Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The relationship between microstructure and mechanical properties of gas metal arc weld metal with strength over890MPa is discussed.The microstructure of the weld metals is characterized with OM,SEM,TEM and EBSD.The microstructure of the weld metals is mainly composed of martensite and bainite.Experimental results sho…
在现在的工作， 6082 艾尔合金被卷了到 40% 和 70% 厚度减小在低温实验法并且为改进在的房间温度机械并且破裂坚韧性质。所有 cryorolled 样品在不同温度受到老化，即， 140， 160，和 190 敢 ? 敤楬敶敲 ? 景Τ
In this work,the graphene-ZnO nanocomposite was successfully synthesized through a one-step solvothermal approach,using ethylene glycol as the solvent and reducing agent.The ZnO particles could be attached to the surfaces and edges of graphene sheet.The electrochemical performance of the nanocomposite was investigated…
三维的分子的动力学(MD ) 模拟被执行与弯曲的不同尖端半径和单个水晶铜的表面学习在钻石点之间的接触和滑动过程。材料变丑，磨损机制，格子缺点，接触过程的力量，和滑动磨擦过程被调查。模拟结果证明接触力量，脱臼，和叠的差错背叛，与增加接触深度在接触过程期间增加或付小费给弯曲的半径。沿着 $\left 的脱臼发射极[{ 10 \bar { 1 }}\right ]$ 并且 $\left [{\bar { 1 } 0 \bar { 1 }}\right ]$ 方向然后一个 glide 乐队被形成。弯曲的更大的尖端半径导致一条更大的沟和更多的材料变丑，这也被发现。有增加弯曲的尖端半径的正常力量和磨擦增加，而是磨擦的系数减少。叠的差错与增加弯…
The effects of catalyst physicochemical prop- erty and operation condition on toluene destruction over Pd/Z-x (Z: ZSM-5; x: nSi/Al) were extensively studied. The support acidity has important impact on active phase dis- persion and reaction product desorption. Pd/Z-25 shows the highest catalytic activity with toluene…
Large-scale( = 10 cm) graphene paper(GP) was prepared by the reduction of graphite oxide paper(GOP) self-assembled at the liquid / air interface with hydrazine hydrate vapor.The morphology,structure,components and BET surface area of GOP and GP were characterized by scanning electron microscopy(SEM),X-ray diffraction…
AlN/TiN 机能上地分级材料(FGM ) 被真空 hotpressing 成功地制作。sintered 样品的体积密度被阿基米德原则测量。样品 sintered 在 1 300 ??? ? 觨? 汣獡 ? 鲀愠瀭畬 ? 汰獵鶀? ㈠ ? 猯'T?? 体猼'T 挠慬獳? 胢?? 汰獵瀭畬 ? 胢? ￣″ ? ?? ￣ ?? 鲽 ?? 螉挠慬獳? 胢?? 汰獵瀭畬 ? 胢? ￣″ ? ???????馹蛩蒚搠 ' 棠典甑啈[楴湯胣？？
Simple Stresses and Strains. Shear Force and Bending Moments. Bending Stresses in Beams. Shear Stresses in Beams. Torsion. Closed-Coil Helical Springs. Direct and Bendng Stresses. Columns and Struts. Deflection. Principal Plans and Stresses. Strain Energy. Thin Cylinders. Thick Cylinders.
Because of the inhomogeneity in the polycrystalline materials, the nontrivial grain-to-grain and phase-to-phase interaction effects change the deformation behavior of individual grain. By using slip-based crystal plasticity theory, the lattice strain evolution of specifi c orientation can be evaluated and compared wit…
4 L )，包括[ M ( H 2 L )( bpy )]( M ? =?Mn 1 ，公司 2 )，[ MH 2 L )( phen )]( M ? =?Co 3 ， Cu 4 )，并且[ Cu 2 (H 2 L ) 2 (bpy) 2 ] 5 ( bpy ?=? 2,2-bipyridine ， phen ?=? 1,10-phen X 光检查衍射显示那加重 1 和 2 是同形的。3 和 4 被显示出在不同空间组结晶，但是有的建筑群类似的结晶的单位。在建筑群， H 4 L 被看见到部分负担得起 H 的 deprotonate 2 L 2 。H 2 L 在 14 的 2 ligands 与与二个 M 中心采用有二齿的协作模式产生…
Radially oriented Nd–Fe–B ring magnets were prepared by backward extrusion of MQ-C powder. The punch chamfer radius has a great impact on the microstructure and magnetic properties of the ring magnet. With the chamfer radius changing from 2, 5 to 8 mm, the cracks in the inner wall decrease obviously while the crystall…
Carbon nano onions(CNOs) with diameters of 70-100 nm were fabricated by chemical vapor deposition at 800 ℃,using methane as carbon source and high-temperature steam treated 316 stainless steel mesh as catalyst. The CNOs were isolated from the substrate by HNO3 refluxing,calcination in air at 500 ℃ and magnetic separat…
U ovom radu, koristeći postojeća znanja iz termodinamike, prikazana su tri načina grafičkog određivanja eksponenta politrope, kao i klasični analitički način.U radu smo koristili karakteristične dijagrame p-v i T-s i u njima konstruisali određene politropske promene koje smo u daljim razmatranjima koristili za određiv…
(butene-1 )(iPB ) Isotactic poly 成功地与球形的形态学被综合与体积降水聚合没有产品处理以后。体积降水聚合进程为与解决方案聚合进程相比由于可接受的减少的费用要用作一般塑料的 iPB 使它可能。老化和 iPB 的热稳定性上的催化剂残余的影响由体积降水聚合综合了方法被胶化浸透层析，测试的机械表演， thermogravimetric 分析和红外线的分光镜的分析调查。有改变的催化剂残余内容的商业 iPB 和做实验室的 iPB 被学习。结果证明催化剂残余在 iPB 的变老的过程起了一个重要作用。由催化剂残余的老化提升的可能的机制被建议。
运输上的模拟 CO2 和 CH4 气体处理在的分子的动力学(MD ) 的结果(ether-b-amide )(PEBAX ) poly， /nanosilica 膜被讨论。为在有在模拟盒子中装载的 nanosilica 的不同数量的 6 个盒子的 CH4 和 CO2 气体的散开系数被介绍。结果证明为在所有情况中的 CO2 气体的散开系数比为 CH4 那个的那些大。而且装载大小写的 10% nanosilica 在散开系数上显示出最大的效果并且分别地为 CO2 和 CH4 气体在超过 68% 和 157% 改进他们。另外， 3-D 的结果笛卡儿的轨道和排水量曲线被介绍， CO2 的跳的尝试是显著地多于 CH4 的。由于在周围的温度的…
A series of Ce-Cu-Co/carbon nanotubes(CNTs) catalysts with different Ce contents were prepared by co-impregnation, and the catalytic performance was investigated for the synthesis of higher alcohols from syngas. The catalysts were characterized by X-ray diffraction(XRD), temperature-programmed reduction of H2(H2-TPR),…
Two series of new diamine monomer containing ester structure named bis(4-aminophenyl) terephthalate(BPTP) and 4-aminophenyl-4'-aminophenylbenzoate(APAB) in the main-chain were introduced in this paper. A variety of poly( ester imide) s( PEIs) was prepared using BPTP and APAB with some commercial dianhydrides. A series…
) 。为 mesophase 形成的动力学的 Avrami 代表(n) 为整洁的 PLLA 是 0.5 并且 1 为 PLLA/PEG，分别地，通过异构的成核显示那 1D 杆生长发生在 PLLA mesophase 的形成期间。张力的测试证明 PLLA mesophase 能增加张力的力量和模量，但是减少延伸在碎。
Fractal analysis of fracture surfaces in different kinds of refractories including magnesia- carbon and magnesia- chrome refractories was investigated. The fractal dimensions of fracture surfaces for three points bending test were determined by slit island method. The results show that the cold modulus of rupture incr…
物理性质，预先反应的表演和松开的玻璃批和成粒的玻璃批的融化的性质分别地被调查。试验性的结果证明那压缩玻璃批能减少灰尘，使用极其细小的粉末，并且改进热转移效率。松开的玻璃批什么时候被压缩进小粒，热传导性从 0.273 W/m 被增加？