One special issue still unresolved for the development of the future fusion power plants is the necessity of finding joining technologies between W and Eurofer. In this paper, the use of copper as filler material to join W to Eurofer is explored. By that, the effect on the brazeability of different process parameters such as filler thickness, brazing temperature and post-weld heat treatment has been evaluated. The results indicated the consecution of high continuity interfaces where tungsten is involved in the formation of different reaction layers. The mechanical properties indicated that the strength of the joints are highly influenced by the different studied parameters having found that brazing temperature of 1135 °C is more adequate (309 MPa). The application of a tempering treatment to reduce the thermal stress of the steel produces a softening effect in the joint reducing the strength down to 148 MPa, giving rise to joints that are more ductile.

对于未来的聚变电站的发展，仍未解决的一个特殊问题是在W和Eurofer之间寻找连接技术的必要性。本文探讨了使用铜作为填料将W连接到Eurofer的方法。这样，就评估了不同工艺参数（如填料厚度，钎焊温度和焊后热处理）对钎焊性能的影响。结果表明高连续性界面的连续性，其中钨参与了不同反应层的形成。力学性能表明，接头的强度受不同研究参数的影响很大，已发现1135°C的钎焊温度更为合适（309 MPa）。