Robert Sitar、Ivan Šulc、Franjo Kelemen2015-01-01OpenAlex
Unaprjeđenje metoda određivanja dodatnih gubitaka u transformatoru može donijeti znacajne ustede proizvođacu. Zbog toga je potrebno testirati potencijalne metode određivanja gubitaka na modelima. U referatu je dan prikaz istraživanja dodatnih gubitaka u energetskim transformatorima na eksperimentalnim modelima. Na prv…
Magnetic Properties and ApplicationsElectromagnetic Launch and Propulsion TechnologyNon-Destructive Testing Techniques
Jianfeng Huang、Bo Zhang、Ouyang Haibo 等 7 位作者2015-01-01RSC Advances
Mullite coatings with different particle sizes were prepared on carbon/carbon (C/C)–SiC composites surface by pulse arc discharge deposition (PADD).
Advanced ceramic materials synthesisMetal and Thin Film MechanicsAdvanced materials and composites
Chao‐Hsin Wu2015-01-01University of Southern California Digital Library
Organic light-emitting diode (OLED) refers to any light-emitting diode (LED) using exclusively molecular and polymeric materials. Since the first demonstration in late 80s, OLED has been the topic of intense interest to both scientific and industrial community. With the progresses made on improving performance, the mo…
Chemical and Physical Properties of MaterialsSAS software applications and methodsOrganic Light-Emitting Diodes Research
连雪艳、刘韦颖、程自亮 等 5 位作者2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni
研究了H2稀释比对a-Si:H/nc-Si:H薄膜光电特性及微结构的影响。采用RF-PECVD法,以高纯Si H4及H2/Si H4混合气体为反应气源交替反应制备样品,并通过紫外-可见光分光光度计、椭偏仪及Keithley 4200、XRD对样品进行分析测试。实验表明:在纳米级厚度的a-Si:H薄膜基础上,随着第二反应气H2/Si H4混合气中H2比率(99%、97%、95%、92%、80%)的升高,沉积速率持续下降,薄膜消光系数、禁带宽度以及电导率呈现先增大后减小的趋势。针对实验现象,结合薄膜生长机理对实验结果原因进行了分析。
Thin-Film Transistor TechnologiesSilicon Nanostructures and PhotoluminescenceSilicon and Solar Cell Technologies
杨芃焘、杨万民、王妙 等 5 位作者2015-01-01中国物理B:英文版
The influence of the width of the middle magnet in the permanent magnet guideways(PMGs) on the levitation force and the levitation height of single-domain yttrium barium copper oxide(YBCO) bulks has been investigated at 77 K under the zero field cooled(ZFC) state. It is found that the largest levitation force can be o…
Magnetic and transport properties of perovskites and related materialsPhysics of Superconductivity and MagnetismMagnetic Bearings and Levitation Dynamics
蒋强国、古尚贤、周茂鹏 等 6 位作者2015-01-01陶瓷学报
通过热压烧结方式制备Si3N4陶瓷,采用阿基米德排水法、SEM和四点弯曲法分别对样品的致密度、第二相、微观结构和力学性能进行测试。在添加Mg O-Lu2O3-Re2O3三元添加剂的S3N4陶瓷中,(Sm2O3,Er2O3)易促使Lu2O3在晶界处形成第二相Lu4Si2N2O7。在添加Mg O-Lu2O3-Re2O3(La2O3,Gd2O3,Er2O3)的Si3N4陶瓷中,长柱状晶均匀分布在较小的基体晶粒中,并弱化晶界,样品的四点抗弯强度均在900MPa以上,断裂韧性高于9 MPa·m^1/2。而在添加Mg O-Lu2O3-Sm2O3的Si3N4样品中,由于局部出现晶粒异常长大现象,强度和韧性提高较小。另外,与传统二元Mg O-Re…
Bone Tissue Engineering MaterialsSilicone and Siloxane ChemistryAdvanced ceramic materials synthesis
Алешина Людмила Александровна、Логинов Дмитрий Владимирович、Щербанич Яна Игоревна2015-01-01Transaction Kola Science Centre
X-ray powder pattern of lithium niobate have been registered on the DRON-6 diffractometer on CuK radiation. The periods of a crystal lattice and models of atomic structure of lithium niobate doping by zinc are refined by means of the method of the full-profile analysis of X-ray pattern. It is shown that with increase…
Metallurgical and Alloy ProcessesZeolite Catalysis and SynthesisElectrical and Electromagnetic Research
郑慧、徐杨、段春迎2015-01-01无机化学学报
基于三氰构筑单元合成了两个氰基桥联的FeⅢ-MnⅡ一维链,{[Fe(Tp)(CN)3]2[Mn(bib)]}·CH3OH·2H2O(1)和{[Fe(pzTp)(CN)3]2[Mn(bib)]}·3H2O(2)。1和2中的双之字链通过刚性的双齿配体固定排列方式并连接成二维结构,链内FeⅢ和MnⅡ之间的磁相互作用可以通过改变链中配体的位阻调控。
Porphyrin and Phthalocyanine ChemistryMagnetism in coordination complexesMagnetic properties of thin films
刘兆清、黄志翠、张秋丽 等 6 位作者2015-01-01广州大学学报:自然科学版
通过简单直接的两步电化学沉积法成功制备了核壳结构的ZnO/V2O5纳米管阵列.通过采用XRD,SEM,TEM和XPS等表征手段对这些制备的ZnO/V2O5核壳纳米管结构的物相和微结构进行分析.光电化学测试结果表明:ZnO/V2O5核壳纳米管阵列相比于单一的ZnO纳米棒阵列具有明显增强的光电化学性能,使其有望在光解水领域得到广泛的应用.
TiO2 Photocatalysis and Solar CellsMagnesium Oxide Properties and ApplicationsAdvanced Photocatalysis Techniques
孙佳超、章兰珠、蔡仁良2015-01-01OpenAlex
为了使金属与金属接触型(MMC)螺栓法兰接头的设计计算更为精确,欧洲标准协会(CEN)在2006年发布了适用于MMC型螺栓法兰接头的计算标准pr CEN/TS1591-3。介绍pr CEN/TS1591-3计算方法,运用该方法的力学模型、计算流程以及计算相关的密封垫片参数,并给出对应的算例,为MMC型螺栓法兰接头的计算提供参考。
Electromagnetic Compatibility and Noise SuppressionCopper Interconnects and ReliabilityElectrical Contact Performance and Analysis
李树材、胡星园2015-01-01塑料科技
以乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯三元共聚物(PTW)作为反应性增容剂,采用熔融共混法制备了全同聚丁烯-1/聚对苯二甲酸乙二醇酯/PTW(PB-1/PET/PTW)三元共混合金。借助扫描电子显微镜(SEM)、正交偏光显微镜(POM)、广角X射线衍射仪(XRD)、万能试验机考察了PTW对PB-1/PET共混合金相容性、结晶性能和力学性能的影响。结果表明:PTW的加入可改善PB-1与PET之间的相容性,并提高共混合金的拉伸性能;虽然共混合金中PB-1组分的晶体结构未有改变,但其结晶的完善程度略有降低。
Advanced Polymer Synthesis and Characterizationbiodegradable polymer synthesis and propertiesSynthesis and properties of polymers
赵儒霞、张海洋、张淑华2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni
利用3-甲氧基水杨醛、叠氮化钠与六水合氯化铁在室温下合成了一个新型单核铁配合物[Fe(hmb)2(N3)(H2O)],对其进行了X射线单晶衍射仪、元素分析测试。该配合物属于三斜晶系,P1空间群。晶胞参数:a=0.856 03(8)nm,b=0.958 54(9)nm,c=1.112 74(9)nm,α=78.957(7)°,β=87.317(7)°,γ=80.061(8)°。中心铁离子以六配位的模式与氧原子、氮原子连接形成八面体的构型,配合物分子首先通过C—H…N氢键连接成一维链状结构,进一步通过π…π共轭和氢键作用构成三维空间结构。
Inorganic Fluorides and Related CompoundsMagnetism in coordination complexesMetal-Organic Frameworks: Synthesis and Applications
张蛟、Jun Li、Ying Liu 等 5 位作者2015-01-01磁性材料及器件
利用双主相合金法制备了Ce取代的廉价(Nd,Ce)-Fe-B磁体,研究了Ce取代对永磁体烧结致密化行为、显微结构与磁性能的影响。结果表明,用Ce部分取代Nd能够促进烧结,降低烧结温度;随着Ce取代量的增加,晶粒开始明显长大,磁体晶粒尺寸变得不均匀,晶间富稀土相也开始团聚,磁体各项磁性能逐步降低,在Ce取代量为总稀土的20%时,材料剩磁为1.05T,内禀矫顽力为651.4k A/m(8.18k Oe),最大磁能积为198.4k J/m3(24.92MGOe),仍具有较好的综合磁性能。
Magnetic Properties of AlloysMetallurgical and Alloy ProcessesMetallic Glasses and Amorphous Alloys
Cody W. Schlenker2015-01-01University of Southern California Digital Library
Presently, collective understanding of the involved processes and requisite components that may lead to maturation of organic photovoltaic devices from bench top concept to disruptive solar energy conversion technology have not affected efficiencies within the balance of systems threshold. Primarily, poor broadband sp…
Chemical and Physical Properties of MaterialsOrganic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes Research
Князев Сергей Валентинович、D. V. Skopich、Усольцев Александр Александрович 等 4 位作者2015-01-01Вестник Сибирского государственного индустриального университета
The article presents the problem solutions, connected with obtaining steel defect on mechanical properties, with the help of forecasting model, using the method of Random Forest (RF). For the analysis five indicators of mechanical properties (impact resistance KСU-60 oС and KCV-60 oС, ultimate strength, contraction ra…
Material Properties and Failure Mechanisms
徐明、胡传顺、王洪志2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni
为进一步提高Ni-Cu-P化学镀层的耐蚀性,设计了3种不同温度及保温时间的热处理工艺对镀层进行热处理。通过XRD分析了镀态及热处理态镀层结构的变化,通过2273电化学工作站测试了它们在3.5%Na Cl溶液中的极化曲线和交流阻抗。结果表明:热处理后由于Ni-Cu固溶体及Ni3P相的析出,使得热处理态镀层在腐蚀介质中具有更低的腐蚀电流密度和更高的电荷转移电阻,且300℃保温30 min的热处理工艺处理的镀层耐蚀性最佳。
Electrodeposition and Electroless CoatingsMetallurgical and Alloy ProcessesDiverse Musicological Studies
Richard J. Seymour2015-01-01PhDT
Molecular dynamics simulations have been performed to study nanoindentation of NiAl and Ni3Al crystals on three surfaces: (100), (110), and (111). Obtained load-displacement curves show discrete drops at certain depths, indicating dislocation bursts in Ni3Al and structural phase transformation in NiAl underneath the i…
Advanced ceramic materials synthesisMetal and Thin Film MechanicsIntermetallics and Advanced Alloy Properties
Caroline M. Rufo2015-01-01Syracuse University Libraries (Syracuse University)
Enzymes are extremely powerful tools essential for all human life. Enzymes are usually comprised of hundreds of amino acids and rely on well-defined secondary structure for function. While short peptides do not normally adopt well-defined secondary structure, they have the potential to be good models for enzymes. The…
Supramolecular Self-Assembly in MaterialsChemical Synthesis and Analysis
索忠源、宋艳玲、王鑫 等 4 位作者2015-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni
添加合金元素可提高非晶合金的耐蚀性。对Ti-Zr-Be-Cu块体非晶合金添加Co,采用电化学极化曲线和浸泡腐蚀法研究所制备的Ti35Zr30Be27.5-xCu7.5Cox(x=3.5,7.5,11.5)块体非晶合金在不同温度1mol/L HCl溶液中的腐蚀行为,探讨添加Co元素提高Ti—Zr—Be-Cu块体非晶合金耐蚀性的机理。结果表明:Ti35Zr30Be27.5-xCu7.5Cox块体非晶合金在298K的1mol/L HCl溶液中都具有很好的耐蚀性,阳极极化曲线表现出明显的钝化特征,随着Co元素含量的增大其耐蚀性能逐渐增强,非晶合金的自腐蚀电位高于不锈钢,自腐蚀电流密度比不锈钢小1个数量级;在313,333K的1mol/L…
High Entropy Alloys StudiesMetallurgy and Material ScienceAluminum Alloy Microstructure Properties
Regula Bickel2015-01-01Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture)
Les bocaux de conserve sont fermés avec des couvercles à vis appelés twist-off ou quart de tour. La rondelle d’étanchéité contient le plus souvent du PVC avec un plastifiant. Le problème est d’une part que Bio Suisse interdit de manière générale le PVC dans les emballages et d’autres part que les plastifiants utilisés…
Polymer Science and PVC