Actively brazed alumina to alumina joints using CuTi, CuZr and eutectic AgCuTi filler alloys

Jasim KM, Hashim FA, Yousif RH, Rawlings RD, Boccaccini AR (2010)

Publication Type: Journal article

Publication year: 2010

Journal

Ceramics International Elsevier

Publisher: Elsevier

Book Volume: 36

Pages Range: 2287-2295

DOI: 10.1016/j.ceramint.2010.07.029

Abstract

Al2O3 to Al2O3 joints were produced using a one stage active brazing technique based on CuTi, CuZr and AgCuTi active brazing alloys. Single- and double-butt joints were used for microstructural (light and scanning electron microscopy and X-ray diffraction) and mechanical property (double shear test) studies, respectively. The joints produced with CuZr filler alloys (containing 2%, 4%, 6% and 8% Zr, wt%) showed low shear strengths (0.2-0.4 MPa) due to the presence of ZrO2 at the braze-substrate interface and failed in mode I crack opening. Higher shear strengths of 15-24 and 42 MPa were obtained by using CuTi filler alloys (containing 2%, 4%, 6%, 8% and 10% Ti, wt%) (mode II/mode III dependent on the Ti content) and the eutectic (Ag-27 wt% Cu-5 wt% Ti) alloy, respectively. The high shear strengths were attributed to the small amount of Cu 2(AlTi)4O at the braze-substrate interface and led, in the case of the ternary alloy, to the failure of the substrate rather than the braze (mode III axial splitting). © 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine GB United Kingdom (GB) Thi Qar University / جامعة ذي قار IQ Iraq (IQ) University of Baghdad IQ Iraq (IQ)

How to cite

APA:

Jasim, K.M., Hashim, F.A., Yousif, R.H., Rawlings, R.D., & Boccaccini, A.R. (2010). Actively brazed alumina to alumina joints using CuTi, CuZr and eutectic AgCuTi filler alloys. Ceramics International, 36, 2287-2295. https://doi.org/10.1016/j.ceramint.2010.07.029

MLA:

Jasim, K. Mohammed, et al. "Actively brazed alumina to alumina joints using CuTi, CuZr and eutectic AgCuTi filler alloys." Ceramics International 36 (2010): 2287-2295.

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