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。
A facile route was used to modify Al particle surfaces by putting Al particles into an Al ( OH ) 3 suspension, which was produced by the reaction of Al powder with water under vacuum at a mild temperature, then drying and heat‐treating under vacuum at elevated temperature. The modified Al powder has a good reaction ac…
The dry sliding wear behavior of Mg-1.5Zn-0.15Gd alloy before and after cryogenic treatment was studied by wear tests using a ball-on-disk configuration at room temperature. The wear tests were performed at speeds ranging from 0.05 to 0.7 m/s under three different applied loads (5, 7, and 10 N). The worn surfaces and…
A very simple synthetic procedure was developed for the preparation of Ni-Sn alloy catalysts that were utilised for chemoselective hydrogenation of furfural, producing furfuryl alcohol almost exclusively. The mixture of nickel nanoparticles supported on aluminium hydroxide (R-Ni/AlOH) and a solution containing tin was…
Borosilicate glasses doped with PbO , ZnS , or PbS were fabricated to investigate the visible emissions (one located at 370 nm and another at 550 nm) observed in the PbO and ZnS codoped glass. Several series of glassy systems were designed to investigate the mechanism of above visible emissions. The absorption, photol…
ABSTRACT Amyloid structures constitute a class of highly ordered nanomaterials formed by insoluble protein aggregates. These aggregates are characterized by a cross‐β structural motif in which β‐sheets are oriented perpendicular to the fibril axis and bound together by a dense hydrogen bonding network. Although they h…
Mesoporous alumina (MA)was synthesized by sol–gel based evaporation‐induced self‐assembly process using aluminum isopropoxide as alumina source in the presence of three different types of triblock copolymers (TBCs), F68, F127, and L64. The role of different TBCs as surfactants on thermal, crystallization, textural, an…
Grain‐boundary character distributions ( GBCD s) were determined for spark plasma sintered Y ‐ and La ‐doped aluminas prepared at temperatures between 1450°C and 1600°C. La doping leads to grain boundaries that adopt (0001) orientations 3.7 times more frequently than expected in a random distribution, whereas the Y‐do…
The objective of the study was to evaluate the effect of chitosan coatings combined with zeolite on tomato (Lycopersicon sculentum cv. FA-180 HAZERA) quality attributes during refrigerated storage. Coatings were applied by double immersion of fruits in the film-forming solutions for 5 min, depending on treatments: (i)…
The dielectric and ferroelectric characteristics of ( Sr x Ba 1− x ) Nb 2 O 6 unfilled tungsten bronze ceramics have been investigated together with the structure. The dielectric and ferroelectric characteristics of the present ceramics vary significantly with x , and the A1/A2‐sites occupancy has been determined as t…
A series of compositions with general stoichiometry Ca 1− x Zr 1− x Nd 2 x Ti 2 O 7 has been prepared by high‐temperature solid‐state reaction of component oxides and characterized by powder X ‐ray diffraction and electron probe for microanalyses ( EPMA ). The phase fields in CaZrTi 2 O 7 – Nd 2 Ti 2 O 7 system and di…
Bare copper sheet and three commercial Cu-based alloys, Cu15Zn, Cu4Sn and Cu5Al5Zn, have been exposed to four test sites in Brest, France, with strongly varying chloride deposition rates. The corrosion rates of all four materials decrease continuously with distance from the coast, i.e. with decreasing chloride load, a…
Due to the great importance for many industrial applications it is crucial from the point of view of theoretical description to reproduce thermal properties of thermoplastic polyimides as accurate as possible in order to establish "chemical structure-physical properties" relationships of new materials. In this paper w…
The impact of silver nanoparticles (AgNP; at 0 mg Ag/kg, 1.5 mg Ag/kg, 15.4 mg Ag/kg, and 154 mg Ag/kg soil) and silver nitrate (AgNO3 ; 15.4 mg Ag/kg soil) on earthworms, Lumbricus rubellus, was assessed. A 4-wk exposure to the highest AgNP treatment reduced growth and reproduction compared with the control. Silver n…
The kinetics of hydration of magnesium oxide (MgO) powder to form magnesium hydroxide (Mg(OH) 2 ) were measured using isothermal calorimetry at different temperatures, and the morphology of the powders before and after hydration were examined. The hydration kinetics of light‐burned MgO exhibit a hydration rate peak si…
A set of chiral, amphiphilic, self-assembling discotic molecules based on the 3,3'-bis(acylamino)-2,2'-bipyridine-substituted benzene-1,3,5-tricarboxamide motif (BiPy-BTA) was prepared. Amphiphilicity was induced into the discotic molecules by an asymmetrical distribution of alkyl and oligo(ethylene oxide) groups in t…
About a century ago, researchers first recognized a connection between the activity of environmental microorganisms and cases of anaerobic iron corrosion. Since then, such microbially influenced corrosion (MIC) has gained prominence and its technical and economic implications are now widely recognized. Under anoxic co…
Poly(2‐(3‐butenyl)‐2‐oxazoline)s (PBOX) with glucose‐S‐butyl (Glc) and perfluoroalkyl‐S‐butyl (F) side chains (three samples: Glc/F = 100/0, 0/100, and 88/12) are synthesized by ring‐opening polymerization of 2‐butenyl‐2‐oxazoline and thiol‐ene click photochemistry, and their thermal properties are analyzed by direct‐…
The performance of four different shaped sonochemical reactors (cylindrical, conical, double cone and pyramidal) were characterized in terms of residence time distribution, calorimetric energy efficiency and methyl orange degradation under three flow rates (10, 20, and 30 mL min –1 ) and two flow directions in a conti…
Recently, it has been predicted that Ta4AlC3 is likely to exhibit an (α–β) polymorphic transformation at temperatures above 1873 K. However, recent X-ray diffraction and transmission electron microscopy experiments suggest on the other hand that the α phase remains stable up to temperatures close to the limit of exper…
The use and handling of par- ticulate material between 1 and 100 nm, also known as nanotechnology, has been shown to have potential to revolution- ize many aspects of industries, medical practices and the human environment. However, very little is known about the risks and hazards of nanomaterials to humans and the en…