Zobrazeno 1 - 6
of 6
pro vyhledávání: '"R. Ya. Petrykina"'
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 8:696-699
1. A study was made of the hot pressing of niobium powder and it was demonstrated that the densification process of this powder may be described within the framework of the theory of volume-viscous flow of porous material. 2. A quadratic relationship
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 9:713-716
1. A study was made of the densification kinetics during sintering by hot pressing of the transition metals, Ti, Cr, Nb, Mo, Re, and W, and also of the carbides TiCX, ZrCX, HfCX, NbCX, and TaCX in their homogeneity regions. 2. The energies of activat
Autor:
L. I. Zhivov, V. M. Litvin, A. P. Lyashenko, R. Ya. Petrykina, V. V. Shcherbina, V. A. Pavlov
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 12:615-618
Autor:
V. V. Shcherbina, F. I. Kolesnik, R. Ya. Petrykina, V. A. Pavlov, V. G. Kucherenko, L. I. Zhivov
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 12:470-473
1. A study was made of a new process for the hydrostatic pressing of large-sized filter elements from titanium powder. 2. Designs of a pilot-plant hydrostatic pressing unit and a hydrostatic installation based on a standard hydraulic press have been
Autor:
L. K. Shvedova, R. Ya. Petrykina
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 11:276-279
1. On the basis of a study of the sintering of transition metal nitride powders by the hot-pressingtechnique, suitable process parameters were established enabling dense nitride parts to be produced. 2. The energy of activation for viscous flow in ho
Publikováno v:
Soviet Powder Metallurgy and Metal Ceramics. 9:389-391
1. A study was made of the sintering, by the hot pressing technique, of molybdenum powder in the temperature range 1700–1900°C. Conditions enabling dense specimens (of 3% porosity) to be prepared were determined. 2. The energy of activation for th