The densification of a ceramic coating based on SiO 2-Al 2O 3-TiO 2 by using wet processing was investigated by adding excess alkali silicates. Ceramic composite films (80-100 μm thick) were deposited on a steel plate by slurry coating with a doctor blade, followed by drying and calcination. The corrosion test in 1 mol/l HCl solution revealed that the number of through-holes in the coating decreased drastically with increasing amount of alkali silicates in the range of 26 to 33 or 40 wt.%. The coatings involving alkali silicates of 33 or 40 wt.% were stable to heating up to 800°C in air. The adhesive strength was also found to increase by three times with increasing amounts of alkali silicates.
|Number of pages||11|
|Publication status||Published - Dec 1 2004|
|Event||206th ECS Meeting - Honolulu, HI, United States|
Duration: Oct 3 2004 → Oct 8 2004
|Other||206th ECS Meeting|
|Period||10/3/04 → 10/8/04|
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