单一稀土镧在不同基底上的电沉积及其性能的研究

研究在低温熔融盐体系中于不同基底上电沉积单一稀土金属镧（La）。经X-射线能谱仪测定，在镍片基底上沉积的La的质量分数为100％，铜片基底上沉积的La质量分数为72．84％；在镍铁合金灯丝上沉积得到La-Ni合金薄膜，其中La的质量分数为50．02％，Ni的质量分数为2．48％。经扫描电子显微镜观察，所得的沉积膜为均匀、光滑、致密的黑色沉积薄膜。经X-射线衍射仪分析，镧在不同基底上沉积所得的沉积膜为不同晶型，以镍片为基底得到的单质镧为α-六方晶型；以铜片为基底得到的单质镧为面心立方晶；均与基底晶型相匹配。在镍铁合金灯丝上电沉积所得的La-Ni合金薄膜致密均匀，在无水乙醇中久浸而不脱落，并呈现强磁性。

Preparation of Single Rare Earth Metal La Film on Different Substrates by Electrodeposition and Its Characterization

The electrodeposited La on different substrates in low-temperature molten salts was studied.The results of X-ray energy dispersive spectroscopy(EDS) showed that the content of deposited La films on Ni substrate was 100 wt%;the content of deposited La film on Cu substrate was 72.84 wt%.When La-Ni alloy film was deposited on Ni-Fe alloy filament,the content of La was 50.02 wt%,Ni was 2.48 wt%.The photographs of scanning electron microscopy(SEM) revealed that the deposition film was uniform,smooth,dense and black.The results of X-ray diffraction(XRD) showed that the different crystals were obtained for lanthanum on different sedimentary basement membrane deposition.La film on the Ni substrate was α-hexagonal;La film on the Cu substrate was face-centered cubic crystal,which were matched with crystalline substrate.La-Ni alloy film deposited on Ni-Fe alloy filament was uniform and dense,and did not get off in absolute ethyl alcohol,and showed strong magnetic performance.