了涂层的性能，并在超声波伸缩振动空蚀试验机进行了空蚀试验。结果表明，超音速电弧喷涂NiTi涂层中产生了孔隙和NiO/TiO氧化物相，降低了NiTi的超弹性，使NiTi涂层的抗空蚀性能下降。
英文摘要：NiTi coating was deposited on 1Cr18Ni9Ti stainless steel substance by supersonic arc spraying. The coating properties were studied by SEM, X-Ray diffraction. Caivation erosion test was finished by ultrasonic stretching vibration caviation test machine. The results show that the NiTi coating deposited by supersonic arc spraying generated porosity and NiO/TiO oxidation phase, thus the superelasticity of NiTi is deteriorated. The performance of cavitation erosion resistance of NiTi coating is degraded.