Materials Literature
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93W-4.5Ni-1.5Fe-1Co (W) 被粉末准备冶金学的方法，然后这材料的动态机械性质借助于高温度的裂口 Hopkinson 压力酒吧(SHPB ) 在高温度被测试。结果证明材料拥有高度动态的机械性质，重要温度效果，和紧张变硬行为。使用二阶段的轻煤气的枪， 93W 射弹的穿入测试被完成。在测试的结束以后，通过剩余 93W 射弹的微观结构观察在扫描电子显微镜学( SEM )和传播电子显微镜学( TEM )的帮助下，有明显的符号，这能被发现热融化在射弹的表面上存在，很多断热砍在射弹内的乐队，和 microcracks 在结束存在断热砍乐队。测试结果显示出那断热砍是主要形式引起射弹失败，它是让 93W 在超高速穿入的过程显示好…
淀粉 / 硼氮化物(starch/BN ) bionanocomposites 被答案技术与硼氮化物 nano 粉末的加强准备。在淀粉的 BN 的分散被一个连续 sonication 过程完成。在淀粉和硼氮化物 nanopowder 之间的相互作用被 Fourier 变换调查红外线(FTIR ) 光谱学。starch/BN bionanocomposites 的结构的性质被 X 光检查衍射(XRD ) 学习。高分辨率传播电子显微镜学(HRTEM ) 在淀粉矩阵被用于硼氮化物的分散的学习，衍射模式被选择区域电子衍射(SAED ) 学习。淀粉的热稳定性与淀粉矩阵由于僵硬 nano BN 的加入与硼氮化物的升起的集中被增加。在氧渗透的实…
CeO2–TiO2composite supports with different Ce/Ti molar ratios were prepared by a homogeneous precipitation method, and V2O5–WO3/CeO2–TiO2catalysts for the selective catalytic reduction(SCR) of NOx with NH3 were prepared by an incipient-wetness impregnation method. These catalysts were characterized by means of BET, XR…
A Zn Cl2-modified ion exchange resin as the catalyst for bisphenol-A synthesis was prepared by the ion exchange method. Scanning electron microscope(SEM), Fourier transform infrared spectrophotometer(FT-IR), thermo gravimetric analyzer(TGA) and pyridine adsorbed IR were employed to characterize the catalyst. As a resu…
In order to recycle the etching solution, the waste FeCl3etching solution of a plant was renewed by a process of ion- exchange membrane electrolysis. Then the performance of the renewed etching solution was evaluated in terms of the effect of etching time, temperature, concentration of the etching solution and the fre…
The stability of palygorskite,especially the growth of palygorskite under hydrothermal conditions,is an important aspect in palygorskite clay studies.The reaction at different proportions and concentrations of MgCl2 ·6H2 O/Mg(OH) 2 was investigated.The influences of parameters(i.e.,magnesium compounds types,temperatur…
Graphene-based silver nanoparticles (Ag NPs-GE) material has been developed and demon- strated antibacterial effect against Escherichia coli and Pseudomonas aeruginosa. In this study, the antibacterial activity and mechanism on P. aeruginosa were investigated. The experiments results showed the minimum bactericidal co…
The mechanical properties,chemical properties and biocompatibility of Mg-3Sn—0.5Mn alloy were tested.A series of in vitro evaluations such as tensile test,static and dynamic immersion test,hemocompatibility test as well as cytotoxicity test were presented,with commercial magnesium alloy WE43 as the control.Mg-3Sn-0.5M…
The graphite oxide (GO) was prepared from expandable graphite by the pressurized oxidation method, and samples were characterized using XRD, UV-Vis, and TEM. GO is reduced in situ emulsion using hydrazine to achieve reduced graphene oxide/waterborne polyurethane (rGO/WPU) nanocomposites. The effect of rGO content on t…
Series of novel low-firing microwave dielectric ceramics with the composition of Li1?2xMg4-xV3O12 (-0.2 B x B 0.1) were prepared by a solid-state reaction process. The crystal structure, sintering behavior and microwave dielectric properties of ceramics were investi- gated using X-ray diffraction, scanning electron mi…
面向、非面向的特氟隆重电影，它被发现到有一样的水晶的结构，而是不同表面形态学， poly 习惯于三明治(丁烯 adipate )(PBA ) 在等温的结晶化期间拍摄。它被发现那多态的结构是的特氟隆重表面结构和 PBA 导致取向附生的结晶化的决定因素。面向的特氟隆重电影能导致 PBA 水晶的取向附生的结晶化，当非面向的特氟隆重没导致 PBA 的任何取向附生的结晶化时。取向附生的结晶化为在两个都不之间的 PBA 晶体发生了面向非面向的特氟隆重也不拍摄。PBA 电影的酶的降级率没被取向附生的结晶化决定，事实上它仍然依赖于 PBA 的多态的水晶结构。在酶的降级以后的 PBA 电影的词法变化再证实取向附生的结晶化仅仅与被在面向的特氟隆重电影…
In order to meet the different demands of the LCD matrix,a serious of 1,2,4-oxadiazoles compounds was synthesized.These compounds were synthesized from aryl iodides through three steps.Their constructions were confirmed by NMR,FT-IR and elemental analysis.The parameters and the performances of these compounds were mea…
以取代苯甲醛、乙酰乙酸乙酯和尿素为原料,以溶胶凝胶法制备二氧化硅负载的磷钨酸（H3PW12O40/SiO2）为催化剂,催化合成3,4-二氢嘧啶-2（1H）-酮,考察了三组分摩尔比、反应温度、催化剂用量及反应时间对反应收率的影响。研究表明,H3PW12O40/SiO2是合成3,4-二氢嘧啶-2（1H）-酮的良性催化剂,在取代苯甲醛的用量为0.04 mol,反应温度为90℃的条件下,收率可达73.1%-88.4%。催化剂和产品结构分别经IR、XRD、SEM和1H NMR、IR、MS等技术手段表征。
Diese Dissertation entstand in einer interdisziplinaren Zusammenarbeit zwischen Materialphysikern und Materialchemikern. Das gemeinsame Ziel war die Entwicklung multifunktioneller Materialien und die Charakterisierung ihrer Nanostruktur, um die chemischen und physikalischen Eigenschaften zu verbessern. Der Fokus diese…
蘸的方法被设计扔 Pd 到向 polyketone (PK ) 的形成为碳一氧化物(公司) 和苯乙烯(圣) 的 copolymerization 支持了催化剂(Pd/CNT ) 的碳 nanotube 上。Pd/CNT 被 X 光检查光电子光谱学(XPS ) 描绘， X 光检查衍射(XRD ) 和高分辨率的传播电子显微镜学(HRTEM ) 。PK 的构造和结晶化性质被 Fourier 变换评估红外线的光谱学(FTIR ) ， 13C-nuclear 磁性的回声(NMR ) 和 XRD 分别地。催化剂在支持 PK 的制造显示出优秀活动和可重用性。它能与 4 239.64 gPK/ 的最高全部的催化活动被再循环 14 次(gPd ? T
3 /Co(0.4?nm)/Cu(3.0?nm)和 Cu ( 3.0 ? nm )/[公司( 0.4 ? nm ) /Pt ( 1.5 ? nm )] 4 ,分别地。结果当这块地被使用时，假 SV 展出二个分开得好的磁滞现象环对电影飞机垂直。相应于免费的层的次要的磁滞现象环向磁场轴的否定方向变，显示在二磁性的层之间联合的铁磁性的夹层交换。联合也提高 coercivity (H 两层的 C ) 。2.7 的垂直巨大的磁致电阻(GMR )?% 在飞机测量与电流被完成。当磅种子层被变厚时， GMR 首先增加，到达 3.0 的最大值 ? 在 4 点的 %? 有厚度的另外的增加的 nm 然后减少。但是更厚的 Cu 分隔符层总是降低 SV 的…
The contents of cellulose, total carbohy- drates, sugars (fructose, glucose, galactose, sucrose, and cellobiose), and minerals (nitrogen, phosphorus, potas- sium, sulfur, calcium, and magnesium) were determined at various stages of fiber development in the brown cotton cultivar ZX-1, the green cotton cultivar G-7, and…
在这研究，结构和用在一个分子的横梁取向附生反应堆的 Au 催化剂的 InAs nanowires 的 quality controlled 生长被介绍。由在催化剂调节铟集中，没有缺点的 wurtzite 结构和没有缺点的锌闪锌矿结构 InAs nanowires 能被导致。这些没有缺点的锌闪锌矿结构 InAs nanowires 沿着\成长，这被发现( \left\langle { \bar 1 \bar 10 } \right\rangle \)方向与四低精力{ 111 }并且二{ 110 }方面墙方面并且采用\( \left ({ \bar 1 \bar 1 \bar 1 } \right )\) catalyst/nanow…
To investigate the effects of particle size and properties on the mechanical properties of 7075Al matrix composites, hybrid composites reinforced using three dif- ferent reinforcement combinations, 40 vol. % 7 lm SiCp with 5 vol. % 7 lm SiCp ,3 5lm SiCp, and 35 lm Ti, were prepared using squeeze casting. The failure m…
由有 0.3 wt%2.0 wt%装载的 30100 K 的5%)同时，张力的力量和幼仔模量显著地从 11.5 MPa 和 553.7 MPa 被改进到 40.5 MPa 和 2411.2 MPa ，分别地。运动计算显示了 T 的那改进 5% 大概从压制解开的链结束被导出。玻璃转变温度(T PPC/PDA composites 的 g ) 由 810 K 增加了。自从沿着 PDA 链的丰富的质子施主将在将引起 PPC 链的部分运动的限制的 PPC 与象 C=O 和 C-O-C 一样的质子领受人交往，这可能由于氢结合相互作用。