The line scanning result is

Fig. 5. Transient photocurrent response comparisons of alumina coatings with 0.0%Cr and 1.5%Cr.Figure optionsDownload full-size imageDownload high-quality image (93 K)Download as PowerPoint slide
Compared to the CMAD technique, the sol–gel procedure produced powders at different sintering temperatures at the same concentration of chromium as the CMAD technique. The XRD results are summarized in Fig. 6 and elucidate that LDN 57444 the aluminum oxide hydroxides are Bayerite for 0.0%Cr powder and Bohmite for 1.5%Cr powder. The precursors of the two samples followed the same polymorphic transformation before 1000 °C. It is generally accepted that the un-doped precursor undergoes the sub-adjacent series before the final conversion to the stable phase α-Al2O3[25] as:BayeriteorBohmite→γ−Al2O3→δ−Al2O3→θ−Al2O3→α−Al2O3
Fig. 6. XRD patterns of the alumina precursor powders calcined at (a) 100 °C, (b) 600 °C, (c) 900 °C, and (d) 1000 °C.Figure optionsDownload full-size imageDownload high-quality image (103 K)Download as PowerPoint slide