In this work, chromium coating conducted by magnetron sputtering was introduced to braze SiC ceramics using inactive AgCu filler metal. The results showed that reliable metallurgical bonding of SiC ceramics was obtained at 900°C for 10 minutes. SEM, XRD, and TEM were used to identify the reaction phase in the joint, and the typical interfacial microstructure was SiC/mixed CrSi₂ + Cr₂₃C₆ layer/CrSi₂/Ag(s,s)+Cu(s,s)/CrSi₂/mixed CrSi₂ + Cr₂₃C₆ layer/SiC. The shear strength of SiC joint using chromium coating brazed with inactive AgCu filler metal was 29.6 MPa and the joint fractured at the SiC substrate entirely after shear test. The proposed active element coating method provides a feasible way to achieve the brazing of ceramics.

中文翻译：

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用惰性AgCu钎料对经过铬涂层预处理的SiC陶瓷进行钎焊

在这项工作中，通过磁控溅射进行的铬涂层被引入使用非活性AgCu钎料钎焊SiC陶瓷。结果表明，在900℃下10分钟获得了SiC陶瓷的可靠冶金结合。用SEM，XRD和TEM来确定接头中的反应相，典型的界面微观结构是SiC /混合CrSi ₂  + Cr ₂₃ C ₆层/ CrSi ₂ / Ag（s，s）+ Cu（s，s ）/ CrSi ₂ /混合的CrSi ₂  + Cr ₂₃ C ₆层/ SiC。使用镀有惰性AgCu填充金属的铬涂层的SiC接头的剪切强度为29.6 MPa，在剪切试验后，接头在SiC衬底上完全断裂。所提出的活性元素涂覆方法提供了一种实现陶瓷钎焊的可行方法。