Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Alantum Europe Gmbh

Kjellberg Finsterwalde Plasma Und Maschinen Gmbh

Vale International S.a.

Thomas Weissgaerber

Dirk Naumann

Gunnar Walther

Bernd Kieback

Robin Kolvenbach

Lars Torkuhl

Tilo Buettner

Hans-Dietrich Boehm

Alexander Boehm

Volker Krink

Frank Laurisch

Arne Boden

Gerd Lotze

Alexandra Gerstle

Rene Poss

Wolfram Moehler

Christian Immanuel Mueller

Tillmann Andreas

Kerstin Kuemmel

Beate Engelmann

The invention relates to a method for producing open-pore molded metal bodies which have a modified surface. The surface of an open-pore molded metal body said molded body being used as a semi-finished product, is coated with particles of a chemical compound of a metal on particles of the metal which can be reduced or thermally or chemically decomposed in a thermal treatment. After the coating process, at least one thermal treatment is carried out, in which the produced metal particles are connected to the surface of the semi-finished product and/or adjacent produced particles via sintered necks or sintered bridges such that the specific surface area of the obtained open-pore molded body is increased to at least 30 m/l and/or at least by a factor of 5 in comparison to the starting material of the uncoated metal semi-finished product.

Method for producing an open-pored molded body which is has a modified surface and which is made of a metal

An open-pored metal body, which is formed having a core layer (A) consisting of Ni, Co, Fe, Cu, Ag or an alloy formed having one of said chemical elements, wherein one of said chemical elements is present in the alloy at more than 25 at %, and a gradated layer (B) is formed on surfaces of the core layer (A), said gradated layer being formed by intermetallic phase or mixed crystals of Al, and a layer (C), which is formed having aluminum oxide, is formed on the gradated layer (B).

Method for producing an open-pored metal body having an oxide layer and metal body produced by said method

Nozzles for plasma torches are essentially formed from a metal or a metal alloy. To increase the life of such nozzles wear-resistant microparticles of a hard material, preferably a hard ceramic material, are embedded in the metal or the metal alloy, at least in certain regions. The nozzles can be advantageously manufactured by extrusion.

Nozzle for plasma torches

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Dresden, Germany

Thomas Weissgaerber