At the present time, three different definitions of bainite are in widespread use. One is thegeneralized microstructural defillition, wherein bainite is the product of a non-lamellar,competitivemechanism of eutectoid decomposition in which both eutectoid

The working mechanism of Scanning Tunnelling Microscope(STM),which is a novel surfaceanalysis apparatus with very high resolution,is briefly introduced. Some of those important experimental results as to the STM investigation of the atomic structure and s

Using internal friction, electrical resistance,dilation amd X-ray diffraction methods the phase transformation and shape recovery of samples containing strain-induced martensite in Fe-20Mn(No.1 alloy)and Fe- 29.44Mn-6.02Si(No.2 alloy) were investigated.

Five experimental steels with separate or combined 1-2% Ni and Si additions on the basis ofcomposition of GD steel were made. The tests of hardness,compression, impact and fracture toughness forfive steels oil--quenched at 900℃ followed by tempering in th

The low-temperature fractrure behavior of 16Mn steel suffered from the hot-strainingembrittlement (HSE) with a strain of about 8%. has been investigated, It is indicated that the by is increasedand the cleavage characteristic stress Sco is hardly affected

The oxalate precipitated method can get oxalate precipitation by adding oxalic acid intodissolvable zirconic acid of a suitable amount or NH4OH into the solution of zirconium oxalate complex, andunder less than 400t,the ZrO2 powders can be given. However,

A new procss (slope transition and remelting) has been developed to get Al2O3-based composite coating with high bonding strength, heat resistance and spalling resistance for thermal barriers by theoxyacetylence--fi ame--spray. C opper was used as substrat

By using XRD and SEM the phase structure, microstructure and electrical properties ofZnO-Bi2O3-TiO2 system were studied at different annealing temperatures. It is found that the varistor becomes stable at annealing temperafure less than 500℃. The breakdow

A new type of sulphoaluminatae-MDF cement with the long-term stability and larger bending strength is going to be prepard. The chemical action mechanism of KH and PVA in this cement is investigatd.Three samples about C4A3S, KC and PC are analysed by means

The crosslinking and pyorlysis of LPSZ/ DVB system have been investigated by means ofTG-DTA,IR, XRD, SEM and element analysis. The experiment results show that the crosslinking occursaround 150℃ in the case of catalyst. The reaction mechanisms are in both

The investigations on difunctional epoxy(DEGBA)/4, 4-diaminodiphenylsulfone(DDS)system(I)and DEGBA/tetraethylenepentamine(TEPA)system (Ⅱ), both of which were modified withpolycarbonate(PC)by melting process are reported. Dynamic mechanical spectroscopy (D

The fracture surface roughness of several polymers are measured by means of vertical sectionfracture profile method in present paper. The experimental results show that the measuring value of fracturesurface profile roughness parameter RL are effected by

The purpose of this work is to study the effeCts of Sicw. addition on the mechanical and electric properties of MoSi2 composite. The 20v-%Sicw. / MoSi2 composite material used in this strdy was prepared by wet mixing and hot pressing techniques. The bulk

Natural biomaterial--bamboo--is investigated as a compostie matenial on macro,meso- and micro-scale. The macrostructre of bamboo can be treated as one-end-fixed column, the relationbetween its external ne-cural moment and the cross sectional fie-cural mod