Synthesis of Silver Free Eutectic Alloys for Be and Cu99.32Cr0.6Zr0.08 Brazing

Abstract:

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Silver free Ti-43at.%Cu (Ti-Cu) eutectic alloy have been developed for the brazing of Be and Cu99.32Cr0.6Zr0.08 (CuCrZr). The structural and microstructural properties of the as obtained alloys were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS). The analysis have revealed that the Cu-Ti eutectic alloy have a fine and homogeneous eutectic structure with the phase composition corresponding to the Ti-Cu phase diagram. These observations are consistent with the thermal properties of the alloys determined by DTA-TG analysis. The role of Mn on the eutectic structure, as well on the wetability properties was also studied. The effect of Mn is to produce a less coarse eutectic structure and to decrease the wetability angle. The mechanical testing of CuCrZr/Ti-Cu/CuCrZr junctions have demonstrated that these alloys are suitable for the brazing of Be and CuCrZr. The shear strength of the CuCrZr/TiCuMn/ CuCrZr increases with Mn concentration reaching the value of about 280 MPa for 2at% Mn.

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Periodical:

Edited by:

Ionel Chicinaş and Traian Canta

Pages:

311-314

DOI:

10.4028/www.scientific.net/AMR.23.311

Citation:

T. Petrişor et al., "Synthesis of Silver Free Eutectic Alloys for Be and Cu99.32Cr0.6Zr0.08 Brazing", Advanced Materials Research, Vol. 23, pp. 311-314, 2007

Online since:

October 2007

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Price:

$35.00

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