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Wettability and interfacial reaction of alumina and zirconia by reactive silver-indium base alloy at mid-temperatures

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Abstract

The wettability of sintered alumina and sintered zirconia by silver-indium base alloy with small titanium additions (< 5 at %) has been investigated using sessile drop tests conducted in a vacuum of 1.1–2.0 mPa at mid-temperatures 873–1150 K. The addition of titanium can effectively induce the silver-indium base alloy to wet the alumina and zirconia. Under the present experimental conditions, the silver-indium-titanium alloys on the alumina exhibited excellent wettability characterized by a minimum titanium addition for wetting transition (contact angle < 90°) of less than 0.2 at % Ti, whereas the alloy on the zirconia exhibited the minimum around 0.5 at % Ti. The minimum contact angle of the alloy-alumina system is about 5° and that of the alloy-zirconia system is about 15°. X-ray diffraction analysis shows that the reaction phases formed in the interface of the silver-indium-titanium alloy on the alumina are TiO2, TiO and Ti2O, and those formed in the interface of the alloy on the zirconia are TiO and Ti2O.

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Xue, X.M., Wang, J.T. & Sui, Z.T. Wettability and interfacial reaction of alumina and zirconia by reactive silver-indium base alloy at mid-temperatures. J Mater Sci 28, 1317–1322 (1993). https://doi.org/10.1007/BF01191971

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