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。
Quantum dots with high fluorescent efficiency,large Stock′s displacement,as well as the unique wide excitation narrow emission performance,have great application value in the realization of high resolution fluorescence bioimaging.Preparation of CdTe quantum dots through aqueous phase method has the advantages of simpl…
In allusion to the technical difficulties of heavy and large section ductile iron flywheel that was prone to producing spheroidization decaying and graphite distortion, the experiments of measuring solidification time of heavy section ductile iron test blocks and the anti- decaying experiments of different types of no…
The inhibition of cinnamomum camphora seeds extract(CCSE)on A3 steel in 5% H2SO4 solution at 25℃was studied by methods of weight loss、potentiodynamic polarization curves、electrochemical impendance spectroscopy(EIS).The results showed that CCSE was a good corrosion inhibitor,and maximum inhibition efficiency was up to8…
Ni/Al2O3,as a type of stable catalyst,is used extensively in industrial catalysis,such as catalytic hydrogenation and catalytic reformation. In these catalytic processes,the surface structure often plays a vitally important role for catalytic performance. In this paper,the surface structure of Ni/Al2 O3 catalyst and i…
Self melting Fe55 alloy powders were prepared by water atomization method. Self-melting Fe55 alloy layers with the addition of different CeO2were formed on 45 steel substrate using oxy-acetylene flame spray welding. The effects of rare earth CeO2on the microstructure and performance of the coating of Fe55 self-melting…
Chitosan(CTS) was alkalized by [Bmim]OH basic ionic liquid in this study.Then the alkalized chitosan reacted with alkyl halides to prepare the alkylated chitosan with different substituents.The structures of alkylated products were characterized by IR and1 H NMR.The effects of reaction time,temperature and material ra…
Effectiveness of ozone is an important reason of rubber's aging and modification in atmospheric environment.Based on study of influence of protective wax and microcrystalline wax on aging property of crown compound of OTR tire,this paper carries out experiments on basic performance,wear property,mechanical property an…
It is rather difficult to measure the pore of lattice apron fabric nowadays. To solve this problem,the image processing method is proposed to assay the pores an porosity of the fabric. The scanned image of lattice apron fabric was converted into a binary image by threshold segmentation. The diameter of warp and weft y…
30CrMo,50CrV4thin slab continue casting and rolling low alloy wear-resistant steel were designed.After quenching and low temperature tempering,the abrasion characteristic was researched by low stress abrasion test, and was compared with 45,16Mn,Q235steel.The results show that the relative wear resistance of quenched a…
In order to improve the quality of knitted fabric,approach is done into the reduction of the technology eliminating the nep in the knittied fabric from the aspects including the defected cotton,content of the imature fiber,noil rate;quality of cotton and cotton sliver,material blending,clear-card process,clearing effi…
Thermal decomposition reactions of dolomite samples in the area of Chongqing were investigated by simultaneous TG/DTG experiments, to study the thermal decomposition mechanism. Results show that dolomite samples are calcareous dolomite,and two steps are detected during the thermal decomposition process. With the incre…
In this work, we have studied the dependence of image contrast on different parameters for low voltage TEM by means of image calculation. For pure elastic scattering, we have utilized a semi-experimental model which calculates the image by averaging over the energy distribution of the elastically scattered imaging ele…
The combustion characteristics and thermal behavior of modified double base propellant containing Trans-1,4,5,8-tetranitro-1,4,5,8-tetraaza dacalin( TN AD) were investigated by burning rate test and PDSC. Results show that there was a general increase( greater than 9%)in burning rate when RDX is replaced by TN AD in p…
Polypropylene fiber /polypropylene composites were prepared by hot pressing. Polypropylene long fiber was woven into plain weave and twill weaves respectively. It compared the effect of two forms of weaving on the mechanical properties of the composites,and analyzed the morphology,thermal properties of the composites…
In order to solve the problem of stress corrosion cracking in alumina evaporator,fluorine resin coating prepared by electrostatic spraying was used.The slow strain rate test(SSRT)and fracture morphology test were used to study the coated and uncoated samples.The results showed that the stress corrosion susceptibility…
β-Sialon based on low grade bauxite( Al2O3 in 68wt%) by using combined reduction agents carbon / silicon,carbon / aluminum,aluminum / silicon was studied. Calculated mass change ratio of the specimens after firing,Examined Phase composition and microstructure of the specimens by using XRD, SEM and EDS,Examined the rel…
The microstructure and property of vanadium micro-alloyed steel bar of different nitrogen content was studied by production test and existing great research results.The results show that the grain size of steel bar did not change with the increase of nitrogen content,but yield strength of steel bar rose,because nitrog…
Using expandable graphite(EG) as synergists,companying with intumescent flame retardant(IFR) flame retardant long-glass-reinforced propylene(LGFPP),the synergistic effect of EG and IFR was researched.Though LOI and cone tests,the results showed that EG and IFR synergies existed with the best synergistic ratio with whi…
To solve the wear resistance of wear parts involving vertical mill,squeeze roller,and wear resistant plate used in cement,power,and metallurgical and mining industries,the iron-based flux-cored wire for hardfacing was developed.The hardfacing alloys with carbon(4%-6%),chromium(20%-35%)and other alloy elements of no mo…
The NaMgF_3 films on the surface of Mg-Nd-Zn-Zr magnesium alloy were fabricated by immersion method.Their corrosion properties were valuated by dripping test,electrochemical test and immersion method,respectively.The microstructures of the original and corrosive samples were observed by SEM and their chemical composit…