高岭土表面镀覆Co-P层及其微波吸收性能研究

发布时间：2018-02-21 00:54

  本文关键词： 高岭土 化学镀 Co-P镀层 电磁参数 微波吸收　出处：《稀有金属材料与工程》2017年08期 　论文类型：期刊论文

【摘要】：选用产于茂名和苏州的天然高岭土为原料,通过改性处理和化学镀工艺制备了高岭土复合物MK/Co-P和SK/Co-P,对比分析其显微结构、磁性和微波吸收性能。结果表明:Co-P镀层均为单相密排六方结构,在MK/Co-P中均匀沉积在高岭土片层表面,Co和P含量(质量分数)分别为36.62%和4.41%。而在SK/Co-P中镀层对高岭土微米级团簇包覆完整,Co和P含量显著下降。与SK/Co-P相比,MK/Co-P的饱和磁化强度和矫顽力较高,介电常数和磁导率大幅上升,其匹配厚度在2.0~3.0 mm的有效吸波频带(RL≤ 20 d B)覆盖4.7~8.2 GHz,反射损耗最大值为 27.32 d B,应用前景较好。
[Abstract]:Using natural kaolin produced in Maoming and Suzhou as raw materials, Kaolin complex MK/Co-P and SKP / Co-P were prepared by modification and electroless plating, and their microstructure was compared and analyzed. Magnetic properties and microwave absorption properties. The results show that both of the W Co-P coatings have single-phase dense hexagonal structure. The content (mass fraction) of Co and P on the surface of kaolin lamellae was 36.62% and 4.41 in MK/Co-P, respectively. However, the content of Co and P in SK/Co-P coating on micron clusters of kaolin decreased significantly. Compared with SK/Co-P, the saturation magnetic field of MK / Co-P was significantly decreased. Higher chemical strength and coercivity, The permittivity and permeability increase greatly, and the effective absorbing band (RL 鈮，

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