Materials Literature
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与是的 Ti/Ni/Cu/Ni 多重陪衬的使用夹层，碳 / 碳(C/C ) 合成被部分短暂液体阶段结合结合到基于 Ni 的 superalloy GH3044 技术。关节的微观结构和力量上的结合的温度的效果被调查。结果显示出结构的多重夹层 CTi 反应 layer/TiNi 填写了的那个坡度金属间化合的复合 layer/NiCu sosoloid/residual Cu layer/Ni-GH3044 散开层在合成的 C/C 和 GH3044 之间被形成。C/C composite/GH3044 关节的 shear 力量到达了 26.1 的最高的价值 ? MPa 结合的温度什么时候是 1,030 吗？
基于 Perovskite 的材料能广泛地在太空和交通地被使用。Perovskite 锰氧化物 La0.7Sr0.3MnO3 (LSMO ) 薄电影在 LaAlO3 (100 ) 和 Si (100 ) 单身者上被种由帮助聚合物的化学答案免职(PACSD ) 的水晶底层方法。不同底层上的 LSMO 薄电影的电子运输行为，微观结构，和磁致电阻(先生) 被调查。在 LaAlO3 底层上制作的 LSMO 电影的抵抗在 Si 底层上是比那小的。LSMO 的磁场还原剂抵抗在 Si 上拍摄两个并且在宽温度区域老挝人，当绝缘体金属转变温度变到更高的温度时。在在 1 T 的低温度范围的 Si 上的 LSMO 电影的低地的磁致电阻比 LSMO 电影…
Di-block polymer of poly (lactic-co-glycolic acid)–poly (ethylene glycol) (PLGA–PEG) end-capped with capecitabine (CAP) at the hydrophobic domain and folate (FA) at hydrophilic domain were synthesized respectively. The products were extensively studied by nuclear magnetic resonance (1H NMR) and gel permeation chromato…
Nanoindentation was used to study incipient plastic deformation in the vicinity of grain boundaries of different character in Fe-3 mass% Si alloy bicrystals and tricrystal. Pop-in events associated with the grain bound- aries were observed in the load-displacement curves. From the pop-in hardness values, the critical…
To improve the toughness of silk fibroin( SF) films,poly( ethylene glycol-glycerin)( PEGG) was synthesized with ethylene glycol and epichlorohydrin. The SF / PEGG blend films were prepared by casting aqueous solution and their structures were characterized. The PEGG was in liquid state at room temperature so it will n…
The effect of yield strength and elastic modulus of matrix on shear stress of two phases of W fiber reinforced composite under pulse loading was simulated by ANSYS software. The results show that the effect of mechanical properties of matrix on composite should be taken into consideration in designing composite. The m…
Xylan-type hemicelluloses supported ter- pyridine-palladium(II) as a novel biomass-supported catalyst was synthesized and characterized in terms of morphology, composition, and thermal stability. The nano-Pd catalyst was further explored for Suzuki- Miyaura reaction between arylboronic acid and aryl halide under aerob…
The copolymer of polythiophene derivative(P3HT-co-P3AcET) containing alkyl and ester side chain was prepared by FeCl3oxidative coupling copolymerization. The chemical structure of the resulted copolymer was characterized by GPC,1H NMR, et al. The assembling of P3HT-co-P3AcET nanostructures was performed by mixing solv…
有 ca 的一条平均直径的传导性的 microfibers。1.0 m 被准备由在苯胺的 situ 聚合，在哪个 poly (vinylchloride 丙烯腈)(PVC -- 一) 在 electrospinning 被用作细丝材料形成先锋 microfibers 并且带苯胺单体。Fourier 变换红外线(FTIR ) 结果证明 PANi 是成功地在 microfibers 的 polymerized。PVC-AN-PANi microfibers 的形态学被扫描电子显微镜学(SEM ) 观察。微分扫描热量测定的结果显示 PVC-AN-PANi 合成的聚合物经由分子的相互作用形成了。尽管 PVC-AN-PANi microfi…
nanomaterials 打印到目标底层上的转移广泛地在 nanodevices 的制造被使用了，但是充分避免在转移过程介绍的污染仍然是挑战。这里，我们报导一个 metal-film-assisted 方法认识到围单人赛的碳 nanotubes (SWCNT ) 的极端干净的转移调停了由 poly (甲基 methacrylate )(PMMA ) 。PMMA 残余的数量能极大地由于它对金属电影的强壮的物理粘附被减少，导致 SWCNT 和底层的极端干净的表面。这个 metal-film-assisted 转移方法有效、非破坏性、可伸缩。它对 graphene 和另外的 nanostructures 的转移也合适。而且，采用的相对…
以Beta分子筛为硅源通过水热合成法合成了SAPO-11/Beta复合分子筛，采用X射线衍射、N2物理吸脱附、扫描电镜、透视电镜-能谱分析、固体核磁及吡啶红外等方法对单分子筛、复合分子筛和机械混合分子筛的物化性质进行了表征。以正十二烷为模型化合物，在固定床反应器上考察了铂负载型分子筛催化剂的异构化性能。结果表明，复合分子筛的物理化学性质明显不同于单分子筛和机械混合分子筛，其呈现核壳结构， SAPO-11和Beta间存在化学作用，使得复合分子筛具有适宜的B酸分布。在正十二烷异构化反应中，复合分子筛催化剂的异构化性能优于单分子筛催化剂和机械混合分子筛催化剂，多支链异构体收率高。
This work employed small ratio of phosphorescent materials as donor component, and fabricated organic photovoltaic(OPV) cells with structure of MoOx/C60:x% Ir(ppy)3. In this structure, C60 was served as high-ratio acceptor component, Ir(ppy)3(fac-tris(2-phenylpyridine) iridium) as small-ratio donor component, and MoOx…
2 ( N-TiO 2 ) nanoparticles 与暴露{ 001 }方面在 graphene ( GR )上扔了表( N-TiO 2 -001/GR)第一次被综合经由一步舞 solvothermal 用 NH 的合成线路 4 F 作为控制形态学的代理人。试验性的结果例示那 GR 一致地被锐钛矿 N-TiO 盖住 2 nanoparticles (1017 nm ) ，暴露 { 001 } 方面。百分比暴露 { 001 } 在 N-TiO 的方面 2 -001/GR nanocomposites 被计算是 ca。35% 。另外，在吸收边的红移动和在可见轻范围的强壮的吸收由于 Ti-O-C 契约的形成被观察，导致从 3.23…
The J Integral of an elastic-plastic curved crack under quasi-static loads has been mainly worked in the paper,and the J Integral has been calculated as a practical application of a second order perturbation method and theorem of surname KA where the effect of quasi-static applied stresses and normal and shear stresse…
在合成和原子地精确的金 nanoparticles 的全部的结构决心的最近的成功象新应用的发展一样为基本研究提供了令人激动的机会。这些唯一的 nanoparticles 具有分子的纯净并且拥有明确的公式(即，金属原子和 ligands 的特定的数字) ，类似于有机化合物。进宏观的单个晶体的如此的分子地纯的 nanoparticles 的结晶化允许 nanoparticles 的全部的结构的决心(即，金属核心原子的安排和表面 ligands ) 由 X 光检查晶体学。在这篇观点文章，我们在与另外的金属做和 alloying 金牌 nanoparticles 总结最近的努力，包括 Pd，磅， Ag 和 Cu。与原子地精确的金 nano…
微观结构和在退火前后的渗出的 Mg-2.5Zn-0.5Y 合金的机械性质处理被调查。同样渗出的合金展出收益 305.9 MPa 的张力的力量(YTS ) 和 354.8 MPa 的最终的张力的力量(UTS ) ，而延伸仅仅是 4% 。在退火以后，分别地， YTS 和 UTS 减少到 150 MPa 和 240 MPa 并且延伸增加到 28% 。有趣地，甚至在高得多的韧性被完成以后，退火的合金维持可接受的压力水平。这些优秀机械性质在 -Mg DRX 谷物源自动态再结晶(DRX ) 谷物和同类地分布式的 icosahedral quasicrystalline 分阶段执行的好 -Mg (我阶段) 的联合效果。特别地，优异韧性从我阶段和…
A series of linear high molecular weight amorphous polyaryletherketone( PAEK) copolymers with phthalein and fluorene side groups was synthesized on the basis of the polyetherketone with phthalein cardo group( PEK-C). The structures were characterized by FTIR,1H NMR,13 C NMR. Gel permeation chromatography( GPC) data in…
A phosphorus-containing bio-based epoxy resin(EADI) was synthesized from itaconic acid(IA) and 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide(DOPO). As a matrix, its cured epoxy network with methyl hexahydrophthalic anhydride(MHHPA) as the curing agent showed comparable glass-transition temperature and mechanical…
As an excellent chemical fertilizer,Potassium Sulphate(K2SO4)could provide both potassium and sulfur elements for crops.However,it is well known that potassium resource is very poor in China.To understand the Crystallization Kinetics(CK)of K2SO4could be conducive to utilize the limited potassium resource,promote the y…
In this study, the size distribution of atmospheric aerosol in Beijing was monitored by the scanning mobility particle sizer spectrometer and the optical particle sizer. The size of particles in atmospheric aerosol was primarily distributed in the range of less than 1 m. It showed different changes with the mass conce…