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fabricated through a reactive synthesis of Fe and Sielementalpowder mixtures.The effects of Sicontents on the pore structure of porous Fe-Sialloy were investigated in detail.The results showed that the open... pore structure parameter including the open porosity,gas permeability,maximum pore size obeyed the HagenPoiseuille formula with the constant G=0.035 m(-1Pa-1s-1 for the reactively synthesized porous Fe......
), 2014, 193: 273-279. [6] NA Hui-bing, ZHANG Xian-fa, DENG Zhao-peng, XU Ying-ming, HUO Li-hua, GAO Shan. Large-scale synthesis of hierarchically porous ZnO hollow tubule for fast response to ppb... rutile structure are 53-170 nm in diameter and 10 μm-1 mm in length. The porous ceramic substrate not only increases the nucleation sites of the SNWs, but also enhances the sticking probability between......
One step method of structure engineering porous graphitic carbon nitride for efficient visible-light photocatalytic reduction of Cr(Ⅵ)Xueru Chen1,Yin Zhang1,Dashui Yuan1,Wu Huang1,Jing Ding1,Hui..., Nanjing Tech University2. Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University摘 要:Porous g-C3......
Preparation of Porous Mullite Composite by Microwave Sintering范冰冰1,2,张锐1,31. School of Materials Science and Engineering, Zhengzhou University2. Physical Engineering College, Zhengzhou University3. Zhengzhou Aeronautical Institute of Industry Management摘 要:Microwave sintering method was carried out to prepare porous mullite composite. An insulation......
4000 Hz, and the sound absorption coefficient reaches up to 0.9. Key words: porous material; foamed metal; foamed titanium; characteristic; netlike structure 泡沫金属是一种轻质结构的多孔材料,同时具有消音降噪,吸能减震,隔热阻火,电磁屏蔽等功...其第一共振频率出现在4000 Hz左右,此时试样的吸声系数达到约0.9. 关键词:多孔材料;泡沫金属;泡沫钛;特性;网状结构 中图分类号:TG146 文献标志码:A Characteristic of highly porous foamed......
Synthesis of Non-oxide Porous Ceramics Using Random Copolymers as PrecursorsXiaoqian Wang1,2,Kewei Wang1,2,Jie Kong3,Yiguang Wang1,2,Linan An41. State Key Laboratory of Solidification Processing...="ChDivSummary">In this paper,we reported a novel method for synthesis of non-oxide porous ceramics by using random copolymers as precursors.A silazane oligomer and styrene monomer were used......
nanostructures suffer from easy aggregation and loss of active electrochemical surface due to their high surface energy. In comparison, hierarchically (porous) nanoarchitectures exhibit some unique... spheres with diameters of about 500 nm. Each spherical particle is comprised of many nanosheets, presenting a hierarchically porous architecture. The formation of such hierarchical microspheres can......
structure, the crystallization and the percentage of crystallization of the as-produced porous BMG. The results suggested that the formation of porous structure by su- perplastic forming process is feasible...Porous bulk metallic glass fabricated by powder hot pressingKeqiang Qiu1), Bo Yu2), and Yinglei Ren1) 1) School of Materials Science and Engineering, Shenyang University of Technology, Shenyang......
多孔结构MgO表面化学镀Ni层的制备与表征李均明1,薛晓楠1,蔡辉2,蒋百灵1(1.陕西省西安市西安理工大学材料科学与工程学院2.西安交通大学 理学院 物质非平衡合成与调控教育部重点实验室)摘 要:利用多孔结构的表面活性,采用以硫酸镍(NiSO4·7H2O)为主盐,次亚磷酸钠(NaH2PO2·H2O)为还原剂且无其它特殊组分的常用化学镀Ni溶液,经无敏化活化预处理直接在微弧氧化形成的多孔MgO薄膜表面制备出化学镀Ni层,并对Ni层的相组成,显微结构,导电性和耐蚀性进行了表征.结果表明:平均厚度约5μm的化学镀N......
Structure and visible photocatalytic activity of nitrogen-doped meso-porous TiO2 layer on Ti6Al4V substrate by plasma-based ion implantation LI Jin-long(李金龙)1, 2, 3, MA Xin-xin(马欣新)1, SUN Ming-ren.... By removing the near surface compact layer using argon ion sputtering, the meso-porous structure was exposed on surfaces. Nitrogen doping enlarges the photo-response region of visible light. Moreover......