Fig. 2: Interfacial microstructure characterization for Nb joint and Zr joint. | Nature Communications

Fig. 2: Interfacial microstructure characterization for Nb joint and Zr joint.

From: Electrode interface optimization advances conversion efficiency and stability of thermoelectric devices

Fig. 2: Interfacial microstructure characterization for Nb joint and Zr joint.

a Composition profiles of as-prepared Nb joint. At.% represents the percentage of each kind atom. b Correlation between aging time and square of IRL thickness (x2) for Nb joint and Zr joint after aging at 923 K and 858 K, respectively. The insertion in b shows the linear relations between the IRL thickness and in initial aging time for Nb joint and Zr joint, indicating a chemical reaction control. Error bars represent the standard deviations of the IRL thicknesses.

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