use of metal templates for microcavity formation in alumina

(a) (b)
A B A
B
(c) (d)
A
(e)
Figure 4.15. SEM micrographs of alumina that used Ti wire (a) alumina CR6
(b) alumina CR15 (c) alumina CR30F (d) alumina AKP50 (e) alumina
CT3000SG.
According to Figure 4.15, some of the samples had cracks and porosity in
alumina. This is most likely because the sintering temperature used here is insufficient
to form a dense ceramic from unmilled and undoped powder (Goodshaw et al., 2009).
Secondly, the Ti wire seems to be still present in the alumina. Therefore, the diffusion
region in Figure 4.15 shows consequential contrast, and EDS analysis of zones within
the diffusion region display that either Al or Ti is present.
B
A B
A B
40