CAS OpenIR  > 多相复杂系统国家重点实验室
Porous silica ceramics with closed-cell structure prepared by inactive hollow spheres for heat insulation
Sun, Zhiqiang1,2; Lu, Chen1,2; Fan, Junmei1; Yuan, Fangli1
2016-03-25
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
卷号662期号:MAR页码:157-164
摘要Highly porous silica ceramics (PSCs) with closed-cell structure are fabricated via sintering of randomly packed hollow SiO2 spheres (HSSs), and the influences of sintering parameters, additives and physical features of HSSs on the structure and performance of prepared PSCs are discussed. The results show that the hollow structure of SiO2 spheres is reserved during the sintering process due to its low-activated shells and the sintered necks are finely formed among the hollow spheres, which results in both high porosity and superior strength of final products and thus meets the needs of heat shielding materials. In addition, the optimized PSCs are synthesized with sintering temperature of 1200-1250 degrees C and additive of 4 wt.% H3BO3 combining 6 wt.% Al2O3, and the increase of closed porosity of PSCs brings in the enhanced thermal shielding effect while the strength degrades. Furthermore, the structure analysis reveals that decreased cristobalite phase in the PSCs reduces the glass viscosity and increases the packing density of HSSs, which also prefers to enhance the mechanical strength and thermal insulation. As a result, thermal conductivity of about 0.102-0.218 W/(m.k) and compressive strength of 3.2-14 MPa are obtained in our synthesized products. (C) 2015 Elsevier B.V. All rights reserved.
关键词Porous Sio2 Ceramics Hollow Structure Heat Insulation Mechanical Property
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jallcom.2015.12.061
收录类别SCI
语种英语
关键词[WOS]FLY-ASH ; THERMAL-CONDUCTIVITY ; FOAMS ; FABRICATION ; PHASE ; MICROSTRUCTURE ; CONTAMINATION ; PLASMA ; CLAY
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China(51574211)
WOS记录号WOS:000368336200021
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20271
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Sun, Zhiqiang,Lu, Chen,Fan, Junmei,et al. Porous silica ceramics with closed-cell structure prepared by inactive hollow spheres for heat insulation[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,662(MAR):157-164.
APA Sun, Zhiqiang,Lu, Chen,Fan, Junmei,&Yuan, Fangli.(2016).Porous silica ceramics with closed-cell structure prepared by inactive hollow spheres for heat insulation.JOURNAL OF ALLOYS AND COMPOUNDS,662(MAR),157-164.
MLA Sun, Zhiqiang,et al."Porous silica ceramics with closed-cell structure prepared by inactive hollow spheres for heat insulation".JOURNAL OF ALLOYS AND COMPOUNDS 662.MAR(2016):157-164.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Porous silica cerami(2963KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sun, Zhiqiang]的文章
[Lu, Chen]的文章
[Fan, Junmei]的文章
百度学术
百度学术中相似的文章
[Sun, Zhiqiang]的文章
[Lu, Chen]的文章
[Fan, Junmei]的文章
必应学术
必应学术中相似的文章
[Sun, Zhiqiang]的文章
[Lu, Chen]的文章
[Fan, Junmei]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Porous silica ceramics with closed-cell structure prepared by inactive hollow spheres for heat insulation.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。