Sample

Ecorr (mV)

Ep (mV)

Icorr (μA)

Grain size (μm)

As-received

−407.00

404.69

1.004

35.00

1273 K

−488.57

501.30

107.200

5.47

1323 K

−485.39

−31.53

20.226

5.85

1373 K

−485.23

415.00

52.959

7.22

1423 K

−478.49

462.29

8.204

7.35