Fig. 2: Local morphologies of ceramics.

a–d SEM images and grain size distributions of BSN, BSTN, BSTN-0.1Ta, and BSTN-0.4Ta ceramics; (e, f) TC-sample and hot corrosive sample of BSTN-0.1Ta.
a–d SEM images and grain size distributions of BSN, BSTN, BSTN-0.1Ta, and BSTN-0.4Ta ceramics; (e, f) TC-sample and hot corrosive sample of BSTN-0.1Ta.