The tension test and SEM observation of <110> tilt Cu-Bi tricrystal are done, in order to investigate the relation of embrittlement and structure for grain boundary as well as the influence of Bi's segregation in grain boundaries on the microprocess of de

Monocrystals were grown from the zone-melting refined titanium. A specimen with the loading axis parallel to [0001] direction was cyclically deformed within the chamber of a scanning electron microscope. The results indicated that the cyclic strain was ac

The present paper reports a new quasicrystal-related Al43.2Cu56.8 phase. It has an orthorhombic structure with space group Fddd and lattice parameters a=0.8166 nm,b=0.9995 nm,c= 1.4149 nm. Note that their parameters satisfy the relative ratios of a:b:c=1:

The oxidation behaviour of Ti-6Al-4V at the elevated temperatures is studied by using laser surface alloying with Pr. The isothermal oxidation test shows that the addition of Pr changes the structures of a scale of Ti-6Al-4V, controls the short-range diff

The anodic polarization curves of electrodeposited Ni-P. Ni-W and Ni-W-P amorphous alloy films show that the addition of analogous metal P can make the dePOsits corrosion POtential more noble, and the addition of high melting-point metal W can make the cu

There is a significant effect of microalloy elements of C. Al and Ti on the HAZ toughness of 790MPa grade HSLA steel. The AKV (-20℃) and AKV(-40℃) of synthetic HAZ of Al bearing steel at 5kJ/ mm heat input are 104J and 20J respectively which are 4.9 and 1

In order to study the effeCt of weldmatching on the crack propagating behaviour the comparative DT tests have been done on the butt joints of A131 and A537 steels welded with the same kind of the electrode LB52NS. From test results it is apparent that the

Creep of silicon nitride and its composites was reviewed. The effects of processing,additives and reinforcements on creep rate, creep mechanism and creep life prediction were discussed.

A method of dynamic observation of the crack propagation suitable for St,N. and its composites was explored. Applying a limited load on the both ends of a notched beam. the propagating rate of the crack in a sample during 3--point bending can be controlle

a-Si3N4 whiskers without free carbon and other metal alloy impurities have been synthesized from amotphous nanoSi/N/C powders under 0. 1 MPa N2 at 1600℃. The whiskers synthesized have meandiameter of 0. 1-0.5μm and are longer than several milimeters. The

The kinetic processes occurring with the equilibrium restoration in YBa2Cu3O7-x have ben investigated by means of dynamic conductivity measurements. The experiments, carried out in the temperature range from 500℃ to 850℃, show that equilibrium restoration

Epitaxial KTN (x=0.35) eletrooptic thin films were formed on (100) SrTiO3 substrates by sol-gel process.In this peper, wide and narrow scans of XPS analyses were studied on the surface of KTN thin films before and after Ar+ SPuttering for 10min. The resul

An experimental investigation has been done for diamond homoepitaxial growth on(100) diamond substrate by microwave PCVD method. doping and Schottky characterization. The results concern the influence of the reaction gases,carbon concentration, ratio of b

Theoretical models and extensive experimental studies at low growth rates now have well described the morphological transitions from planar to cellular then dendritic with the increase of growth rate during conventinal directional solidifcation. However,

A new kind of optical amplified comPOsite glass which was made of the porous silica glass framework doped with rare earth ions(REIs) is investigated. The REIs were soluted in the solution of the wraPPing system of chloride comPOsites followed by percolati

In this paper. the hierarchical structure in glass fiber reinforced thermotropic liquid-crystalline copolyester was studied by microscopic observation and wide angle X-ray diffraction. Data of dynamic mechanical behaviour were obtained. and Takayanaki's p

Polymeric thin films were deposited in RF glow discharge of propylene monomer. IR and XPS were used to analyse the films. The measurement of electrical and humidity properties of the films was performed. The maximum electrical field strength of the films

In this paper, a study of the BM350(n=7)-LiBF4 complexes is presented. A series of AC impedance measurements in the frequency range 10kHz-10MHz and in the temperature range 25- 100℃ is reported.These solid polymer electrolyte films showed ionic conductivi

The TA2/A3 explosive cladding interface layers have been studied by TEM technique. The results show that the "metallurgical bond" of the explosive-cladding is achieved by local melting and diffusion at the contacted surface. There are microcrystals and a

20 v.% TiC particulate reinforCed NiAl matrix composites have been fabricated by HPES technique. The Vickers hardness and compressive yield strength of the composite were obviously superior to the unreinforced NiAl. In particular, the yield strength of th