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。
The affects of seeding progress and shoulder controlling process in 100 InP single crystal growth were investigated by home-made high-pressure furnace,using the high pressure liquid encapsulated Czochralski technology( HP-LEC). The diameter of 3 to 4 inch( 1 inch equals 2. 54 cm)twin-free 100 InP crystals can be grown…
The SiO2–BaO system of special glass was prepared by high temperature solid phase method,and SiO2–BaO system of special glass sealing elements were prepared by using SiO2–BaO system glass and carbon steel,alloy and other metal sealing.The influence of process parameters such as the sealing temperature and time,sealing…
Activated carbon was prepared by physical activation with carbon dioxide from sawdust carbon,which was by-product from the process of refining biomass oil.The influence of activation temperature,activation time and the flow rate of CO2 on the methylene blue value of activated carbon were investigated.Based on the expe…
Iron-gallium(Fe-Ga) alloy is a new class of magnetostrictive materials with an excellent combination of large low-field magnetostriction,high mechanical strength,good ductility and low cost.This paper reports the first measurement of the stress corrosion cracking(SCC) behaviors of polycrystalline of Fe-15at%Ga in simu…
In-situ SEM technique was adopted to obtain follow-up observations for the whole process of the internal crack initiation,propagation and finally fracture of the multi-directional braided carbon/carbon composites under load conditions.The results show that:A large number of micro-defects,such as holes and cracks,rando…
Taking natural flake graphite as a raw material,nano-graphene oxide(GO)as a high performance fluid loss additive was prepared by means of the modified Hummers' method.The chemical structure and micro-topography of GO were characterized through a combination of FTIR,XRD,TG and TEM.The performance of GO on fluid loss co…
Polypropylene(PP) was flame retarded with an intumescent flame retardant(IFR) system containing 1,2,3-tri(5,5-dibromomethyl-1,3-dioxaphosphorinanyl-2-oxy)benzene(FR),polyphosphate(APP) and melamine(MEL).The effect of content on flame retarding properties such as limited oxygen index(LOI)measurements,thermal gravimetri…
The solution treatment of A356 alloys was carried out at 525 ℃,535 ℃ and 545 ℃ for 3 h,and the microstructure and properties of the alloys after solution treatment were studied.The results show that,under the three kinds of solution temperature,Si particles were broken off,separated,spheroidizated and homogenizated,an…
The penetration effect of reactive fragment on medium thickness aluminum alloy target aimed at was studied. An experimental equipment was designed in order to study the penetration of single reactive fragment with different impacting speeds, and the pressure propagation process of reactive fragment penetrating aluminu…
Density functional theory(DFT)and slab model were employed to study the adsorption and decomposition of O2 on Pd2 @Au/Pd(100)surface.O2 with its O-O bond parallel to the surface,preferred the Pd-Pd bridge site.The mixing of O2 3σg and 1πu with Pd d states results in the electron transfer from O2 to Pd atoms,on the con…
This article aims to explore morphological characteristics in the neck of the long seat job incumbency male in Jiangsu and Zhejiang areas and provide reference for the collar design of the young men's clothing.The human neck relevant data were extracted by three-dimensional anthropometry,and then the data analysis was…
The co-deposition and electrocrystallization of Cu-Sn alloy in a weak acidic citrate bath were studied by linear sweep voltammetry(LSV), cyclic voltammetry(CV), and chronoamperometry. The Scharifker- Hill(SH) theory model and Heerman- Tarallo(HT) theory model were applied to analyze the chronoam- perometry data. The r…
Two novel thermosensitive benzyl ether dendrimer with oligoethyleneoxy chains,tert-butyl 3,5-bis{2-[2-(2-methoxyethoxy)ethoxy]ethoxy}phenylcarbamate(4) and tert-butyl 3,5-bis{3,5-bis{2-[2-(2-methoxyethoxy)ethoxy]ethoxy}benzyloxy}phenylcarbamate(7),were desinged and synthesized from 5-aminoresorcinol.The structures wer…
Graphene is a new found carbon material and has attracted great academic interests because of its perfect structure and excellent properties.The modification of graphene and/or graphene oxide and their utilization in the fabrication of nano filler/polymer composites with different polymer matrices have been explored b…
The spatial distribution of conductive ions within ice layer during the transition of freezing water from liquid phase to solid phase is discussed,and the physical process of the electrolyte crystallization during phase transition of freezing water with different conductivities in natural environment is researched.Fre…
In order to break the monopoly of porcelain insulating materials in UHV and EHV power transmission project,and reduce the equipment cost,taking Shazhou 750 kV substation as an example,the feasibility of the comprehensive application of high temperature vulcanized silicone rubber insulating materials in 750 kV substati…
HfC coatings were prepared on C/C composites by chemical vapor deposition(CVD) with HfCl4-CH4-H2-Ar system.The microstructure and mechanical properties of the as-prepared coating were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM) and ultra nano-indentor tester.Effects of deposition temperatu…
Currently,the research of protective clothing frequently focuses on the function development,thus cause the sacrifice of clothing comfort performance,which will affect work efficiency of the wearers.The dressed/undressed convenient test,ergonomics test and wear trials of physiological load are carried out with three k…
Ceria doped titanate nanotube was proved to be a promising DeNOx catalyst with good activity,perfect selectivity,and superior resistance to alkali/alkaline earth metal poisoning.This paper investigated the influence of calcination temperature on the selective catalytic reduction(SCR) performance and physicochemical pr…
The tooth stiffness was calculated by the analytical method and the finite element method.The tooth profile modification mechanism and the influence of machining errors on loadsharing ratio,transmission errors and temperature fields were analyzed by stiffness method.The results show that the long modification is super…