摘要
以NiCr合金为电极，在TA2表面通过电火花沉积技术制备了NiCr合金强化涂层，用显微硬度计考察了涂层的断面显微硬度．并通过扫描电镜（SEM）、能谱（EDS）、X射线衍射（XRD）等表征了涂层的微观结构。结果表明：涂层主要由NiTi2，Cr4Ni15Ti,Cr1.75Ni0.25Ti及NiTi等相组成，涂层厚度约为40-70μm，涂层与基体形成了良好的冶金结合。涂层显微硬度高达HV620，涂层具有较好的耐磨性。
NiCr coating on pure titannium(TA2) was deposited by electrospark deposition using the NiCr electrode,the microhardness had been studied by micro-hardness tester,the microstructure had been studied by scaning electron microscopy(SEM),energy dispersion spectrum(EDS) and X-ray diffraction(XRD).The results showed that the coating contained several phases like NiTi2,Cr4Nil5 Ti,Crl.75 NiO.25Ti and NiTi.The thickness of the coating was about 40 ~70 μm,good metallurgical combination between coating and substrate appeared.The microhardness of the coating had reached up to HV620,the coating had good wear resistance.
出处
《焊接技术》
2015年第4期10-12,27,共3页
Welding Technology
基金
国家自然科学基金(U1294520)
河南省杰出青年科学基金(074100510011)
河南科技大学青年基金项目(2006QN049)
洛阳市科技攻关项目
河南科技大学大学生研究训练计划(SRTP)项目(2011067)
