| 摘要 |
1. Process for the manufacture of a multicomponent, congruent melting soldering material, in which a preform, which can be a soldering foil or wire or one of the two parts to be soldered itself, of a first component of the soldering material, is coated with one or more further components in such a way that in the subsequent soldering process the soldering material is converted into a homogeneous phase of eutectic composition with a component of a brittle phase, characterized in that the preform is placed in a coating apparatus and in a first process step is freed from possible oxide layers and/or impurities adhering to the surface by means of measures known in themselves and specific to the coating process concerned, that in a second process step the preform is coated with one or more other components, and that in a last process step in a boundary zone of the coated preform all components are mixed mechanically and/or by diffusion at temperatures below the eutectic temperature in such a way that the mixture receives eutectic or approximately eutectic structure, through which before the actual soldering process a phase state is created in the solder which in the ensuing soldering process causes the whole soldering material to melt without a time lag at a temperature immediately above the eutectic temperature. |
