The reverse transformation has never occurred in a quenched and aged specimen upon heatingfrom room temperature to 320℃ at which the martensite disappears thor
The electric contact is always made of silver and graphite,the electric conductivity of con-tact materials decreases as the graphite content increased.The hardn
The mechanical activation of tetrahedrite Cu<sub>1</sub>2Sb<sub>4</sub>S<sub>1</sub>3 was carried out in a planetary mill.The changes in the surface.and bulk pr
The microstructure of 7050 AI alloy in T74 condition has been studied by means of transmis-sion electron microscopy and dynamical diffraction simulation.It was
The thermodynamics of micella formation,interfacial characteristics,synergistic effectsand interfacial kinetics for synergistic extraction system D<sub>2</sub>
Based on theoretical calculation of electronegativity of groups of flotation reagent andmethod of infrared adsorption spectroscopy,the collection and adsorption
The effects of vacancies on diffusion of interstitial and substitutional atoms as well asinteraction between them in metals were discussed.In the interstitial a