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。
Cr,GLC(graphite-like-carbon) and CrTiAlN nanoscaled coatings are deposited by using magnetron sputtering on 45 steel and 40Cr steel of different yield-strength ratios.The influence of the coatings on the ability of elastic deformation of metal matrix is investigated by measuring the changes of elastic modulus and yiel…
Mesoporous molecular sieve was hydrothermally synthesized using kaolin and sodium silicate as silicon sources.The sam-ples obtained were characterized by X-ray diffraction,Fourier transform infrared spectroscopy,thermal gravimetric?differential scan-ning calorimeter,N2 physical adsorption,scanning electron microscopy(…
Using ultra-fine graphite powders and hexagonal structural BN powders as raw materials and SC coal pitch as a binder,graphite blocks doped with BN powders were prepared by a hot-pressing method.The influence of BN doping content on the oxidative weight loss of doped-graphite at 600℃,900℃ and 1000℃ was investigated.The…
Fiber reinforced plastic(FRP) rubber isolator is made by replacing the steel reinforcing elements of multilayer elastomeric isolation bearings by fiber reinforcement.Former experimental and theoretical researches have shown that FRP rubber isolator has equivalent performance in shear deformation capacity and vertical…
To discuss the carrying capacity, life, transmission quality, manufacturing costs of finishing scraping the carburized hardened dou ble-arc gears , based on the contactfatigue,load performance and other aspects in comparative test,comparing the shaved hardened double-cir cular-arc gear and hardened surface involute ge…
Physics constant of 1Cr11MoNiW1VNbN stainless steel is mensurated by a great deal experimentation research.Mechanical properties and microstructure of this material is researched.The best heat treatment technic is ascertained.
Compact and well-adhesive copper and tin coatings were electroplated on aluminum foils,which were treated previously by plasma cleaning and magnetron sputtering of a mid-layer Ni–Cu alloy coating. The effects of the voltage during plasma cleaning,the negative bias voltage in magnetron sputtering,and the composition of…
Zinc borate is an inorganic flam retardant with environmental protection function.Its characteristics are good-stability,low-toxicity and no-smoke.This article summarizes the main property,the inflaming retarding mechanism of zinc borate and the preparing processes of zinc borate nanoparticles.The preparation of zinc…
Black Ni-Cu-P coating was prepared on steel surface by electroless plating.The effect of blackening agent on coating surface colorand factors affecting coating performance were studied.The optimal parameter was as follows: 28g/L NiSO4.6H2O,30g/L NaH2PO2.H2O,15g/L Na3C6H5O7.H2O,1g/L CuSO4·5H2O,8g/L KCNS,15g/L CH3COONa,…
In order to analyze the effect of geometric parameters on the structural integrity of wheel-shaped grain,and provide reference for the design of solid motor grain configuration,the parameterized model is constructed on the basis of finite element software MSC.Patran/Nastran.The maximum Von Mises strain variation with…
Differential scanning calorimetry(DSC) analysis was used to systematically study the effect of different concentrations of Na+,Ca2+ and H+ on the thermal denaturation temperatures of type I and type II collagens from whale sharp skin.The type I collagen had maximum absorption at 233.05 nm and the type II collagen at 2…
Microwave absorbing properties of the composites containing ACFs were investigated.The results show that the absorbing performances of the composites containing ACFs are affected greatly by the fiber contents and distribution in the absorbing layer.In this research,When ACF contents(mass fraction) of four structure la…
Utilization of dust from 400 series stainless steel for compound injection to dephosphorize and recycle of chrome in hot metal was studied.Possibility for recycle of chrome was calculated and the recovery of chrome was high.Compared with single injection,compound injection with dust results in a lower amount of silico…
The 30Ni4CrMoA steel screw bolt of a certain engine fractured after it had been used for approximate 200.By means of optical microscope,SEM and conventional test methods,the fractured screw bolt was analyzed with macro-fractography,microstructure,hardness and chemical composition etc.The results show that the damage m…
Objective To observe the changes of neurons and synapses in hippocampus CA1 zone in amyloid protein precursor(APPswe)/(presenilin(PS1dE9) double transgenic mice with transmission electron microscope(TEM),and review the influence of curcumin on the cognitive function of APPswe/PS1dE9 double transgenic mice.Methods All…
The influencing factors of HTPB curing heat are studied through measuring temperature changes of HTPB curing process.The different technological parameters,such as curing parameter,temperature,catalyst,which play important roles in the thermal effect of HTPB curing process,were investigated by single factor experiment…
The reactivity,reaction mechanism and curing process of E-51 epoxy resin modified bisphenol A cyanate ester resins(BADCy) were studied by DSC and FTIR.The thermal properties of E-51 modified BADCy cured products were investigated by TGA.The water absorption and mechanical properties of cured products were also tested.…
The polymer crystallization theory was introduced.The crystallization rate of polyester can be accelerated by adding nucleating agents to the polyester system.The research progress of using the nucleating agents to improve the crystallization rate of polyester at home and aboard were reviewed.It's also given the suita…
The effect of vanadium on the DIFT (Deformation Induced Ferrite Transformation) microstructure coarsening in low carbon steel during the continuous cooling processes and isothermal processes at different temperatures were investigated using thermo-simulator.The results showed that the steel containing a small amount o…
In an isopropanol(iPA)-H2O heterogenous system,boron was used as a promoter and 3-chloro-2-hydroxypropyl trimethyl ammonium chloride(CTA)was used as an etherifying agent to achieve the cationic reaction of cellulose(Cel.).By orthogonal experiments,the factors for degree of substitution(DS)were optimized,and product st…