本文主要研究内容
作者何煜（2019）在《Ce2Co17基体系合金制备及吸波性能研究》一文中研究指出：电磁波吸收材料作为当前解决电磁污染问题的最有效途径之一,目前研究中更是追求高吸收强度、低匹配厚度、宽吸收频带。因此,在本文中利用真空电弧熔炼、行星式球磨等方法制备片状Ce-Co合金体系吸波微粉,研究轻稀土、重稀土及磁性元素Ni的添加对合金电磁参数、磁性能、微波吸收性能的影响。片状LaxCe2-xCo17（x=0,0.2,0.3,0.4,0.5）合金微粉的最小反射损耗值能达到-42.29dB,而对应的La的添加量为0.4,匹配厚度仅为1.8 mm,另有效频宽也达到2.24 GHz,在C波段可以获得相当优异的电磁波吸收强度和有效频宽。在厚度为1.22.4 mm范围时,La0.4Ce1.6Co17合金粉末的最小反射损耗值均小于-18 dB（吸收率为98.41%）,厚度为1.2 mm时有效频宽达到最大值3.52 GHz。NdxCe2-xCo17（x=0,0.2,0.3,0.4）合金微粉球磨后的颗粒平均尺寸随着Nd的增加而增大。Nd0.2Ce1.8Co17合金在6.88 GHz处最小反射损耗值为-42.84 dB,而对应的匹配厚度为2.0 mm,在C波段Nd0.2Ce1.8Co17合金具有较好的吸波应用潜力。在1.23.0 mm范围内,随着厚度的减小,Nd0.2Ce1.8Co17合金的有效带宽扩大了约5.8倍。另外,Nd0.4Ce1.6Co17合金在3.76 GHz处最小反射损耗为-24.58 dB,在S波段Nd0.4Ce1.6Co17合金具有较好应用前景。DyxCe2-xCo17（x=0,0.1,0.2,0.4）合金粉末随着Dy元素逐渐增多,样品平均颗粒大小均呈减小的趋势。Dy0.2Ce1.8Co17合金粉末最小反射损耗值在厚度、频率分别为1.8mm、8 GHz时可以达到-39.16 dB,并且RL<-10 dB的频带宽度能达2.64 GHz。Dy0.2Ce1.8Co17合金粉末匹配厚度为1.6 mm时,有效频宽达到最大为3.04 GHz,最小反射损耗值高达-40.28 dB。当d=2.8 mm时,Dy0.2Ce1.8Co17粉末在4.88 GHz处最小反射损耗值也可以达到-12.62 dB（吸收率为94.53%）。HoxCe2-xCo17（x=0,0.2,0.6,1.0）合金微粉最小反射峰对应的频率在Ho含量逐渐增加的情况下向低频偏移。Ho0.6Ce1.4Co17合金粉末最小反射损耗值在6.48 GHz时可达-42.99 dB,而且有效频宽为1.6 GHz,即在C波段的吸收强度可达很高,有效频宽也相对较好。通过对不同厚度下Ho0.6Ce1.4Co17合金粉末的微波吸收性能进行分析后发现在3.6 GHz处最小反射损耗值约-12.74 dB（吸收率可达94.68%）,该合金微粉也可以考虑应用于S波段。Ce2Co17-xNix（x=0,0.4,0.8,1.2,1.6）粉末的相成分主要为Ce2Co17相,而且合金粉末的平均颗粒大小随着Ni含量的增加而逐渐增大。Ce2Co17-x7-x Nix（x=0,0.4,0.8,1.2,1.6）合金粉末的饱和磁化强度从24.1 emu/g降到了19.7 emu/g。匹配厚度同为1.8 mm,Ni添加量达0.4时,Ce2Co16.6Ni0.4合金粉末最小反射损耗值在8.32 GHz时可达-30.57 dB,有效频宽达约2.56 GHz。通过不同厚度对比亦发现在X波段Ce2Co16.6Ni0.4合金粉末最小反射损耗值可达-44.29 dB,匹配厚度仅为1.6 mm。但是当厚度范围在2.02.6 mm内,C波段Ce2Co15.4Ni1.6合金粉末相比于Ce2Co16.6Ni0.4合金粉末具有更优的电磁波吸收强度。在吸波涂层厚度为2.2 mm时,Ce2Co15.4Ni1.6合金在5.44 GHz处最小反射损耗能达-31.91 dB。质量比为50:50时,Ce2Co16.6Ni0.4/羰基铁粉复合材料在1.8 mm时的吸收强度相对于Ce2Co16.6Ni0.4增强,最小反射损耗值提至-38.06 dB,有效频宽从2.56 GHz增至3.68 GHz。当厚度为1.6 mm时,有效频宽可以拓宽至4.64 GHz,而且最小反射损耗值约-30.33 dB。
Abstract
dian ci bo xi shou cai liao zuo wei dang qian jie jue dian ci wu ran wen ti de zui you xiao tu jing zhi yi ,mu qian yan jiu zhong geng shi zhui qiu gao xi shou jiang du 、di pi pei hou du 、kuan xi shou pin dai 。yin ci ,zai ben wen zhong li yong zhen kong dian hu rong lian 、hang xing shi qiu mo deng fang fa zhi bei pian zhuang Ce-Coge jin ti ji xi bo wei fen ,yan jiu qing xi tu 、chong xi tu ji ci xing yuan su Nide tian jia dui ge jin dian ci can shu 、ci xing neng 、wei bo xi shou xing neng de ying xiang 。pian zhuang LaxCe2-xCo17（x=0,0.2,0.3,0.4,0.5）ge jin wei fen de zui xiao fan she sun hao zhi neng da dao -42.29dB,er dui ying de Lade tian jia liang wei 0.4,pi pei hou du jin wei 1.8 mm,ling you xiao pin kuan ye da dao 2.24 GHz,zai Cbo duan ke yi huo de xiang dang you yi de dian ci bo xi shou jiang du he you xiao pin kuan 。zai hou du wei 1.22.4 mmfan wei shi ,La0.4Ce1.6Co17ge jin fen mo de zui xiao fan she sun hao zhi jun xiao yu -18 dB（xi shou lv wei 98.41%）,hou du wei 1.2 mmshi you xiao pin kuan da dao zui da zhi 3.52 GHz。NdxCe2-xCo17（x=0,0.2,0.3,0.4）ge jin wei fen qiu mo hou de ke li ping jun che cun sui zhao Ndde zeng jia er zeng da 。Nd0.2Ce1.8Co17ge jin zai 6.88 GHzchu zui xiao fan she sun hao zhi wei -42.84 dB,er dui ying de pi pei hou du wei 2.0 mm,zai Cbo duan Nd0.2Ce1.8Co17ge jin ju you jiao hao de xi bo ying yong qian li 。zai 1.23.0 mmfan wei nei ,sui zhao hou du de jian xiao ,Nd0.2Ce1.8Co17ge jin de you xiao dai kuan kuo da le yao 5.8bei 。ling wai ,Nd0.4Ce1.6Co17ge jin zai 3.76 GHzchu zui xiao fan she sun hao wei -24.58 dB,zai Sbo duan Nd0.4Ce1.6Co17ge jin ju you jiao hao ying yong qian jing 。DyxCe2-xCo17（x=0,0.1,0.2,0.4）ge jin fen mo sui zhao Dyyuan su zhu jian zeng duo ,yang pin ping jun ke li da xiao jun cheng jian xiao de qu shi 。Dy0.2Ce1.8Co17ge jin fen mo zui xiao fan she sun hao zhi zai hou du 、pin lv fen bie wei 1.8mm、8 GHzshi ke yi da dao -39.16 dB,bing ju RL<-10 dBde pin dai kuan du neng da 2.64 GHz。Dy0.2Ce1.8Co17ge jin fen mo pi pei hou du wei 1.6 mmshi ,you xiao pin kuan da dao zui da wei 3.04 GHz,zui xiao fan she sun hao zhi gao da -40.28 dB。dang d=2.8 mmshi ,Dy0.2Ce1.8Co17fen mo zai 4.88 GHzchu zui xiao fan she sun hao zhi ye ke yi da dao -12.62 dB（xi shou lv wei 94.53%）。HoxCe2-xCo17（x=0,0.2,0.6,1.0）ge jin wei fen zui xiao fan she feng dui ying de pin lv zai Hohan liang zhu jian zeng jia de qing kuang xia xiang di pin pian yi 。Ho0.6Ce1.4Co17ge jin fen mo zui xiao fan she sun hao zhi zai 6.48 GHzshi ke da -42.99 dB,er ju you xiao pin kuan wei 1.6 GHz,ji zai Cbo duan de xi shou jiang du ke da hen gao ,you xiao pin kuan ye xiang dui jiao hao 。tong guo dui bu tong hou du xia Ho0.6Ce1.4Co17ge jin fen mo de wei bo xi shou xing neng jin hang fen xi hou fa xian zai 3.6 GHzchu zui xiao fan she sun hao zhi yao -12.74 dB（xi shou lv ke da 94.68%）,gai ge jin wei fen ye ke yi kao lv ying yong yu Sbo duan 。Ce2Co17-xNix（x=0,0.4,0.8,1.2,1.6）fen mo de xiang cheng fen zhu yao wei Ce2Co17xiang ,er ju ge jin fen mo de ping jun ke li da xiao sui zhao Nihan liang de zeng jia er zhu jian zeng da 。Ce2Co17-x7-x Nix（x=0,0.4,0.8,1.2,1.6）ge jin fen mo de bao he ci hua jiang du cong 24.1 emu/gjiang dao le 19.7 emu/g。pi pei hou du tong wei 1.8 mm,Nitian jia liang da 0.4shi ,Ce2Co16.6Ni0.4ge jin fen mo zui xiao fan she sun hao zhi zai 8.32 GHzshi ke da -30.57 dB,you xiao pin kuan da yao 2.56 GHz。tong guo bu tong hou du dui bi yi fa xian zai Xbo duan Ce2Co16.6Ni0.4ge jin fen mo zui xiao fan she sun hao zhi ke da -44.29 dB,pi pei hou du jin wei 1.6 mm。dan shi dang hou du fan wei zai 2.02.6 mmnei ,Cbo duan Ce2Co15.4Ni1.6ge jin fen mo xiang bi yu Ce2Co16.6Ni0.4ge jin fen mo ju you geng you de dian ci bo xi shou jiang du 。zai xi bo tu ceng hou du wei 2.2 mmshi ,Ce2Co15.4Ni1.6ge jin zai 5.44 GHzchu zui xiao fan she sun hao neng da -31.91 dB。zhi liang bi wei 50:50shi ,Ce2Co16.6Ni0.4/tang ji tie fen fu ge cai liao zai 1.8 mmshi de xi shou jiang du xiang dui yu Ce2Co16.6Ni0.4zeng jiang ,zui xiao fan she sun hao zhi di zhi -38.06 dB,you xiao pin kuan cong 2.56 GHzzeng zhi 3.68 GHz。dang hou du wei 1.6 mmshi ,you xiao pin kuan ke yi ta kuan zhi 4.64 GHz,er ju zui xiao fan she sun hao zhi yao -30.33 dB。
论文参考文献
论文详细介绍
论文作者分别是来自桂林电子科技大学的何煜，发表于刊物桂林电子科技大学2019-10-15论文，是一篇关于基合金体系论文,微波吸收性能论文,磁性能论文,电磁参数论文,反射损耗值论文,桂林电子科技大学2019-10-15论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自桂林电子科技大学2019-10-15论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：基合金体系论文; 微波吸收性能论文; 磁性能论文; 电磁参数论文; 反射损耗值论文; 桂林电子科技大学2019-10-15论文;