Thermal Processes in Electrical Discharge Machining by a Coated Polymer Tool Electrode

Russian Engineering Research - Mathematical models are obtained for the temperature fields at the surface of a coated polymer tool electrode and a workpiece electrode in electrical discharge...     

Managing the Magnetic Properties of NiCo/C Nanocomposites

Russian Microelectronics - The creation of new types of radio-absorbing materials (RAMs) is relevant due to the intensive development of microwave radio electronic devices, their increasing power,...     

Stability of cylindrical shells with cut-outs reinforced by branch pipes

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 4, pp. 21–23, April, 1995.     

Growth of single crystals of GdB6 and examination of their properties

Conclusions Single crystal specimens of GdB₆ free from inclusions of the tetraboride phase were produced. This was achieved using a shielding medium with a relatively low excess pressure of argon ensuring at the same time the high homogeneity of the melt of the zone as a result of intensive stirring.Because of the high work function of the electron of GdB₆ and the instability of this phase at high temperatures, this material is not interesting as a thermoemitter of the electrons. On the other hand, it is desirable to examine in greater detail the tetraboride phase whose thermoemission properties may prove to be considerably higher than those of the hexaboride phase.The region of antiferromagnetic ordering (15.2°K) was characterized by a large jump of the specific electrical resistivity which characterizes the structural phase transformation. At T 7–10°K an additional anomaly of the resistivity accompanied by a temperature hysteresis was detected.Translated from Poroshkovaya Metallurgiya, No. 7(319), pp. 54–59, July, 1989.