摘要:
Conventionally, cavities and cracks are filled with a solder metal which forms brittle phases with a subsequently applied coating, which have a negative effect on the mechanical properties. According to the invention, the components which form brittle phases are removed from the solder metal (13). The above is achieved, whereby a second material (22) is applied which reacts with said component and which is removed again with the brittle phases (16), before the coating (7).
摘要:
The use of pre-sintered soldering plates, referred to as PSPs, frequently proceeds without a continuous, cohesive soldering connection between individual grains in the sinter material and between the sinter and base material. For this reason, the invention relates to the soldering of prefabricated, perforated, porous or drilled plates (sinter, cast or rolled material) or porous, spongy, laminar material that can be laid full-surfaced on a base element as a plurality of tiles or as individual porous, drilled or perforated inlay elements designed contour-close on a recess in the base material. To this end, the selected plate materials can be mechanically equal to the base material or otherwise set off for the particular requirements of the component insert. The solder can be offset by specific diffusible, melting-point-lowering components. The invention further relates to a mould (4) that has an open, continuous porosity (perforation) (5) so that melted or fluid solder can flow through from the one surface (19) to the other surface (22).
摘要:
Conventionally, cavities and cracks are filled with a solder metal which forms brittle phases with a subsequently applied coating, which have a negative effect on the mechanical properties. According to the invention, the components which form brittle phases are removed from the solder metal (13). The above is achieved, whereby a second material (22) is applied which reacts with said component and which is removed again with the brittle phases (16), before the coating (7).
摘要:
In previously known electrodeposition methods, alloys can be deposited only badly on a substrate from the components thereof. The inventive method allows an alloy layer to be deposited on a substrate (13) by pulsing the current/voltage used for electrode position.