Device useful for plasma coating of surface of substrate by plasma spraying method, comprises anode, cathode, gas feed, wire feed for wire that is meltable by gas heated to plasma temperature, and nozzle for supplying auxiliary gas jet

Device (1) for plasma coating of a surface of a substrate (3) by plasma spraying method, comprises an anode (8) and a cathode (9), between which an arc is generated by applying a voltage, a gas feed, a wire feed for a wire, which is meltable by a gas that is heated to plasma temperature such that molten particles of the wire are transported and deposited in the direction of the surface of the substrate by an atomizing gas jet (12), and at least one nozzle arranged adjacently, preferably in flanking manner to the atomizing gas outlet opening, through which an auxiliary gas jet is supplied. Device (1) for plasma coating of a surface of a substrate (3) by plasma spraying method, comprises an anode (8) and a cathode (9), between which an arc is generated by applying a voltage, a gas feed, a wire feed for a wire, which is meltable by a gas that is heated to plasma temperature such that molten particles of the wire are transported and deposited in the direction of the surface of the substrate by an atomizing gas jet (12) along a beam axis through an atomizing gas outlet opening, and at least one nozzle arranged adjacently, preferably in flanking manner to the atomizing gas outlet opening, through which an auxiliary gas jet, which encloses the atomizing gas jet, or is externally tangential to the atomizing gas jet, is supplied. An independent claim is also included for plasma spraying method for using in the above device, comprising generating the arc between the anode and the cathode, supplying a gas and heating it to plasma temperature, supplying a wire-shaped spraying material such that molten spraying material is deposited on the surface of the substrate by the atomizing gas jet, and generating the auxiliary gas jet. Die Erfindung betrifft eine Vorrichtung (1) und ein Verfahren zum Plasmabeschichten einer Oberfläche (2) eines Substrats (3), wobei die Vorrichtung (1) mit einem Brennerkopf (4) ausgestattet ist, welcher am unteren Ende eines eine nicht dargestellte Gaszuführung aufnehmenden Brennerschafts (5) angeordnet ist. Der Brennerschaft (5) der Vorrichtung (1) ragt in einen inneren Bereich des hohlzylindrischen Substrats (3) hinein und ist um eine vertikale Achse (6) schwenkbeweglich angeordnet. Auf diese Weise kann eine die Innwandfläche bildende Oberfläche (2) mit einer Beschichtung (7) versehen werden, indem der Brennerschaft (5) rotierend angetrieben wird. An dem Brennerschaft (5) ist eine Drahtzuführung (10) für einen Draht angeordnet, welcher dem auf