Abstract: A plug for brazing in a through-hole and for sealing a through-hole in a substrate of a gas turbine component. The plug has at least one elongate part and a head, wherein the head is made wider in cross section than the elongate part. The elongate part has a cross section which becomes smaller towards its end face along its longitudinal axis, wherein the elongate part has a peripheral region on its end face, wherein the peripheral region of the elongate part has a brazing filler metal. The head has a peripheral region on its end face, wherein the peripheral region of the head has a brazing filler metal, and the remaining and largest part of the elongate part and of the head has a mixture of brazing filler metal and a substrate material.

Abstract: A method for applying a wear protection layer to a continuous flow machine component which has a base material comprising titanium is provided. The method includes the following steps: mixing a solder which comprises an alloy comprising titanium and particles which are distributed in the alloy and have a reaction agent; applying the solder to predetermined points of the continuous flow machine component; introducing a heat volume into the solder and the continuous flow machine component so that the alloy becomes liquid and the reaction agent changes through diffusion processes with the solder and undergoes a chemical reaction with the alloy, forming a hard aggregate; and cooling the solder so that the alloy becomes solid.

Abstract: Solder alloy based on nickel is composed of a mixture with a first soldering material, a second soldering material, and a base material, wherein the base material is a nickel-based material which corresponds to the material to be soldered and is present in a proportion of 45-70% by weight in the mixture, the first soldering material is a nickel-based material including chromium, cobalt, tantalum, aluminum and boron, and is present in a proportion of 15-30% by weight in the mixture, and the second soldering material is a nickel-based material including chromium, cobalt, molybdenum, tungsten, boron and hafnium, and is present in a proportion of 15-25% by weight in the mixture.

Abstract: A method for applying a wear protection layer to a continuous flow machine component which has a base material comprising titanium is provided. The method includes the following steps: mixing a solder which comprises an alloy comprising titanium and particles which are distributed in the alloy and have a reaction agent; applying the solder to predetermined points of the continuous flow machine component; introducing a heat volume into the solder and the continuous flow machine component so that the alloy becomes liquid and the reaction agent changes through diffusion processes with the solder and undergoes a chemical reaction with the alloy, forming a hard aggregate; and cooling the solder so that the alloy becomes solid.

Abstract: A method for repairing surface damage to a turbomachine component that has a base material which has titanium with the base material having TiAl6V4 and/or pure titanium is provided. The method includes the following steps: mixing a solder that has a titanium-containing alloy and a powder which is distributed in the solder and which has the base material; applying the solder onto turbomachine component areas where the surface damage is located; introducing a quantity of heat into the solder and into the turbomachine component such that the alloy liquefies and the areas are thus wetted; and cooling the solder such that the alloy solidifies.

Abstract: Solder alloy based on nickel is composed of a mixture with a first soldering material, a second soldering material, and a base material, wherein the base material is a nickel-based material which corresponds to the material to be soldered and is present in a proportion of 45-70% by weight in the mixture, the first soldering material is a nickel-based material including chromium, cobalt, tantalum, aluminum and boron, and is present in a proportion of 15-30% by weight in the mixture, and the second soldering material is a nickel-based material including chromium, cobalt, molybdenum, tungsten, boron and hafnium, and is present in a proportion of 15-25% by weight in the mixture.

Abstract: Cadmium-free hard solders having working temperatures of less than 630° C., which are easily workable and yield ductile soldered joints, are composed of 30 to 60% by weight of silver, 10 to 36% by weight of copper, 15 to 32% by weight of zinc, 0.5 to 7% by weight of gallium, 0.5 to 7% by weight of tin and 0 to 5% by weight of indium.

Abstract: A process for producing, on a metallic substrate, a geometric metal structure having a precise contour, including the steps of: solder coating a solder paste onto the substrate by screen printing to create the geometric metal structure, the solder paste comprising an organic binder system, and 80 to 95 weight % of a mixture of a nickel-based solder and a pulverulent alloy of nickel with at least one member selected from the group consisting of chromium, molybdenum, tungsten, manganese and iron, provided as a higher-melting metallic filler, wherein a weight ratio of solder to filler is 2-6:1, an average grain size of the solder is between 10 and 50 &mgr;m, and a grain size ratio of solder to filler, relative to the average grain size is from 0.5-2.5:1; drying the structure; decomposing the organic binder system present in the solder paste, without leaving a reside, by a heat treatment; and raising the temperature until the resulting solder material liquifies.

Abstract: Cadmium-free brazing solders with working temperatures under 630.degree. C. containing 45 to 80 wt. % silver, 14 to 25 wt. % copper 10 to 25 wt. % gallium, 1 to 7 wt. % zinc and 0 to 5 wt. % indium and/or tin. The alloys have good cold workability and ductility.

Abstract: When hard-substance parts are soldered onto steel bases, thermal stresses are produced between the hard substance and the steel. These stresses can be reduced by means of using a multilayer solder in which the middle layer consists of a precipitation-hardenable copper alloy or nickel alloy provided on both sides with a layer of a hard-solder alloy whose working temperature is at least 50.degree. C. below the melting point of the precipitation-hardenable copper alloy or nickel alloy. A tempering treatment at 250.degree. to 550.degree. C. is carried out after the soldering in order to achieve a precipitation hardening of the middle layer.

Abstract: Parts subject to wear having coatings made of hard substances formed by subdividing the protective layer into segmented joint faces and wherein the joint faces interlace to form seams that are as close as possible to each other.

Abstract: Cadmium-free brazing solders with working temperatures under 630.degree. C. containing 45 to 80 wt. % silver, 5 to 13 wt. % copper, 10 to 25 wt. % gallium, 8 to 20 wt. % zinc, and 0 to 5 wt. % indium and/or tin.