Materials Literature
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Purpose This paper aims to further investigate the behavior and mechanism in simulated oilfield solution on CO 2 corrosion of P110 steel at various temperatures by potentiodynamic sweep and electrochemical impedance spectroscopy (EIS) measurements, especially discussing the influence of the coverage fraction of corros…
Abstract Polymer blend of poly(2,6‐dimethyl‐1,4‐phenylene ether) (PPE) and poly(styrene‐ co ‐acrylonitrile) (SAN), which has broad commercial interest, has limited miscibility. A triblock terpolymer, polystyrene‐ block ‐polybutadiene‐block‐poly(methyl methacrylate) (SBM), is often used as compatibilizer to improve the…
Using molecular dynamics (MD) simulations, we demonstrate the domino effect of a carbon nanotube (CNT) whose diameter is less than 35 Å. Our simulations show that the domino wave will propagate backward, when the CNT has certain appropriate dimensions (length and diameter), after passing through the whole CNT for the…
We report analytical and numerical studies of the effect of the separation distance between zeros of dielectric permittivity and magnetic permeability on the phenomena of resonant absorption and anomalous field enhancement in transition metamaterials. Our studies indicate that these phenomena are robust and strongly p…
<div class="section abstract"><div class="htmlview paragraph">EPA 2015 Tier IV emission requirements pose significant challenges to large diesel engine after treatment system development with respect to reducing exhaust emissions including HC, CO, NOx and Particulate Matter (PM). For a typical locomotive,…
Abstract Ferroelectric random‐access memory (FeRAM) is considered to be one of the best candidates for universal memory. However, difficult scaling of the memory cell size has hindered the realization of high density FeRAM. Given that size scaling is inherently limited by the complicated crystal structure and processi…
采用激光区熔快速定向凝固技术制备出Al 2 O 3 /Er 3 Al 5 O 12 (EAG)共晶自生复合陶瓷, 研究了不同激光扫描速率下材料的凝固组织特征及其演变规律, 并对其力学性能和增韧机制进行了分析. 结果表明: 激光区熔Al 2 O 3 /EAG由连续的Al 2 O 3 和EAG两相组成, 两相相互交错分布, 形成均匀的三维网状结构; 共晶间距细小, 在0.2~2.1μm之间, 并随着扫描速率的增加规律性地减小. 在低的扫描速率下, 微观组织呈现典型的层片状非规则共晶组织; 当扫描速率增至800μm/s时, 出现了胞状及EAG树枝晶. 共晶陶瓷的硬度和断裂韧性分别为18.7GPa和2.45MPa·m 1/2 . 微观组织…
Despite the practice of using cylindrical specimens in a split-Hopkinson pressure bar (Kolsky bar) experiment, the use of non-cylindrical prismatic specimens is not uncommon. This is convenient when testing extra-soft materials like brain tissues, muscles, or samples that are brittle and cannot be machined to an exact…
Epitaxy between materials with good lattice match requires perfect staking on the atomic scale and is thus often considered to be challenging to achieve by low-temperature solution-based hydrothermal growth. Inspired by the concept of the buffer layer in vapor-phase epitaxial growth, we present herein a novel syntheti…
A series of synthetic benzylpenicillinoylated dendrimers has been prepared using up to 4th generation PAMAM dendrimers. These nanoconjugates, as nanosized Dendritic Antigens, are useful in the diagnostic evaluation of drug allergy due to specific molecular recognition with the Human Immunological System (IgE). The mor…
Using molecular dynamic simulations, we study three families of continuous core-softened potentials consisting of two length scales: a shoulder scale and an attractive scale. All the families have the same slope between the two length scales but exhibit different potential energy gap between them. For each family thre…
The knowledge of the power density for which luminescence intensity reversal begins with power increase is of valuable importance for practical applications. Under 980 nm CW diode laser excitation, the maximum upconversion luminescence intensities were obtained at 4800, 5700, and 7100 W/cm 2 for 2 H 9/2 → 4 I 15/2 , 2…
The atomic and electronic structures, heat of formation, Young's modulus, and ideal strength of hydrogenated diamond nanowires (DNWs) with different cross-sections (from 0.06 to 2.80 nm(2)) and crystallographic orientations ((100), (110), (111), and (112)) have been investigated by means of first-principles simulation…
Rare-earth-doped glasses are key materials for optical technology due to the luminescent properties of $4{f}^{n}$ ions. The crystal-field model describes the effect of local environment on transitions between $4f$ electrons. We present a detailed modeling study of the optical spectra of sodium disilicate glass, $33{\m…
Optimization of thin films of small bandwidth manganite, Pr(1-x)Ca(x)MnO3 (for x = 0.1), and their magnetic properties are investigated. Using different pulsed laser deposition (PLD) conditions, several films were deposited from the stoichiometric target material on SrTiO3 (001) substrate and their thorough structural…
Detailed kinetic modeling was used to interpret the kinetics of the global CO + O 2 reaction in the presence of hydrogen on Pt/Al 2 O 3, Rh/Al 2 O 3, and Pt/Rh/Al 2 O 3 catalysts. The rate parameters were compiled from the literature and optimized to improve the predictivity against multiple experimental data sets. Th…
The conversion of CO(2) to valuable compounds, which is considered as an effective approach to solve the global warming, represents a great challenge due to the high stability and low reactivity of CO(2). Herein, thermodynamic calculations predicted the feasibility of exothermic reactions between CO(2) and Li(3)N into…
The sol‐gel reaction of tetraethoxysilane in natural rubber (NR) latex was conducted to produce in situ silica‐filled NR latex, followed by adding sulfur cross‐linking reagents to the latex in a liquid state. The latex was cast and subjected to sulfur curing to result in a unique morphology in the NR composite of a fl…
Purpose This paper aims to investigate the galvanic corrosion of titanium/L 316 stainless steel, by electrochemical noise (EN), electrochemical impedance spectroscopy (EIS), and anode/cathode area ratio effect on the galvanic behavior of the couple. Design/methodology/approach The EN measurement was employed to examin…
The main objective of this study was to explore the suitability of Vitis vinifera as a raw material and alkaline lignin as a natural binder for fiberboard manufacturing. In the first step, Vitis vinifera was steam- exploded through a thermo-mechanical vapor process in a batch reactor, and the obtained pulp was dried,…