Influence of the Chemical Composition and Local Atomic Packing of Nanostructured MoSx and MoSex Solid Lubricant Coatings on Their Tribological Properties under Complicated Conditions

Technical Physics Letters - We present the results of a comparative investigation of the friction and wear characteristics of MoSx and MoSex coatings in an oxidizing medium (argon–air...     

Shaping the Toroidal Section of End Mills

The shaping of the toroidal cutting section of end mills is considered. Methods are devised for selecting the positional parameters in shaping the helical rake surface on the toroidal section. Relations are established between the geometric parameters of the end mill in the toroidal section.     

Differentiation of Romashkino crude oils according to biomarker hydrocarbon parameters

The trends in composition of higher biomarker hydrocarbons (steranes and tri-, tetra-, and pentacyclic terpanes) in crude oils from diachronous producing complexes of deposits of the Romashkino oil field, which occurs in the central part of the South Tatarian arch, were studied. On the basis of variations in molecular biomarker parameters that reflect the type of source organic matter and the facies conditions of its accumulation and early diagenesis, the oils are classified with three groups.     

Effect of the oxygen partial pressure on the kinetics of decomposition of the Ba<Subscript>2</Subscript>YCu<Subscript>3</Subscript>O<Subscript>7−δ</Subscript> phase at temperatures <400°C

The effect of the oxygen partial pressure on the spinodal decomposition in the Ba₂YCu₃O₆—Ba₂YCu₃O₇ system has been studied. A decrease in the oxygen partial pressure was found to increase the decomposition rate. The most probable cause of the effect consists in the decrease of oxygen concentration in the near-boundary regions of grains.     

Life Calculations for Header – PGV-1000 Steam Generator Connector Weld Joints under NPP Service Conditions

The procedure for calculating the life of header – steam generator connector weld joints is proposed. It allows for running out the material plasticity reserve upon static cyclic elastoplastic loading as well as operating conditions, local stress concentrations, and residual stresses after welding.     

Nonlinear conductivity and current-voltage characteristics of two-dimensional semiconductor superlattices

Electron transport and heating in a two-dimensional semiconductor superlattice with arbitrary orientation of the field (current) relative to the crystallographic axes is investigated in the approximation of constant energy and velocity relaxation times with electron-electron collisions taken into account. The nonlinear conductivity, average electron energies, and interrelationship between field direction and the current excited by it in an unbounded superlattice, as well as the current-voltage characteristics and the transverse electromotive force of a superlattice of finite width are found. Fiz. Tekh. Poluprovodn. 31, 308–310 (March 1997)     

Results of familiarization of and prospects for a procedure for the burning of wastes in a vortical fluidized bed

Problems that have arisen during tune-up of the production line for the thermal processing of solid household waste by the method of burning in a vortical fluidized bed (principally, a new technology for Russia), and means of their solution are presented. Investigative studies are cited. __________ Translated from élektricheskie Stantsii, No. 6, pp. 20–26, August, 2006.     

Influence of production method on direction of processing heavy Ashal'chinsk crude

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 7–9, June, 1992.     

Effect of prolonged high-temperature loading on the structure of the KhN65VMTYu alloy

A complex analysis of changes in the structure and in the phase composition arising as a result of both a prolonged operation of articles made of the alloy KhN65VMTYu (EI893) and after conducting imitation tests of model samples. The tests for long-term strength using samples cut out from the body of a large-dimension turbine blade which was exploited for 63 622 h showed that the blade preserved a significant residual reserve of service life (at 750°C and 250 MPa, the time to failure is 4243.5 h).