Abstract
We report a novel strategy for rapid joining of yttria-doped ZrO2 and Ni at 1373K in a vacuum without using any brazing filler or other types of interlayer. Electrochemically-driven diffusion bonding was established at the Ni–ZrO2 interface by applying an external electric power, and the interfacial chemistry was readily manipulated by altering the current polarity and intensity. The underlying mechanisms were addressed based on the considerations of current-induced oxygen ion movement and atomic diffusion and reaction.
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