Abstract
The corrosion behavior of cold isostatically pressed (CIP) high purity alumina ceramics in aqueous HCl and H 2SO 4 solutions with various concentrations has been studied simultaneously at room temperature (25 °C). Corrosion tests were also performed with 0.65 mol/l HCl and 0.37 mol/l H 2SO 4 solutions at 40, 55 and 70 °C for 48 h. Chemical stability was monitored by determining the amount of Al 3+, Mg 2+, Ca 2+, Na + Si 4+ and Fe 3+ ions eluted in different concentrations of HCl and H 2SO 4 solutions by means of atomic absorption spectrometry (AAS). By increasing the concentration from 0.37 to 6.5 mol/l, it was notified that the corrosion susceptibility in HCl and H 2SO 4 solutions for the CIP alumina specimens at room temperature decreases.
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