Fig. 4

Cross-sectional microstructure of YD-5 body-glaze interfaces. (a) Microstructure of body-glaze cross-sections (SEM-SE) (b) Interface layer (SEM-SE) (c) Bubbles in the glaze layer (SEM-SE) (d) EDS Spectrum3 (e) EDS Spectrum4 (f) Polygonal crystals near the upper glaze and bubbles (SEM-SE) (g) EDS Spectrum5 (h) EDS Spectrum6 (i) Magnified view of anorthite crystals in the glaze layer (SEM-SE) (j) EDS Spectrum7 (k) Comb-like cristobalite (SEM-SE) (l) Flake-like mullite and partially melted quartz grains (SEM-SE) (m) Zircon (SEM-SE) (n) EDS Spectrum8.