活性金属ろうとアルミニウムによる高クロム白鋳鉄とセラミックスの接合 Joining of High Chromium White Cast Irons to Ceramics by Using Active Filler Metal and Aluminum
Effects of reaction layer and brazing temperature on the shear strength of high chromium white cast irons/Al<sub>2</sub>O<sub>3</sub>, Si<sub>3</sub>N<sub>4</sub>, SiC joints are studied using active filler metal and aluminum. The microstructures and reaction layer in the joints are investigated by scanning electron microscopy and X-ray diffraction. Shear strength of about 180-200 MPa was obtained at high chromium cast irons-Al<sub>2</sub>O<sub>3</sub> and Si<sub>3</sub>N<sub>4</sub> joints brazed at 1123-1173K for 15 min, though the shear strength decreased to 150-160 MPa at 1073K for 15 min. In the case of high chromium white cast irons-SiC joint brazed at 1173-1373K for 5 min, shear strength of about 30-50 MPa. was obtained. Reaction products TiO or TiN were formed in the interface between active filler metal and Al<sub>2</sub>O<sub>3</sub>, Si<sub>3</sub>N<sub>4</sub>, two compounds (Al<sub>3</sub>Fe, Al<sub>4</sub>C<sub>3</sub>) were formed in the high chromium cast irons-SiC joint brazed with aluminum filler metal. These reaction layer should influence the shear strength of high chromium cast irons-ceramic joints.
- 鋳造工学 = Journal of Japan Foundry Engineering Society
鋳造工学 = Journal of Japan Foundry Engineering Society 70(12), 897-902, 1998-12-25