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浏览/检索结果: 共15条，第1-10条 帮助

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Quantifying the contributions of structural factors on runoff water quality from green roofs and optimizing assembled combinations using Taguchi method 期刊论文  OAI收割
JOURNAL OF HYDROLOGY, 2021, 卷号: 593, 页码: -
作者:  Liu, Wen;  Engel, Bernard A.;  Chen, Weiping;  Wei, Wei;  Wang, Yu
  |  收藏  |  浏览/下载：13/0  |  提交时间：2021/12/21
Size effect investigation of indentation response of stifffilm/compliant substrate composite structure 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2020, 卷号: 193, 页码: 106-116
作者:  Liu, YW;  Ma HS(马寒松);  Wei YG(魏悦广);  Chen, P;  Chen P
  |  收藏  |  浏览/下载：115/0  |  提交时间：2020/06/22
CoFe2O4 coated carbon fiber paper fabricated via a spray pyrolysis method for trapping lithium polysulfide in Li-S batteries 期刊论文  OAI收割
APPLIED SURFACE SCIENCE, 2019, 卷号: 478, 页码: 341-346
作者:  Feng, Xiaohua;  Wang, Qian;  Li, Rongrong;  Li, Hua
  |  收藏  |  浏览/下载：34/0  |  提交时间：2019/12/18
Thermal conductivity enhancement of phase change materials with 3D porous diamond foam for thermal energy storage 期刊论文  OAI收割
APPLIED ENERGY, 2019, 卷号: 233, 页码: 208-219
作者:  Zhang, Long;  Zhou, Kechao;  Wei, Quiping;  Ma, Li;  Ye, Wentao
  |  收藏  |  浏览/下载：41/0  |  提交时间：2019/12/18
实践十号卫星有效载荷胶体材料箱地基实验 期刊论文  OAI收割
空间科学学报, 2016, 卷号: 36, 期号: 4, 页码: 459-464
作者:  李伟斌;  蓝鼎;  王育人
收藏  |  浏览/下载：38/0  |  提交时间：2016/12/16
Tunable Reactive Wetting of Sn on Microporous Cu Layer 期刊论文  OAI收割
Journal of Materials Science & Technology, 2012, 卷号: 28, 期号: 4, 页码: 379-384
Q. Q. Lai; L. Zhang; C. Chen; J. K. Shang
收藏  |  浏览/下载：24/0  |  提交时间：2013/02/05
Research on the micro-crack density of a chromium coating/steel substrate with and without laser pre-quenching treatment 会议论文  OAI收割
2011 1st International Conference on High Performance Structures and Materials Engineering, ICHPSM 2011, Beijing, China, MAY 05-06, 2011
作者:  Yang BQ(杨班权);  Chen GN(陈光南);  Chen XJ(陈学军)
收藏  |  浏览/下载：31/0  |  提交时间：2013/02/26
Manufacture of 1.2m reaction bonded silicon carbide mirror blank CFID (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, April 26, 2010 - April 29, 2010, Dalian, China
作者:  Zhang G.;  Zhang G.;  Zhang G.
收藏  |  浏览/下载：37/0  |  提交时间：2013/03/25
Silicon carbide (SiC) is a new type candidate material for large-scale lightweight space mirror. Its low thermal distortion  high stiffness  fine optical quality and dimensional stability  make SiC an ideal material for large space born telescope. Since ten years Changchun institute optics  fine mechanics and physics (CIOMP) has developed reaction bonded SiC (RB-SiC) technology for space application  and can fabricate RB-SiC mirror with scale less than 1.0 meter for telescope. The green body is prepared with gel-casting method which is an attractive new ceramic forming process for making high-quality  complex-shaped ceramic parts. And then unmolding  drying  binder burning out  reacting bonded  the RB-SiC can be obtained. But with the development of space-born or ground telescope  the scale of primary mirror has exceeded 1.0 meter. So CIOMP has developed an assembly technique which called novel reaction-formed joint technology for larger RB-SiC mirror blank. The steps include joining of green bodies with mixture comprised of SiC particles and phenolic resin etc  firing  machining and sintering. Joining the 1.2 meter RB-SiC mirror blank by the novel reaction-formed joint technology. And testing the welding layer's performance  the results show that the thickness of 54-77m  the microstructure and thermal property can be comparable to the substrate and the mechanical property are excellent in bending strength of 307MPa. 2010 Copyright SPIE - The International Society for Optical Engineering.  
IAD-Si coatings on RB-SiC space mirrors for ultra-smooth surfaces (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  Xu L.;  Wang X.;  Wang X.;  Wang X.;  Zhang F.
收藏  |  浏览/下载：37/0  |  提交时间：2013/03/25
To eliminate surface limitation caused by Silicon impurity in RB-SiC space mirrors  a relatively thick Si film is deposited on well finished RB-SiC substrate by a new process-ion assisted depositing (IAD) to provide a better polishable surface. Testing results of IAD-Si properties are provided  showing that the amorphous film has great thermal shock resistance. Then  polishing experiments on 100.5m thick IAD-Si layers are accomplished focusing on smoother surface. Surface figure and micro-roughness of the coating after polished reach 0.026 RMS (=0.6328nm) and less than 0.5nm RMS respectively. Moreover  reflectivity of IAD-Si polished surface with reflective films increases higher than 4.5% than that of RB-SiC in 360-1100nm. High reflectivity and desirable thermal property make IAD-Si an attractive coating material for RB-SiC space mirrors. 2009 SPIE.  
Fabrication technique of large-scale lightweight SiC space mirror (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  Zhang G.;  Zhang G.;  Zhang G.
收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25
Silicon carbide (SiC) is a new type candidate material for large-scale lightweight space mirror. Its low thermal distortion  high stiffness  high optical quality  and its dimensional stability are better than other traditional optical substrate materials such as ULE  Zerodure  Beryllium (Be) and so on. In this paper  the lightweight silicon carbide space mirror blank was fabricated by reaction sintering. As a space born mirror material  silicon carbide must be an optical grade ceramic. So we prepared the silicon carbide green body with gel-casting method. Then some carbon materials were supplemented into the green body which will bring reaction-sintering with silicon in a vacuum furnace during 1500-1600C  ultimately the reaction bonded silicon carbide was made. The diameter of SiC space mirror blank we have made is 680mm. If expanding the size of the vacuum furnace  bigger mirror blank can be obtained. The test results show that the mechanical and thermal properties of RB-SiC are excellent with bending strength of 350MPa  fracture toughness of 4.1 MPa·m1/2 and coefficient of thermal expansion(CET) of 2.6710-6/K. The surface roughness(RMS) could be better than 3nm.