The stereographic morphology of a dendrite γ'is octet of branches characterized in<111>direction. With the extension of ageing time, the surface of dendritic γ'formed during the initial stage will split into numerous small cubic γ'which array in a given o

By using XRD to determine the macroscopic residual stress in textured materials,the linear behaviour of the classical sin2ψ-law does not hold because of elastic anisotropy caused by the presence of textures.In order to obtain an approximately real relatio

The effeCt of machine compliance on the hardness and elastic modulus was studied using the YY-I indentation tester.It is evident that the machine compliance mainly influences the slope of the unloading curve,and must be subtracted in the test.This is par

The mechanical properties and fatigue crack growth behavior of 20G and 15CrMo steels after hydrogen attack at different temperatures under the hydrogen presence of 18MPa for 240h have been investigsted.The effeCt of the stress ratio on the fatigue crack

In this paper,the preparation of Mo nanopartiele and its measurement about it thermal flux amount varity with temperature were introduced. Based on the experiment,mathermatical simulation of specific heat curve has been made by the method which is three P

The effects of Al content on microstructures and properties of(Ti,Al)N coatings were investigated.It is shown that there are three competitive preferred orientations in (Ti,Al)N,their diffraction intensity have different cbange tendency with increasing of

Crystallization kinetics of Fe73.5Cu1Mo3Si13.5B9, amorphous alloy was studied by using DTA,XRD and TEM methods.Results show that the crystallization temperature of a-Fe phase in this alloy is 478℃.The activation energy at beginning stage is the smallest (

Solid state lasers have undergone a renaissance since the development of reliable and cheap laser diodes which can be used as pump sources. The result is compact,effident laser sources which are attractive for a wide range of applications. The properties

The preferential intra-agglomerate sintering from 600℃ to 1200℃ of the cubic ZrO_2 crystallites was observed by TEM.When sintering temperatures were≤1000℃,the ZrO_2 crystallites'average diameter was≤100nm.They have an equilibrium morphology of hexagon. Th

In this work,the hand-grinding experiments with four abradants were used to study the Stress-induced martensite transformation in Ce-TZP and Y-8Ce-TZP ceramics.The volume fraction of monoclinic martensite was measured by XRD.The effects of frictional stre

The Sr2SiO4:Eu3+,Bi3+;SrSiO3: Eu3+, Bi3+ samples were synthesized at high temperature and high pressure.The effect of high pressure on the structure and luminescence properties of samples were studied. For the comparison,the samples were also prepared by

PLZT thin films with good ferroelectric properties were fabricated using the sol-gel method on platinized silicon.The processing parameters affecting the microstructure and electric properties of thin films were investigated. Suitable concentration and hy

The granularity distribution characteristics of powder were studied by the fractal geometry.It was found that there is a linear relationship between the accumulahve weight cotent and the grain size in log-log plot for many materials,and it shows that the

The purpose of this work is to study BaO-TiO2-SiO2 optical glass with suitable for pratical use free of rear earth oxide. By using calculating system of glass physics property,the glass composition were designed,and the composition range for forming suita

The surface Zeta electric potential of carbon black Particles modified with surface grafting polymer-KCl aqueous solution system was investigated.Adsorbability of sodium laurylbenzene sulfonate (LAS)or N-lauryl benzyldimethyl chloride(1227)molecules on no

"Living" anionic and cationic polymerization techniques are usually used for controlled block polymerization of vinyl monomers.A fundamentally new method with several advantages over the existing processed was reported in 1983 for the polymerization of ac

The tensile properties of 3D carbon/carbon composite at ultra-high temperature have been studied based on rapid resistive self-heating technique. This paper also describes a mini-finite element model for evaluation of high temperature elastic modulus of 3

An investigation on the test method for measuring the interfacial debonding fracture energy of fibre pull-out from matrix was presented.The formula of fibre/matrix interfacial energy release rate GⅡis derived to look into its validity.Comparison calculati

Silica aerogels are nanoporous materials produced in a sol-gel process followed by supercritical drying.The tenuous solid skeleton and the nanosized pores of the materials lead to very low solid and gaseous thermal conductivities.The radiative conductivit

Using the method of acoustic enussion,the time senes of deformation and fracture of dumbbell fiber-reinforced Composite is obtained.It is found that then is the Correlation fuhotlon of the attractor and the dimenslonality,D of the attractor is 2.3.The min