钎缝

In the interfacial layer near to SiC, elements Pd and Ni preferentially diffused to SiC and resulted in the reaction products of Pd-Si phase, Ni-Si phase and graphite. In the reaction zone further away from the SiC, mainly elements Cr and V in the brazing filler participated in the interface reaction, and formed Cr-C, Cr-Si, Cr5Si3C. In the central part of the joint, the matrix was composed of Pd-Si, Ni-Si and V-Si phases, on which some blocky carbides V2C, Cr23C6 distributed scatteringly.

MPa。微观分析表明，在靠近SiC的界面反应层中，主要是Pd和Ni优先与SiC反应生成相应的Pd-Si相，Ni-Si相和石墨；接头中在离SiC稍远的区域，主要是Cr和V与母材扩散进入钎缝且未与Pd和Ni反应的C和Si发生反应，生成Cr-C， Cr-Si， Cr5Si3C 等相；钎缝中心区的基体由Pd-Si，Ni-Si和V-Si相组成，其上弥散分布着块状碳化物V2C和Cr23C6。

In this paper, Si_3N_4 ceramics were brazed with different thickness Ag-Cu-Ti alloy, and effects of weld thickness on the joint strength were investigated.

采用不同厚度的Ag-Cu-Ti钎料连接 Si3N4陶瓷材料，研究了钎缝厚度对连接强度的影响规律，利用扫描电镜观察了接头微观结构。

The main structures in the brazed seam are Cu and Ag solid solutions.

钎缝组织主要为Cu的固溶体与Ag的固溶体。

The fillets were annealed for different time intervals and only a little improvement of their strength and bending capacity was observed.

最后，在钎焊温度下对钎缝进行了不同时间的保温处理，发现钎缝的强度和抗弯能力仅有不大程度的改善。

In addition to the influences of brazing temperature and the composition of filler metal, the rate of solution of base metal into molten fil...

最后，在钎焊温度下对钎缝进行了不同时间的保温处理，发现钎缝的强度和抗弯能力仅有不大程度的改善。

The remelting temperature of 1Cr18Ni9Ti stainless steel joint brazed with the nickelbase filler metals is investigated by the use of both the microstructure analysis and the differential thermal analysis.

在钎焊过程中，熔化的钎料与不锈钢相互作用，使得焊后钎缝的成分不同于所用钎料的成分，钎缝的重熔温度也不同于钎料的熔点。

The remelting temperature of 1Cr18Ni9Ti stainless steel joint brazed with the nickelbase filler metals is investigated by the use of both the microstructure analysis and the differential thermal analysis.

利用金相试验和差热分析方法，系统地研究了用镍基钎料钎焊1Cr18Ni9Ti时钎缝的重熔温度随钎焊工艺变化的规律。

The research indicate that the performance of brazing joint using Al-Ge-Si brazing filler metal precedes to the one using HL401 brazing filler metal. And the main reason is that brittle compound such as Cu2Al is not appeared in brazing joint.

本研究建立的2090Ce铝锂合金钎缝组织形态成长模型以及母材溶解厚度控制模型对钎料的选择、钎焊工艺参数的选择及接头钎焊间隙的确定等具有重要的参考和指导作用。

Compared with the joint brazed with Cu-Ti filler metal, the content of Cu in the reaction layer adjacent to the stainless steel is higher than the joint brazed with Cu-Co-Ti filler metal, so is the content of Nb in brazing seam.

与Cu-Ti钎料接头相比，Cu-Co-Ti钎料接头中钎缝与不锈钢侧的反应层中Cu含量较高，钎缝中Nb含量也较高。

As the brazing temperature was low or the holding time was short, lots of low-melting M3B2 were precipitated in the central part of the brazing seam.

当钎焊温度较低或保温时间较短时，钎缝中央生成大量的M3B2；随着钎焊温度的升高及保温时间的延长，钎缝中M3B2、MC减少，M23C6增多、长大。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。