Materials Literature
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为了改善20R铜在NaOH溶液中的耐蚀性，在材料表面制备了Ni—P和M—Cu—P合金镀层。测试了20R铜、Ni—P与Ni-Cu．P镀层在质量分数为15％的NaOH溶液中的极化曲线和交流阻抗。结果表明：M—P及Ni—Cu—P镀层的维氏硬度分别是20R铜的2．29和2，49倍；在质量分数为15％NaOl4溶液中，20R铜、Ni—P和Ni—Cu．P镀层的极化电位分别为-998，-611和-494mV，20R钢的自腐蚀电流密度分别是Ni．Cu—P及Ni—P镀层的27．35和5．62倍。20R钢测试电阻分别是Ni—Cu—P和Ni．P镀层的0．51和0．64倍。Ni—P与Ni—Cu—P镀层能在20R钢表面发生沉积并镀层光滑、致密、缺陷少，阻隔…
Nanomedicine focuses on the development and engineering of novel and unique therapeutic and diagnostic agents that can overcome the challenges associated with using traditional modalities. Nanoparticles (NPs) in the size range between 1 and 1000 nm have many advantages for use in these applications, such as, low polyd…
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采用高温高压釜模拟高含H2S/CO2的腐蚀环境，研究了Cl-对抗硫套管钢P110SS腐蚀速率、硫化物应力开裂和氢致开裂的影响。结果表明，抗硫套管钢P110SS的腐蚀速率随介质中Cl-浓度升高先增加后减小，当Cl-浓度达到50 g/L时，P110SS腐蚀速率达到最大值; 抗硫套管钢P110SS没有出现硫化物应力开裂和氢致开裂的裂纹，其硫化物应力开裂和氢致开裂敏感性较低，原因是均匀细小的回火索氏体组织，有益元素铬、钼、钛、钕、钒的加入以及低含量的有害元素硫和磷。
Pokušaji otvaranja inženjerskih studija u Hrvatskoj prema temama i sadržajima iz društveno-humanističkog područja sporadični su i pretežno nekonzistentni. Istraživanja koja su na tom planu provedena u okviru Katedre za sociologiju Fakulteta strojarstva i brodogradnje Sveučilišta u Zagrebu trenutno su gotovo jedina na…
Elasto-hydrodynamic lubricated (EHL) contacts can be found in various machine elements or systems, like rolling element bearings, cam followers or gear transmissions. The service life of these elem ...
Los alambres de acero fabricados mediante el proceso de trefilado presentan, en algunos casos, defectos internos conocidos como “estallido central”, los cuales son un tipo de fractura ductil originados por la nucleacion, crecimiento y coalescencia de micro-cavidades en el material. Al evolucionar internamente, estos g…
The present work aimed to explore the potential of new nanocomposites based on carbon nanostructures and metal nanoparticles for the detection of biomolecules through surface enhanced Raman scattering (SERS). In a first step, polyvinyl alcohol composites were prepared incorporating silver nanoparticles by two differen…
This paper presents a study of the thermoaerodynamic spectrum inside an asymmetrically heated vertical channel of a doubleskin façade.A double-skin façade is an envelope construction that consists of two transparent surfaces separated by an air channel.The numerical modeling was developed using the Ansys-Fluent simula…
Gratitude goes to Prof. Eric van Steen for
Die Struktur amorpher Materialien aufgeklärt. Bisher stellte dieses Vorhaben durch die Komplexität dieser Stoffklasse eine der größten Herausforderungen dar. Modernen Präparationsmethoden in Kombination mit Rastertunnelmikroskopie ist die Entschlüsselung des Alltagswerkstoffs Glas gelungen.
Penentuan nilai toleransi yang tepat sangat dibutuhkan untuk \n menghasilkan produk yang baik, untuk itulah diperlukan perhitungan yang tepat \n untuk mendapatkan rentang toleransi manufaklur yang mendekati toleransi desain. \n Pada penelitin ini digunakan metode Simulasi Monte Carlo yang mengacu pada \n suatu distrib…
Objective—Ischemic tissue is an environment with limited oxygen and nutrition availability. The poor retention of mesenchymal stem cells (MSC) in ischemic tissues greatly limits their therapeutic potential. The aim of this study was to determine whether and how inducible metabolic adaptation enhances MSC survival and…
Magnesium is a promising material for solid state hydrogen storage applications owing to its high theoretical capacity of 8.2 wt% (H/Mg). Unfavourable thermodynamics coupled with poor kinetics leads to unacceptably slow sorption rates at modest temperatures and pressures. Approaches to increasing the sorption rates in…
저작자표시-비영리 2.0 대한민국 이용자는 아래의 조건을 따르는 경우에 한하여 자유롭게 l 이 저작물을 복제, 배포, 전송, 전시, 공연 및 방송할 수 있습니다.l 이차적 저작물을 작성할 수 있습니다.다음과 같은 조건을 따라야 합니다: l 귀하는, 이 저작물의 재이용이나 배포의 경우, 이 저작물에 적용된 이용허락조건 을 명확하게
The solute atom distribution of the L12 ordered phase (Al3X, X=Sc, Zr) was investigated for an Al–0.15 mol%Sc alloy and an Al–0.10 mol%Zr–0.05 mol%Si alloy using three-dimensional atom probe (3DAP) analysis and Monte Carlo simulation. Precipitates of the L12 ordered phase (Al3X, X=Sc, Zr) in the Al–Sc and Al–Zr–Si all…
In this project, the object for investigation and product development process was the suspension of the extra support axle on Scania AB’s five axle trucks. One question for the thesis was to find o ...
The effect of grain refinements by Accumulative Roll Bonding (ARB) was investigated on low carbon steel. Optical microscopy (OM) and microhardness tests were used to check the phase changes and hardness before and after ARB. A combined technique between cold rolling and ARB was used to obtain the changes of grain size…
Ce travail de recherche se décompose en trois parties. Le premier volet fait part des différentes approches étudiées dans la littérature concernant les bois-plastiques (WPC) et de différentes possibilités existantes tout en mettant en avant les résultats préliminaires obtenus. Il rapporte aussi le potentiel des lignin…
Ce projet de thèse explore les paramètres régissant l’incorporation de nanoparticules métalliques à l’intérieur d’une couche ultramince de copolymère à bloc. Les composites sont mis en forme à l’interface air/eau à l’aide d’une cuve de Langmuir, puis transférés sur substrat solide à l’aide de la technique de Langmuir-…