Materials Literature
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Time-resolved fluoroimmunoassay(TRFIA) is a novel supermicro analysis in vitro that uses lanthanide chelate as detectable label.In recent years,TRFIA has been developed quickly because of its much higher sensitivity and accuracy than other radioimmunoassay methods.This article reviews the development of TRFIA,with res…
The corrosion mechanism of the overhead condenser of atmospheric and vacuum distillation unit in petrochemical industry was introduced.Types and current situation of corrosion inhibitors were described.The inhibition mechanism of inhibitors was analyzed,and evaluation methods of inhibitors were discussed,and the devel…
The surface of X70 pipeline steel welded line was treated by laser shock wave,and the corrosion performances before and after laser shock processing were analyzed by salt spray corrosion test in artificial atmosphere.The surface morphologies,chemical elements and phase constituent were observed with SEM(scanning elect…
The laser remolten layer was made on the Inconel 690 alloy tubes by using electroplated chromium and laser irradiation.Through the scanning electron microscope(SEM) and energy dispersive X-Ray spectroscopy(EDX),the microstructure of the electroplated coating and the laser remolten layer was investigated,as well as the…
It is found by inspections that the oil pipeline between BZ 34-1 Oilfield and Friendship FPSO exists defects with the corroded depth more than 50% wall thickness(the maximum is 85%) at different positions.So evaluating the residual strength and remaining life of the pipeline is necessary.Four codes,i.e.ABS,API,B31G an…
Based on the comprehensive utilization of used magnesite-chrome brick,magensite-chrome castable were prepared with magnesite-chrome brick.Influence of corundum-chrome slag on the property of magnesite-chrome castable was researched.Bulk density,apparent porosity,cold crushing strength,thermal shock resistance and slag…
Na-montmorillonite was modified with allyl-tri-phenyl phosphonium bromide(AP)to obtain organic MMT(OMMT).The OMMT/BMI nanocomposites were prepared via in-situ polymerization,and the mechanical properties of the nanocomposites were studied using mechanical testing machine and SEM.The results showed that the nanocomposi…
Tussah silk fibroin(TSF) is one of the excellent potential biomedical materials due to its biological compatibility,low biology immune response,and cell affinity.Electrospun nanofibers have been acquired using the TSF as raw material and water as solvent.The morphology,conformation and crystal structure of the nanofib…
Hyperbranched polymer(HBP) was synthesized from phloroglucinol(as the central core),1,2,4-trimellitic anhydride,and epichlorohydrin,and then hyperbranched polymer electrolytes(HBPE) with terminal alkylimidazolium cationic groups were prepared by using the peripheral chlorine group of synthetic HBP to react with N-meth…
Objective:To compare the cytotoxicity of three types of fiber post.Methods:CCK-8 assay was used to test viability and proliferation of carbon fiber post,glass fiber and quartz fiber post pile leachate on MC3T3-E1 cell.Relative growth rate(RGR)of cell were calculated and the cytotoxicities were graded.Results:RGR value…
With Zn(CH3COO)2·2H2O and Mg(CH3COO)2·4H2O as raw materials,magnesium-doped ZnO films(Zn1-xMgxO,x=0,0.1,0.2,0.3) were prepared on quartz glass as substrates by sol-gel method.The crystal structures and transmission spectra of the samples were measured by XRD and spectrophotometer respectively,and then the average grai…
In order to solve the problems of uneven stress at key points on some important parts of the single-roller friction continuously variable transmission(CVT) now commonly used in practice,it was developed that a new type of multi-roller friction CVT inspired by the structure of single-roller friction type CVT and using…
The core-shell emulsion containing Butyl Acrylate(BA) and Styrene(St) in shell and Vinyl Acetate-Ethylene(VAE) in core was successfully prepared by seeded emulsion polymerization without the addition of any emulsifier.Several key elements related to the polymerization,including reacting temperature,Ammonium persulfate…
The relations between heat treatment and structure,properties of R60705 Zr alloy were studied by mechanical properties test and microstructure analysis.The results show that the comprehensive mechanical properties of R60705 Zr alloy after heating at 870 ℃ and quenching in water+aging at 550 ℃ is superior to others.The…
M3 and Nb-containing MN high speed steel billets were prepared via spray forming.The hot compression deformation behavior of as-spray formed MN was investigated on Gleeble-1500 hot simulator at the temperature of 950-1150℃,strain rate of 0.01-10s-1 and maximum true strain value of 0.7.The hot deformation activation en…
(0.98-x)Bi1/2Na1/2TiO3-xBi1/2K1/2TiO3-0.02Bi(Zn2/3Nb1/3)O3(abbreviated as(0.98-x)BNT-xBKT-0.02BZN,x=0.1,0.15,0.20,0.25) was prepared by traditional solid sintering methods,we studied the influence of different sintering temperature on its piezoelectric and dielectric properties.These results suggested that piezoelectr…
The electrochemical corrosion behavior of a composite coating of Al-rich epoxy/Zn-Al galvanizing for Q235 steel was studied in 5%NaCl solution using open-circuit potential monitoring,electrochemical impedance spectroscopy(EIS),scanning electron microscopy(SEM) and neutral salt spray test.The results indicated that the…
There are various synthetic methods of polyepoxysuccinic acid sodium which all include two main steps of epoxidation and polymerization.To probe into the epoxy reaction mechanism and the polymerization reaction mechanism of the synthesis of polyepoxysuccinic acid sodium.
The air-stable HSe-ion was prepared by solid-state reducing element Se using KBH4 in triethanolamine(TEA) at ambient temperature.The orange precursor or intermediate was obtained by the reaction between HSe-ion and ZnSO4·7H2O in TEA.The results of organic elemental analysis,ICP analysis,IR and UV-Vis spectra indicate…
Five elements(i.e.,C,Ni,Cr,Cu and Mo) in stainless steel(CD4MCu) were determined by photoelectric direct-reading atomic emission spectrometry.Accuracy and precision of the method were improved by correction of interferences of co-existing elements,increasing number of standard samples used in preparation of standard w…