thorough investigation has been done into the structure of the deteriorative layer, phase change of the machining surface of zirconia and sialon ceramics with a TEM and x-ray diffractometer etc. This research indicates that it is possible to reduce the residual stress, deteriorative layer and phase change,lower the surface roughness and improve the surface quality by lapping and polishing technology after grinding.
wear-resistance of the metamorphic layer related to(T_p)at the ambitof 4—2000μs hare been studied. The effect of the polarity of the poles and heat treatment processon the metamorphic layer has beeh discussed. This paper made a new uiewpoint concerning distri-bution of hardness wear-resistance of the metamorphic layer.
Structural and optical properties of InAs quantum dots (QDs) deposited on the surface of a thick InGaAs metamorphic layer grown on a GaAs substrate have been studied.
The rise of In content in the InGaAs layer results in the red shift of the photoluminescence (PL) line, so that with 30 at % indium in the metamorphic layer the PL peak lies at 1.55 μm.
The quantitative estimates thus obtained led the authors to important conclusions: first, it was demonstrated that the estimated abundances of elements in the granite-metamorphic layer of the continental crust presented in the classic works by A.P.
New data confirmed that, in the central area of the Barents Sea, the "granitic-metamorphic" layer of the crust with a seismic velocity of 6.2 km/s typical of the Baltic Shield is absent.