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。
MICROSCOPIC STRUCTURE OF LEAD-FREE PIEZOELECTRIC MATERIALS TITANATBARIUM TITANAT-KALIUM NATRIUM NIOBATE SYNTHESIZED WITH SOLID STATE REACTION. Synthesis of piezoelectric ceramic material has been carried out that is environmentally friendly material. The material contains no lead and is a mixture of Bismuth Sodium Tit…
Bimodal mesoporous Al/BMMs catalysts were prepared via the post-alumination method and characterized by XRD,BET,FT-IR,TG,etc.The catalytic performance of the obtained Al/BMMs catalysts with different Si/Al molar ratios have been investigated by using a model reaction of cumene cracking.The results showed that the bimo…
The research progress of preparation methods and properties of thin-/multi-layers based on TiN,TiC and TiB2 compound were overviewed.The application and development of the films were also prospected.
Polypropylene(PP)/mica composites were prepared using melt blending and double-phase blending,separately.Effects of content of mica and blending method on mechanical properties and thermal properties of the composites were studied.The microstructure of the composites was analyzed by SEM.It showed that the interface ad…
It is notable significance to develop new metal material products by physical method for cost reduction and rationality designation of chemical constitution.This article expounds mainly the application situation of thermal simulation tester in the metal material research,moreover debates on the virtue and defect of th…
A method of improving the thickness uniformity of thin film deposited by magnetron sputtering systems was introduced.This method is called the sample stage eccentric axial circumrotating.It can make up or improve the film thickness distribution on the radial direction through the sample stage eccentric axial circumrot…
Two different size of Al-matrix composites with high volume fraction of SiC particles were produced with the new pressureless infiltration fabrication technology.The phase composition,microstructure and fracture morphology of the composite were analyzed by XRD and SEM.The results show that the SiCp/Al composite has ho…
The spectroscopy properties of series hydroxyl-porphyrins for the detection of mercury ions(Ⅱ) were studied to obtain the optimal reaction conditions.The results indicated that coordination reactions between series hydroxyl-porphyrins and Hg2+ were processed in the resolvent of DMF with 0.4 mL Tween-80 as surfactant,w…
The composites of fly ash cenospheres coated with barium ferrite particle were successfully prepared by sol-gel auto-combustion method.The morphology,crystal structure,magnetic properties,electromagnetic properties and microwave absorbing behavior of the samples were characterized by scanning electron microscope(SEM),…
Cracks were found in the castings of gear shifting forks.To study the causes of cracks,chemical analysis,hardness tests and metallographic examinations were carried out.The results show that there are defects such as shrinkage,inter-dendrite slag inclusion and segregation in the shifting fork;and the generation of cra…
The preparation method of alumina whiskers from bentonite was studied.The appropriate process route was determined.The structure,composition and morphology of ammonium aluminium carbonate hydroxide whiskers and alumina whiskers were analysed and characterized by XRD,SEM and TG.The results showed that in the relatively…
The development history,preparation methods and luminescent mechanism of the aluminates long persistence phosphors were systematically introduced and the recent research on aluminates long persistence phosphorescent materials were reviewed.Finally,The further research directions was discussed in this paper.
The polyimide was synthesized from asymmetrical monomer 3,4′-oxydianiline(3,4′-ODA),4,4′-Oxydianiline(ODA) and pyromellitic dianhydride(PMDA) by one-step procedure,to investigate the effect of structure symmetry on the properties of polyimides(PI).The properties of polyimides were characterized by Fourier transform in…
YVO4:Eu3+,Bi3+ phosphors were synthesized by a precipitation method.The structure and morphology of the products were characterized by XRD,FE-SEM,and TEM.The exitation and emission spectra of the products were investigated by fluorescence spectrometer.The X-ray diffraction(XRD) patterns showed that the powder was a bo…
The natural gas pipe hanger(sleeve) of an oilfield was fractured in use.By means of chemical composition analysis,metallographic examination,hardness testing,fracture analysis,micro component analysis and so on,the fracture reason was analyzed.The results showed that the hanger sleeve of 1Cr13 steel was not high tempe…
Synchronous fluorimetry was proposed for the simultaneous determination of propranolol hydrochloride and flunarizine hydrochloride.It was found that satisfactory results were obtained by setting at the wavelength 296 nm for determination of propranolol hydrochloride,263 nm for flunarizine hydrochloride,and wavelength…
Stable CdTe quantum dots(QDs) were synthesized with mercaptosuccinic acid(MSA) as stabilizing agent in aqueous solution.Based on the strong quenching of fluorescence intensity of CdTe QDs by Cu2+ in phosphate buffer,a simple,rapid and sensitive new method for the determination of copper was developed.The influences of…
In order to explore effects of various processing parameters and micro-structure on mechanical property of jute fiber reinforced polyurethane composites,jute fiber reinforced polyurethane composites were prepared by variable fiber injection technology.The influence of jute fiber contents,fiber length and fiber modific…
Two weaving methods of 3D tubular fabric are proposed based on the study of 3D fabric weaving technology and 2D circular weaving method. These two methods are called weft binder method and warp binder method. Forming theory and method are introduced in detail. The difference is that, binder yarns are inserted like wef…
Application of FHI hydroupgrading isodewaxing technology developed by Fushun research institute of petroleum and petrochemicals(FRIPP) in 400 kt/a diesel fuel hydrogenation plant was analyzed.The results show that FHI technology can significantly decrease sulfur content and nitrogen content in catalytic diesel fuel,si…