Abstract
MgO thin films were deposited on Hastelloy C276 (HC) and 310 austenitic stainless steel bythe spray pyrolysis technique, using magnesium nitrate and magnesium acetate asprecursors. Thermogravimetrical analysis of the decomposition of the precursors was usedto provide a guideline temperature for the thin film deposition. It was suggested that anamorphous MgO thin film was deposited on both 310-stainless steel and Hastelloy C-276when using low concentration of the magnesium nitrate precursor. Higher concentrationswere needed to obtain (200) oriented MgO films on C276. However, 310-stainless steel wasfound to not be a suitable substrate for MgO thin film deposition due to surfaceinstability. A (200) oriented MgO thin film was grown on Hastelloy C276 using amagnesium acetate precursor at a much lower concentration compared to the nitrateprecursor. The characterization of the thin films was done using scanning electronmicroscopy, x-ray photoelectron spectroscopy, atomic force microscopy, x-ray diffraction2θ-scans, rockingcurves (ω-scans), and pole figure measurements. MgO was found to have a very weak in-planetexture.
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