es ist mehr als 100 jahre, das auf der welt die gewinnung von eisen und stahl auf basis von roheisenerzeugung im hochofen erfolgt, in letzten jahren sind die moglischkeiten zum eisengewinnung mit reduzierenden gasen auf verschiedenen verfahren untersucht und zum teil breits in halbtechnischen versuchsanlagen erprobt. in dieser arbeit wird em uberblick auf samtlichen eisengewinnungsver, fahren s...

The hydrostatic extrusion is a new method of extrusion process. The most important advantage of this method is reduction of friction and close tolerance for the coating thickness. In this study, the hydrostatic extrusion simulation of bimetallic wires has performed using of finite element method. In the following the advantages of hydrostatic extrusion compared to the direct extrusion are prese...

The Casimir force between an aluminum-coated plate with small sinusoidal corrugations and a large sphere was measured for surface separations between 0.1 and 0.9 mm using an atomic force microscope. The measured force shows significant deviation from the perturbative theory. The measured Casimir force between the same sphere and flat plate shows good agreement with the same theory in the limit ...

Erratum to ‘‘Effects of horizontal and vertical additive disparity noise on stereoscopic corrugation detection’’ [Vision Research 41 (2001) 3133–3143] q Stephen Palmisano *, Robert S. Allison , Ian P. Howard c a Department of Psychology, University of Wollongong, Wollongong, NSW 2522, Australia b Department of Computer Science, York University, Toronto, Ont., Canada, M3J 1P3 c Centre for Vision...

Six-dimensional quantum dynamical calculations of the scattering of H2 from a Pd (100) surface using a potential energy surface derived from density-functional theory calculations are presented. Due to the corrugation and anisotropy of the PES strong off-specular and rotationally inelastic diffraction is found. The dependence of the diffraction intensitities on the incident kinetic energy is cl...

Forging dies at high temperatures are under contact pressure, variable mechanical loads and thermal shock, furthermore they should withstand wear and friction in a high level. So, in order to increase die life, the selection of die material, coating and hardness is essential. In this review, various methods used for die life enhancement such as carbide coating, using the super alloy stellite 6 ...

The addition of a single sheet of carbon atoms in the form of graphene can drastically alter friction between a nanoscale probe tip and a surface. Here, for the first time we show that friction can be altered over a wide range by fluorination. Specifically, the friction force between silicon atomic force microscopy tips and monolayer fluorinated graphene can range from 5-9 times higher than for...