The mechanical behavior of un‐doped and 1–10 wt.% aluminum titanate doped NiO‐YSZ anodes was evaluated in the oxidized and reduced state of the material. Sample bars 25 × 5 × 2 mm were fabricated and tested in a three‐point bending apparatus and statistical analyzes of the collected data were performed. A remarkable enhancement of the flexural strength was found both for the reduced and oxidized state of the material when compared to the un‐doped samples. In both cases, the development of a secondary phase was observed proportional to the doping amount of aluminum titanate. Morphological analysis along with preliminary phase identification and suspected mechanisms for strength enhancement are presented and discussed.
Al-C, Cr-C, Al-Cr and Al-Cr-C thin film coatings were sputtered onto Ni-201 substrates. Samples were deposited with 1.0 ± 0.3 mg cm −2 Na 2 SO 4 and exposed to dry air/2 ppm SO 2 gas atmosphere, at 700 • C for 250 hours. Coated samples had reduced corrosion rates relative to uncoated samples. Al-C and Cr-C coatings were not effective since NiO was the only compound detected on the surfaces; in contrast Cr-Al and Cr-Al-C developed protective layers of Al 2 O 3 and Cr 2 O 3 with Cr-Al-C coated samples having the least corrosion rate.
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