期刊
ADVANCED ENGINEERING MATERIALS
卷 18, 期 11, 页码 1967-1973出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.201600229
关键词
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资金
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA02 040200]
- Program of International S&T Cooperation, ANSTO-SINAP [2014DFG60230]
In this paper, SiC fiber reinforced SiC composite (SiCf/SiC) is joined to Hastelloy N alloy using 82.5Au-17.5Ni (wt%) foil as brazing filler. The microstructural evolution of the joints is investigated using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD), and Raman spectroscopy. The shear strengths of the joints are tested by the mechanical testing machine. The results show the formation of nanocrystalline graphites, Ni2Si layer, and Ni31Si12 phases. With increasing temperature, Ni2Si is transformed gradually into Ni31Si12. The shear strength reaches a maximum value of 24.5 MPa when the joint is brazed at 1 000 degrees C for 30 min.
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