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发明公开
CN106271209A 用于钎焊50Mo-50Re合金的高温Fe基钎料及制备方法和钎焊工艺 有权 转让

用于钎焊50Mo-50Re合金的高温Fe基钎料及制备方法和钎焊工艺
摘要：
本发明公开了一种用于钎焊50Mo-50Re合金的高温Fe基钎料及制备方法和钎焊工艺，所选钎料以重量百分比计的元素成分包括：Co4％～9％，Ni3％～12％，Si3％～8％，B0％～3％，Nb3％～5％，余量为Fe。该制备方法为将以下组分Fe颗粒、Si颗粒、B颗粒、Co颗、Ni颗粒和Nb颗按比例混合均匀，采用真空感应熔炼炉及高真空甩带机，将钎料制备成箔片带状，厚度在20～50μm的范围内。本发明钎料的钎焊温度在1060℃～1160℃，钎料熔化温度较高，保证了焊件的高温性能，同时钎料熔化均匀；使用钎料箔片有利于促进钎焊连接过程中合金元素的扩散，钎料箔片有利于促进钎焊连接过程中元素扩散，Fe元素与Mo元素可生成固溶体，Co和Nb元素可促进Mo和Re元素扩散进钎缝，形成较宽扩散层，提高钎缝性能。
摘要（英）：

The invention discloses a high temperature Fe-based solder for brazing 50Mo-50Re alloy and preparation method thereof, and brazing process. The solder includes the components with following weight ratios: Co 4wt%-9wt%, Ni 3wt%-12wt%, Si 3wt%-8wt%, B 0wt%-3wt%, Nb 3wt%-5wt%, and the balance Fe. The preparation method for the high temperature Fe-based solder comprises the following steps: mixing Fe particles, Si particles, B particles, Co particles, Ni particles and Nb particles evenly in proportion, making the solder into foil strip shape with a thickness ranging from 20-50Mum by using vacuum induction melting furnace and high vacuum spinning machine. The temperature for brazing the solder ranges from 1060-1160 DEG C, and the melting temperature of the solder keeps extremely high to ensure the high temperature performance of a weld. The solder is molten uniformly. The use of solder foil is conducive to promoting the diffusion of alloy elements in soldered connection process, and the solder foil is conducive to promoting element diffusion in soldered connection process. Solid solution can be generated by Fe element and Mo element; Co element and Nb element can promote the diffusion of Mo element and Re element in a brazing seam, so as to form a wide diffusion layer. The performance of the brazing seam is improved.

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