超低密度泡沫金材料制备研究
详细信息 查看官网全文
- 英文论文题名：Preparation of Monolithic Foamed gold with ultralow density
- 论文作者：谭秀兰 ; 罗江山
- 英文论文作者：Xiulan Tan ; Jiangshan Luo ; Research Center of Laser Fusion ; CAEP
- 年：2016
- 作者机构：中物院激光聚变研究中心;
- 论文关键词：泡沫金 ; 空心微球 ; 模板沉积-去合金化
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：TG146.31;TB383.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：154k
- 原文格式：D
- 会议级别：全国
摘要
本文采用二氧化硅微球为模板,在微球表面直接粘附金纳米粒子作为化学镀活性部位,化学镀覆一层较厚的金,将模板去除后成功获得了具有空心微球结构的泡沫金样品,并结合去合金化方法,进一步降低金泡沫的密度,建立了简便的模板沉积-去合金化法制备低密度块体泡沫金的新工艺。实验采用SiO_2模板沉积-去合金化方法获得的密度低至0.23g/cm~3的金泡沫,孔隙率高达98.8%。泡沫圆柱体的直径约2.3mm,高度3mm~5mm,内部由单个的金空心球壳组成。球壳层为30nm~70nm的纳米多孔结构。采用ICP-AES测试样品的纯度高达98.63%。EDS能谱分析表明只含有Au,不含有Si和C,碳分析仪测试表明,C含量<50ppm,表明此方法获得了高纯度,低密度的泡沫金样品。为ICF最终靶用泡沫金提供了有利的技术支持。
Noble metallic foams with low density are desirable in high energy-density physical experiments.In this study,Au foams with ultralow density were successfully synthesized from a template-dealloying approach.Microspherical polystyrene(SiO_2) was employed as the sacrificial template.The self-supported hollow spheres were obtained after the template removed.The ultra-low-density gold monoliths with porous structure,cylinder of~2.3mm,density of 0.23g/cm~3,porosity of 98.8%was obtained.
Noble metallic foams with low density are desirable in high energy-density physical experiments.In this study,Au foams with ultralow density were successfully synthesized from a template-dealloying approach.Microspherical polystyrene(SiO_2) was employed as the sacrificial template.The self-supported hollow spheres were obtained after the template removed.The ultra-low-density gold monoliths with porous structure,cylinder of~2.3mm,density of 0.23g/cm~3,porosity of 98.8%was obtained.
引文
[1]Tan Xiulan,Niu Gao,Li Kai,et al.Preparation of Monolithic Foamed Gold by Seed-Mediated Growth.Rare Metal Materials and Engineering,2012,41(1):169-172.
[2]Tan Xiulan,Niu Gao,Li Kai,,et al.Preparation of Monolithic Foamed gold by template deposit-dealloying method.Rare Metal Materials and Engineering,2013,42(1):162-165
[2]Tan Xiulan,Niu Gao,Li Kai,,et al.Preparation of Monolithic Foamed gold by template deposit-dealloying method.Rare Metal Materials and Engineering,2013,42(1):162-165