Graphene nanoplatelets (GNPs) were used as reinforcement in AgCuTi filler for brazing SiC ceramic. Ti from the filler reacted with SiC ceramic to form TiC and Ti₅Si₃ adjacent to the SiC ceramic. According to the TEM and HRTEM results, TiC layer exhibited good lattice matching with SiC substrate. TiC particles synthesized by the reaction between Ti and GNPs in situ promoted the heterogeneous nucleation of TiCu and Cu(s,s), and contributed to the refinement of microstructure. Shear tests results indicated that the adoption of GNPs affected the joint property significantly. The TiC particles and an appropriate TiC + Ti₅Si₃ layer thickness both relieved the residual stress of the brazed joint and thereby increased the joint strength. The shear strength of the joint reached the maximum value of 38 MPa when using AgCuTi/GNPs (GNPs reinforced AgCuTi) composite filler containing 1% GNPs, which was ∼139% higher than that of the joint brazed with AgCuTi filler.

石墨烯纳米片（GNP）用作AgCu​​Ti填料中的补强材料，用于钎焊SiC陶瓷。填料中的Ti与SiC陶瓷反应形成TiC和与SiC陶瓷相邻的Ti ₅ Si ₃。根据TEM和HRTEM结果，TiC层与SiC衬底表现出良好的晶格匹配。Ti与GNPs原位反应合成的TiC颗粒促进了TiCu和Cu（s，s）的异质成核，并有助于微结构的细化。剪切试验结果表明采用GNPs会显着影响关节的性能。TiC颗粒和适当的TiC + Ti ₅ Si ₃层厚既减轻了钎焊接头的残余应力，又增加了接头强度。当使用含1％GNPs的AgCuTi / GNPs（GNPs增强AgCuTi）复合填料时，接头的剪切强度达到38 MPa的最大值，比钎焊AgCuTi填料的接头高139％。