Eutectic Corporation

Metallgesellschaft Aktiengesellschaft

Leybold-Heraeus Gmbh

Otto Knotek

Erich Lugscheider

Wolfgang Wichert

Michael Scherer

Bernd Hensel

Wolf-Dieter Munz

Gerhard Kruske

Process and apparatus for coating a tool with a layer of a compound which contains at least one of carbon and nitrogen and at least one of titanium, zirconium, chromium, tungsten, tantalum, vanadium, niobium, hafnium and molybdenum. The apparatus includes a vacuum chamber and a substrate holder for accommodating at least one tool with the substrate holder at a bias of between -40 and -200 V relative to ground. The apparatus includes at least two magnetron sputtering cathodes disposed in mirror symmetry to the substrate holder. The target contains at least one metal selected from the group consisting of T, Zr, Cr, W, Ta, V, Nb, Hf and Mo. The apparatus includes at least one gas source for supplying the vacuum chamber with a noble gas and a reaction gas. The reaction gas contains at least one of nitrogen and a gaseous carbon compound. The apparatus includes at least one anode in the edge region of each target so that the anodes are positioned in mirror symmetry with respect to the target holder. Each of the anodes is connected to a voltage means for applying a voltage of +10 to +200 V relative to ground.

Process for equipment to coat tools for machining and forming techniques

A nickel-base alloy which is resistant to corrosion, abrasion, erosion, cavitation and temperature cycles and possesses a high high-temperature strength, consisting essentially of the following composition in percent by weight:

Nickel-base alloy

A nickel-base wear and corrosion resistant alloy is provided containing by weight about 20% to 35% Cr, about 1% to 8% Si, about 1.7% to 3.5% C, 0 to 15% W and the balance essentially at least about 40% nickel, the amount of carbon present in said composition being stoichiometrically related to the chromium content to provide carbides based on the formula M.sub.7 C.sub.3, wherein M comprises essentially chromium, the amount of chromium in said M.sub.7 C.sub.3 compound ranging from about 65% to less than about 100% of the total chromium in said composition, the melting point of said alloy being less than about 1350.degree. C. The alloy has particular use in welding consumables for hard facing, for valve seats, for wear resistant sleeves and bushings (castings) and other uses.

Wear and corrosion resistant nickel-base alloy

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Aachen, Germany

Otto Knotek