A multi-institutional, multidisciplinary project addresses optimal integration of computational design and efficient experimentation for the accelerated design and development of high performance materials using the example of Nb-based superalloys combining oxidation resistance, creep strength and ductility for aeroturbine applications operating at 1300 ̊C and above. Integrated within a systems ...

By varying the ratio of the constituents, compound films can exhibit a widely tunable range of physical properties. Atomic layer deposition ~ALD! techniques are based on sequential, self-limiting surface reactions and can grow compound films. In this study, ZnO/Al2O3 alloy films were prepared using ALD techniques. By adjusting the ALD pulse sequence, the ZnO/Al2O3 alloy film composition was var...

Supported Pd-based catalysts used in heterogeneously catalyzed liquid phase processes often undergo an activation step through reduction of the oxide or oxidic passivation layer prior to reaction. An oxidized Pd/Al2O3 catalyst was reduced by using H2-saturated cyclohexane at 70 °C, and followed real time attenuated total reflection infrared spectroscopy (ATR-IR), high-energy X-ray diffraction (...

Triboluminescence (TL) is an optical phenomenon that has a long and varied history with broad applications, such as damage detection, X-ray source, and mass health monitoring sensor. So far, the properties and mechanisms of TL remain not completely understood. The TL properties emitted during the sliding contact between Al2O3 and SiO2 surfaces were studied along different crystallographic orien...

Việc điều khiển tính dị hướng và trường trao đổi dịch (HEB) trong các màng mỏng sắt từ/phản (FM/AFM) từ được coi là chìa khóa sự phát triển thiết bị spintronics thế hệ mới. Trong bài báo này, chúng tôi nghiên cứu khả năng biến HEB dựa trên thông số cấu trúc nano xốp đa lớp FM/AFM. Các màngmỏng [Co/Pd]-IrMn phún xạ đế phẳng SiO2 Al2O3 TiO2có kích thước lỗ độ nhám bề mặt khác nhau. Ảnh hưởng của ...

The catalytic synthesis of hydroquinoneutilize benzene as the starting material. The manufacture of hydroquinone by oxidation of phenol and 1,2diisopropylbenzene. The first route begin with Friedel-Crafts alkylation of petroleum –derived benzene to afford cumene. Subsequent Hock-type, air oxidation of the cumene leads to formation of acetone and phenol. The phenol is oxidized by using 70%hydrog...

A series of ceria nanocatalysts have been prepared to study the structure dependency of the CO oxidation reaction. The ceria samples with well-defined nanostructures (nanocubes/Ce-NC and nanorods/Ce-NR) have been prepared using the hydrothermal method. Mesoporous ceria (Ce-MES) and ceria synthesized with solution combustion technique (Ce-SCS) have also been prepared for comparison. The lowest C...