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Preparation and magnetic properties of Ni-P-La coating by electroless plating on silicon substrate

机译：在硅基底上化学镀Ni-P-La涂层的制备及其磁性

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摘要

Ni-P-La coatings were prepared on Si substrate by electroless plating method under different La content, pH value, plating temperature and plating time. The surface morphology, chemical composition, structure and magnetic properties of coatings were observed and determined by scanning electron microscope (SEM), energy dispersive X-ray spectrometry (EDS), X-ray diffractometer (XRD) and vibrating sample magnetometer (VSM). The results showed that Ni-P-La coating is smooth and uniform with a cellular morphology grown in columnar manner. With the increase of La content, pH value and plating time, the thickness and saturation magnetization of coating are increased continuously, but the stability of plating bath is decreased greatly with La content and pH value. Under higher plating temperature, the thickness and saturation magnetization of coatings are obviously enhanced. But too high plating temperature is harmful to the plating bath and coating. The optimum plating conditions for Ni-P-La coating is La2O3 addition of 10 mg L-1, pH value of 5.0, plating temperature of 75 degrees C and plating time of 45 min. The role of La element is to benefit the deposition of Ni element, promote the formation of Ni phase during the annealing process, and thus improve the magnetic properties of Ni-P-La coating. (C) 2016 Elsevier B.V. All rights reserved.
机译：在不同的La含量，pH值，电镀温度和电镀时间下，采用化学镀方法在Si衬底上制备了Ni-P-La涂层。通过扫描电子显微镜（SEM），能量色散X射线能谱仪（EDS），X射线衍射仪（XRD）和振动样品磁强计（VSM）观察并确定了涂层的表面形态，化学成分，结构和磁性能。结果表明，Ni-P-La涂层光滑且均匀，具有以柱状方式生长的细胞形态。随着La含量，pH值和镀时间的增加，涂层的厚度和饱和磁化强度不断增加，但镀液的稳定性却随着La含量和pH值的降低而大大降低。在较高的电镀温度下，涂层的厚度和饱和磁化强度明显提高。但是过高的电镀温度对电镀液和镀层有害。 Ni-P-La涂层的最佳电镀条件是添加10 mg L-1的La2O3，pH值为5.0，电镀温度为75摄氏度，电镀时间为45分钟。 La元素的作用是有利于Ni元素的沉积，在退火过程中促进Ni相的形成，从而改善Ni-P-La涂层的磁性能。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第28期|740-746|共7页
  • 作者

    Gao Yun; Wang Jihui; Yuan Jing; Li Haiqin;

  • 作者单位

    Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Compos & Funct Mat, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Compos & Funct Mat, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Compos & Funct Mat, Tianjin 300072, Peoples R China|Qinghai Univ Nationalities, Coll Phys & Elect Informat Engn, Xining 810007, Qinghai, Peoples R China;

    Qinghai Univ Nationalities, Coll Phys & Elect Informat Engn, Xining 810007, Qinghai, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ni-P-La coating; Electroless plating; Rare earth element; Preparation; Magnetic properties;

    机译：Ni-P-La涂层;化学镀;稀土元素;制备;磁性能;

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