Abstract
We considered the possible formation of a bond between a ceramic (Al2O3) and a metal (titanium). We first concluded that a direct bonding of these two materials would be very unsatisfactory. We managed to obtain good bonding through an (Al2O3 +xTi) cermet placed between the two initial materials. Diffusion tests with Al2O3/Ti or (Al2O3 +xTi)/Ti couples have shown the appearance of densified layers in the diffusion zone. The study of the influence of the titanium content in the cermet permitted values ofx to be determined which give an appropriate continuity (10 ⩽x ⩽ 25 wt%) across the interface. Measurements by micro probe have shown that the mobility of the Al3+ ion has a predominant influence in the process leading to the bonding. The nature of the sintering atmosphere plays an important role in the sintering capacity of (Al2O3 +xTi) cermet as well as the densification of the samples.
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Braichotte, G., Cizeron, G. Sintering of (alumina + titanium) powder mixtures and elaboration of the corresponding cermets. J Mater Sci 24, 3123–3136 (1989). https://doi.org/10.1007/BF01139030
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DOI: https://doi.org/10.1007/BF01139030