Materials Literature
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Cu-15Cr-0.1Zr in situ composite was fabricated by cold drawing and intermediate heat treatment.Results of experiments demonstrate ultimate tensile strength of the in situ Cr fiber reinforced composite reaches 1200 MPa,electric conductivity reaches 73% IACS.The evolution of microstructure and mechanical properties of t…
PCB thickness is necessary to strictly control in the manufacturing process of PCB.Before the mass-produce,the estimation formula of PCB thickness distribution is obtained through measuring the board thickness of the test board and using the least square method to analyze those data in Excel or MATLAB to achieve curve…
Silane-organic inhibitor composite film was prepared by impregnation at 50 ℃,and urea was added to improve the film.Corrosion resistance of aluminum tube surface with these two films were studied by collecting hydrogen experiment,neutral salt spray test and electrochemical methods.The neutral salt spray test results s…
Objective:TO systematically study the pharmacognotial function of Piloselloides Hirsuta from Yunnan province.Method:By source identification,material morphology,microscopic characters,physical and chemical identification to study Piloselloides Hirsuta.Result:The Pharmacognosy Features is in detailed description.Conclu…
AIM: To investigate the implantation of matrigel carrying human adipose-derived mesenchymal stem cells to enhance the cell survival and the improvement of the ventricular functions in infarct heart.METHODS: Human adipose-derived mesenchymal stem cells(ADMSCs) were isolated and cultured from adult adipose tissue.SD rat…
Taking rich iron-nickel slag and fly ash as main raw materials,the the glass-ceramic of R2O-MgO-Al2O3-SiO2 series was prepared.Meanwhile,based on the feasibility analysis of iron recovery from slag,the effect of Li2O,Na2O,and K2O on reduction rate of iron was studied.The result showed that the preparation of glass-cer…
Ni-P-coated carbon nanotubes particles were prepared using electroless plating method.Composite powder was heat treatment at 400℃and 700℃,respectively.The morphology,crystal struck,conductivity and dielectric property of composite powder were investigated.It is found that the carbon nanotubes powder is successfully co…
Objective Preliminary research the tissue engineered skin material in the process of rabbit skin wound rehabilitation.Methods The porcine acellular dermal matrix(pADM) based tissue engineering materials which were prepared with rabbit fibroblast were employed to the healing of skin wound.The processes were observed an…
The thick diamond films were deposited uisng DC arc plamsa jet CVD.The influence of substrates temperature on the growth and stress of the diamond films were investigated by SEM,Raman spectra and XRD.The results shown that the thick diamond films deposited at 950 ℃ exhibited excellent crystal quality and high diamond…
Some shortcomings exist in the Ultra-fine explosives,such as easily to reunite in the processing.In order to solve these existing shortcomings and improve the security of products,Gas Anti-Solvent(GAS) technology was used in the process of Hexanitrohexaazaisowurtzitane (CL-20) ultra-fining crystallization and the cont…
The superfine cuprous oxide powder was prepared with hydrolysis method.The influence of dispersant dosage,reaction temperature and reactant formulation on the of morphology and particle size of the superfine cuprous oxide powder was investigated by using single-factor experiment,and the sample prepared was characteriz…
The nanometer TiO2 powders doped with La3+ in a molar fraction of 2% was prepared from Ti(OC4H9)4 and La(NO3)3 by sol-gel processing.The influence of thermal treatment processing on the photocatalytic activity of TiO2 was investigated through degradation of TNT.The results showed that the fitting thermal treatment tem…
The difference between properties of onecomponent fluorocarbon coatings obtained from two crosslinking systems of blocked isocyanate and amino resin was studied with FEVE (fluoroethylene vinyl ether) resin as film forming substance. The results indicated that the properties of the coating with blocked isocyanate as cr…
The organic surface modification of nano-TiO2 was studied with sodium stearate and sorbitol,by using the orthogonal experimental,the effect of all the factors(concentration,the amount of modifier,time,mixed proportion and temperature) are discussed on the degree of oleophilic,activation and settlement volume.The optim…
To solve difficulties of mechanical properties test of SiC hard coating,depth-sensing indentation method was used to evaluate the hardness and elastic modulus of SiC hard coatings.Common glass and stainless steel are adopted in this test for comparing and to understand the reliability.CVD SiC hard coating with the thi…
The present situation and progress in research on twinning induced plasticity (TWIP) steel are summarized. Based on the introduction of alloying elements for TWIP effect, the distinguishing features, such as microstructures and mechanical properties of the different compositions series of TWIP steels, i.e. Fe-Mn-Si-Al…
Rice husk silica was prepared by burning rice husk treated with the 10%(volume fraction)HCl at 600℃.γ-Glycidyloxipropyltrimethoxysilane(KH550)was used to modify rice husk silica surface.The structure,morphology,and size distribution of modified and unmodified rice husk silica were investigated by Fourier transform inf…
Objective: To study the ultrapathological and diagnosis classification of epidermolysis bullosa(EB) by using electron microscopy.Methods: The skin biopsy specimens were obtained from 22 patients with EB and processed by routine thinsection electron microscopy.Results: Under electron microscopy,22 cases were diagnosis…
PVP /Zn(CH3COO)2 /Fe(NO3)3 composite nanofibers were prepared,and by high temperature sintering of the above precursor fibers,ZnO-Fe3O4 composite nanofibers were successfully obtained.Field-emission scanning electron microscope(FE-SEM),energy dispersive spectroscopy(EDS),thermal gravimetric analysis(TG),fourier transf…
Taking blast furnace dust bag,silica,calcium oxide and aluminum oside as the main raw material,Cao-Al2O3-SiO2 system glass-ceramic was prepared by melting method.The effect of dust bag content on the crystallization behavior in the glass ceramic was investigated using differential scanning calorimetry(DSC),scanning el…