Abstract: The invention relates to a method for the recovery of precious metal from materials containing precious metal, said method comprises the following steps of: A) bringing the materials containing the precious metal into contact with an oxidizing agent, B) bringing the material containing the precious metal into contact with a reducing agent. Said method offers the possibility of recovering precious metal in a simple manner and in high purity from secondary materials.

Abstract: The invention provides a reliably manufacturable flat steel product based on a Fe3Al alloy and a method that allows the production of such flat steel products. For this purpose, the flat steel product is made of a steel which comprises (in % by weight) Al: 12-20%, Ti: 0.2-2%, B: 0.1-0.6%, in each case at least one element from the group “Cr, C, Mn, Si, Nb, Ta, W, Zr, V, Mo, Ni, Cu, Ca, rare earth metals, and Co” unavoidable impurities. The method according to the invention specifies that a molten steel with the stated composition is cast as a precursor in the form of a slab, thin slab or a cast strip, the precursor is then hot rolled into a hot strip.

Abstract: Methods, systems, and devices are disclosed for molecular capture, manipulation, and analysis. In one aspect, a device to aggregate and characterize particles in a fluid includes an electrically insulative substrate including a channel to carry an electrically conducting fluid containing particles, electrodes located in the channel forming a nanoscale opening and including an insulating layer over their surface at the opening, a first circuit to apply a non-uniform ac electric field and a dc bias signal across the electrodes, in which the applied non-uniform ac electric field produces a positive dielectrophoretic force to aggregate the particles in a trapping region including the opening and adjacent region, a second circuit to detect changes in a dc current caused by at least some of the particles in the trapping region, and an optical device that directs a coherent light beam on the opening to determine Raman spectra of the particles in the trapping region.

Abstract: A corrosion-resistant austenitic steel is claimed which, in each case relative to 100 mass percent, contains 20 to 32% manganese, 10 to 15% chromium, a total of 0.5 to 1.3% carbon and nitrogen, wherein the ratio of carbon to nitrogen is 0.5 to 1.5, the remainder being iron and melt-related impurities. The claimed steel can be produced and processed at normal pressure and has TWIP properties. It is in particular suited for producing structural components in constructs, such as in the automotive industry.

Abstract: In a method for making hot strips, a workable lightweight construction steel is used which in particular can easily be deep-drawn cold and includes the main elements Si, Al and Mn, with high tensile strength and good TRIP and/or TWIP characteristics. The mass % are as follows for C 0.04 to <1.0, Al 0.05 to <4.0, SI 0.05 to ?6.0; Mn 9.0 to ?30.0, the remainder being iron with the common incidental steel elements. The melt is cast in a horizontal strip casting unit, close to the final dimensions at calm flow and without bending to form a pre-strip in the range between 6 and 15 mm, and subsequently is fed for further processing.

Abstract: Method for the investigation of the condition of a corrodible surface coated with a polymer, wherein the corrosion potential at the corrodible surface is measured without contacting either the corrodible surface or the polymer coating by means of a Kelvin probe which measures the potential between the corrodible surface and a probe electrode. The potential difference reflects the corrosion potential and, thus, the corrosion condition of the polymer coated surface.