碳包覆Ni-Y纳米材料制备及电磁性能分析  

Preparation and Electromagnetic Property of Carbon Encapsulated Ni-Y Nanomaterials

作　　者：袁霞[1] 安玉良[1] 马腾飞 周金华[1] 郑朝晖[1] YUAN Xia;AN Yu-liang;MA Teng-fei;ZHOU Jin-hua;ZHENG Zhao-hui(College of Material Science and Engineering, Shenyang Ligong University, Shenyang 110159, China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110168

出　　处：《化学与粘合》2018年第4期261-263,280,共4页Chemistry and Adhesion

基　　金：辽宁省自然科学基金项目:(编号:201602653);科技部国际合作项目(编号:KJDR-2013-01L);沈阳理工大学材料加工工程重点学科开放基金项目(编号:20140302)

摘　　要：以淀粉为炭化基质,硝酸镍和硝酸钇为金属颗粒前躯体,在氢气保护下进行控温炭化合成出准球形的碳包覆Ni-Y纳米颗粒,通过SEM、HRTEM、Raman和XRD对产物进行表征。结果表明:所制备的产品呈碳层包覆金属的核壳结构,粒径分布比较窄,平均粒径为50nm左右。通过波导法对所制备的碳包覆Ni纳米材料电磁性能进行分析,采用矢量网络仪测试其在8.2~12.4GHz频率范围内电磁参数,并阐述材料结构与电磁性能之关联。The carbon encapsulated Ni-Y nanomaterials is prepared by controlled carbonization of the mixtures of starch, nickel nitrate and yttrium nitrate in the presence of hydrogen. The results demonstrate that the carbon encapsulated Ni-Y nanomaterials have a core-shell structure with a narrow size distribution about 50nm which is characterized by SEM, HRTEM, Raman and XRD. Furthermore, the electromagnetic property of the carbon encapsulated Ni-Y nanomaterials is analyzed by wave-guide method in the frequency range of 8.2-12.4GHz with vector network analyzer. And the relationship between structure and electromagnetic property of the nanomaterials is explained in detail.

关 键 词：碳包覆纳米材料 制备 电磁性能 催化炭化 

分 类 号：O64[理学—物理化学] Q5[理学—化学]