Fig 4.
SEM analysis of the interfaces from each group (x2,000 magnification). (a) VM 9/Zr (0.9: 0.3). (b) VM 9/Zr (0.7: 0.5). (c) VB/Zr-SBU (0.9: 0.3). (d) VB/Zr-SBU (0.7: 0.5). (e) VB/Zr-RC (0.9: 0.3). (f) VB/Zr-RC (0.7: 0.5).
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