Materials Literature
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Diamond-like carbon(DLC) films with good abrasion resistance and high transmittance were deposited on polycarbonate(PC) by plasma-enhanced chemical vapor deposition(PECVD).The effects of technological parameters on properties were investigated.The results show that the abrasion resistance can be improved greatly after…
In order to reduce the pollution produced by polyester fiber wastes and promote resource recycling use,ethylene terephthalate(BHET) monomers were prepared with waste polyester,glycol,polyisocyanate and so on through degrading them by alcoholysis technology.Rigid polyurethane foam was made with BHET monomers.The influe…
The corrosion weight loss of 316L is studied by high temperature autoclaves.XRD,EDS and XPS are used to analyze the corrosion behavior of the 316L stainless steel in high-Cl~- -ethylene glycol solutioa The experimental results show that the passive film of 316L stainless steel generated in high-ethylene glycol solutio…
Continuous power ultrasound was applied to inoculating the AS41 melt,and the effects of inoculating conditions including ultrasonic power(intensity),treating time and treating temperature on the solidification microstructures were investigated.According to the metallographical and macroscopical observation together wi…
Apparel fabric of polyester silk-like has been prepared by 83.3 dtex/72f polyester bright trilobal filament in this paper.Through alkali decrement treatment and low-temperature plasma treatment of the fabric,the wearability of the fabric has been tested.The results showed that after low-temperature plasma treatment,th…
In this paper,it is raised six issues of concern sach as carbon saturation,hardness,microstructure examination etc,which appear in high-speed steel cutters after heat treatment,and pointed out that the heat treatment process should be personalized and enhanced process monitoring,as so to avoid mistakes.
SiC particles reinforced Mg-2.51Zn-0.629Zr matrix composites with different contents of SiC particles were prepared by powder metallurgy.The microstructure and phase composition of the matrix alloy and the composites were analyzed by optical microscopy,scanning electron microscopy and X-ray diffraction.The variation r…
The application of resorcinol-formaldehyde resin in belt compound of TBR tire was investigated.The results showed that,by using resorcinol-formaldehyde resin in the belt compound of TBR tire instead of resorcinol,the physical properties of vulcanizate changed little,H pull-out force and aging resistance were similar,a…
The hollow microspheres/nickel composite materials were prepared by one step γ-ray irradiation in order to improve the application properties. At normal temperature and atmosphere,the hollow microspheres were dispersed in solution of nickel salt,and then added oxidative free radical scavenger after controlling the pH…
More recent studies on catalytic-based simultaneous removal of SO2 and NOX technologies were reviewed,including simultaneous removal of SO2 and NOX technologies based on SCR and aqueous catalytic oxidation technology.By introducing the characteristics of the various processes,problems and future research directions fo…
Using sodium silicate as silica sources,trimethylchlorosilane(TMCS) modified SiO2 hydrogels were prepared by a simple sol-gel process.After immersing and aging,surface modification,solvent replacement and fractional drying,mesoporous SiO2 aerogels were obtained via an ambient pressure drying technique.The density,spec…
Tetramethyl biphenyl epoxy resin(TMBP) was synthesized from 3,3′,5,5′-tetramethyl-biphenyl-4,4′-diol and epichlorohydrin via a two-step method using 18-crown-6-ether as a phase-transfer catalyst.The effect of temperature,reaction time,and phase-transfer catalyst on product yield was investigated.It was found that a ma…
Platinum carbon(PtCx) nanostructure was prepared by ion beam deposition,and its electron transport property was studied.The microstructure and composition of PtCx nanostructure were analyzed by SEM and EDX,the nanostructure size analyzed by AFM,and its atomic structure analyzed by HRTEM.The AC measurement was performe…
Metal dusting is a catastrophic corrosion in Fe-based and Ni-based alloys,which occurs in the hydrocarbon atmosphere at high temperature,the process of metal dusting in low alloy steels is discussed in this paper.According to Hochman-Grabke′s mechanism,the improvement of this corrosion can be divided into three phases…
Pipeline construction in particular terrains such as mountain,Gobi,steep slope,narrow ridge,beach,frozen earth,highway and river crossing,the protection of pipeline,especially of the pipeline external anticorrosion coating,faces great technical challenge.This paper introduces a gravel jacket for mechanical protection…
MgO/La2O2CO3 catalyst prepared by the thermal decomposition of the precursors obtained from the coprecipitation method was tested in low-temperature OCM(oxidative coupling of methane).The result showed that such catalyst could ignite the reaction at Tex=460 ℃(external furnace temperature),and hold the reaction for at…
The theoretical result of electron scattered by lithium atom in the rang of 0.1 ～ 20 eV was obtained with the equivalent potential model .Total elastic scattering cross section and differential cross section were calculated and compared with the previous more accurate experiment and other theoretical data.Our work wer…
This article explore ways of strengthening the engine room to solve the problem of some rooms of the load for the relevant projects for reference.
Endothelial microparticles are vesicles of less than 1 μm diameter,shed from endothelial cells in response to activation or apoptosis. They are the markers for the function of endothelium. Studies have shown that endothelial microparticles can exert both beneficial and detrimental effects on inflammatory responses,coa…
Micro-arc oxidation(MAO) is a novel technique,which can in-situ form the ceramic coatings on the surfaces of some non-ferrous metals. The ceramic coatings prepared by MAO show good adhesion with the substrate and excellent mechanical properties. The basic principle of the MAO technique on aluminum alloys is introduced…