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。
Technological methods for the formation of 30-70 mm thick free porous onelayer Al 2 O 3 membranes with openended modificated pores from 50 to 90 nm in diameters by a twostage onesided anodization in oxalic acid electrolyte and combined method for the barrier layer removal were developed. Technological features for…
Sintesis PVAc berbasis metanol telah berhasil dilakukan dengan menggunakan monomer vinyl asetat dan variasi beberapa surfaktan yaitu Disponil FES 27 IS; Disponil A 1080; Disponil AES 72; Disponil AFX 3070. Penelitian ini dilakukan dengan proses polimerisasi emulsi dengan menggunakan reaktor kaca yang didesain khusus u…
Os vasos de pressão são equipamentos muito utilizados na indústria para conter ou processar fluídos sob pressão e podem armazenar grande quantidade de energia, o que implica em possibilidade de explosão no caso de ruptura do casco. Assim, é importante seu correto dimensionamento, de forma a obter equipamentos seguros,…
Advancement of technology has led to the increase in use of electronic devices. However, longer life of the rechargeable battery used in electronic devices is one of the biggest issue and demand in the world of electronic devices at present. Battery's performance is affected by the orientation, arrangement, shape and…
This thesis contains experimental studies on electronic transport properties of graphene with the Aharonov-Bohm (AB) effect, thermopower (TEP) measurements, dual-gated graphene field effect devices, and quantum Hall effect (QHE).First, in an effort to enhance the AB effect in graphene, we place either superconducting-…
The article shows that in the austenite after hot deformation while finely substructure exists in the form of polygonal boundaries, provides the basis for heterogeneous nucleation of grains hypoeutectoid ferrite.
通过对比试验优选出了合适钎料,并进行了后续钎焊试验.在钎焊温度800~900℃,保温时间为10 min的条件下,采用Ag-Cu-Ti钎料实现了DD3镍基高温合金与Ti3AlC2陶瓷的真空钎焊连接.利用扫描电镜、能谱仪、XRD等对接头的界面结构进行了分析.结果表明,接头的典型界面结构为DD3/AlNi/Al3(Ni,Cu)5+Al(Ni,Cu)+Agss/(Al,Ti)3(Ni,Cu)5/Al4Cu9+AlNi2Ti+Agss/TiAg/Ti3AlC2.接头的力学性能测试表明,在钎焊温度为850℃,保温时间为10 min的条件下,接头的最高抗剪强度可达135.9 MPa,断裂发生在靠近钎缝的Ti3AlC2陶瓷侧.降低和提高钎焊温度对…
Como objetivo principal deste trabalho estudamos a teoria de Judd Ofelt para utiliza-la como mais uma ferramenta de caracterizacao espectroscopica dos vidros produzidos por nosso grupo, analisamos os principais aspectos das aproximacoes feitas nesse modelo, que tem o proposito de explicar as transicoes que ocorrem na…
The highly efficient Er,Yb:YAl3(BO3)4 laser emitting in the 1.5-1.6 μm spectral range was demonstrated. A maximal output power of 1.6 W in CW and 2.7 W in QCW regimes with slope efficiency up to 40 % was obtained at 1522 nm.
최근 자동차 부품의 고안전 및 경량화에 대한 요구로 자동차 부품은 갈수록 고강도화가 진행되고 있다. 저합금 고강도강인 HSLA(High Strength Low Alloy) steel 소재는 조직 미세화 및 석출강화를 위해 매우 미량의 Nb, V, Ti의 원소를 첨가한 소재를 말한다. 본 연구에서 사용되어진 0.05% Nb-0.01% Ti-0.07% V microallo...
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
This paper describes light trapping in superstrate-type amorphous Si solar cells incorporated with Ag nanostructures (nanodisks) fabricated by a transfer-printing approach. The changes in external quantum efficiency (EQE) and current-voltage characteristics were investigated by changing the position and size (thicknes…
En este breve artículo se presenta la última versión de DIONISIO 2.0, un código de simulación del comportamiento del combustible nuclear bajo irradiación. Para el caso de un combustible de potencia, el código resuelve una barra completa mediante la división de la misma en sectores en la dirección axial, cada uno de el…
Stress waves propagation in welded joints is considered for the purpose of estimating the dependence of stress concentration in weld zone on geometrical and physical parameters of the weld seam. The problem is being solved by means of double integral transformation.
提出一种复合沟道氟离子（F-）增强型AlGaN/GaN HEMT（Hybrid-channel enhancement-mode AlGaN/GaN HEMT,HCE-HEMT）新结构。该结构引入高、低浓度F-复合沟道,其中高浓度F-注入区位于沟道靠近源漏两端以调制阈值电压,获得增强型器件;低浓度F-区位于沟道中部以调制肖特基栅电极的正向开启电压,增加器件承受的栅电压摆幅,但它对其下方二维电子气的耗尽作用很弱。同时,高浓度区只占栅长的40%,减轻高浓度F-对沟道的影响,提升器件的电流能力。利用Sentaurus软件仿真,结果显示,与传统F-增强型AlGaN/GaN HEMT相比,HCE-HEMT载流能力提高了40.3%,比导通电阻…
Встановлений вплив компонентного складу і природи пластифікатора на характер міжмолекулярних взаємодій у системі полівінілхлорид – полістирол – діестерфталат та оптичні характеристики розчинів полімерів. Виявлено вплив міжмолекулярних взаємодій на параметр сумісності між макромолекулами. The influence of component com…
An experiment was held to study the effect of drawing with shear on the properties of low-carbon steel with various combinations of round and shear dies. It is shown that the compression of dies with shear effect on the structure and properties of low carbon wire. The optimal reduction ratio while drawing were determi…
Avaliou-se, quanto a protecao anticorrosiva, tres tratamentos de superficie, a saber, jateamento abrasivo seco e remocao de contaminantes por ferramentas mecânicas/manuais (segundo metodologias das normas ISO 8501-1 e SSPC SP11). Corpos-de-prova, com grau C de intemperismo inicial, foram submetidos a estes metodos de…
Досліджено закономірності одержання наночастинок срібла реакцією відновлення його з солей полівінілпіролідоном без використання традиційних відновників, зокрема токсичних. Встановлений вплив природи солі арґентуму, середовища, молекулярної маси полівінілпіролідону на розмір наночастинок. The regularities of receiving…
Intermingling is one of the best alternative methods to make the filament yarns more resistant against high volume stress. This technique has started to replace conventional methods such as sizing and twisting. The intermingling process mixes multifilament yarns along with entanglement points and open parts by turns t…