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WANG Juan, LI Yajiang, S. A. GERASIMOV. Microstructure and shear strength of diffusion brazed Al2O3-TiC/Q235 joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (12): 25-28.
Citation: WANG Juan, LI Yajiang, S. A. GERASIMOV. Microstructure and shear strength of diffusion brazed Al2O3-TiC/Q235 joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (12): 25-28.
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Microstructure and shear strength of diffusion brazed Al2O3-TiC/Q235 joint

  • 1.

    Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China

  • 2.

    Materials Science Department, Bauman Moscow State Technical University, Moscow 105005, Russia

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  • Received Date: December 17, 2007
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  • An Al2O3-TiC/Q235 joint, Al2O3-TiC ceramic composite with steel Q235, was obtained by diffusion brazing in vacuum, using a combination of Ti and Cu as multi-interlayer.The interfacial strength was measured by shear testing and the result was explained by the fracture morphology.Microstructure of the Al2O3-TiC/Q235 joint was investigated by scanning electron microscope (SEM), energy-dispersion spectroscopy (EDS)and X-ray diffraction (XRD).The results indicate that the Al2O3-TiC/Q235 joint with a shear strength of 122 MPa can be obtained by controlling heating temperature at 1 110℃, multi-interlayer Ti/Cu/Ti is fused fully and diffused reaction to produce an obvious interfacial transition zone with a thickness of about 80 μm, and there are Ti3AlC2, Fe2Ti, Cu and TiC in the transition zone.
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