2009
DOI: 10.4028/www.scientific.net/kem.409.260
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Abstract: The present work studies the corrosion of three most widely used types of structural ceramics – silicon nitride, solid state sintered alumina and liquid phase sintered alumina – in 3 % aqueous solutions of sodium chloride at temperatures up to 290 °C and pressures up to 7 MPa. The corrosion of silicon nitride was controlled by attack of Si3N4 matrix grains, while yttrium oxynitride amorphous grain boundary phase was corrosion resistant. Corrosion of Si3N4 in reference media -distilled water - at 290 °C was cha… Show more

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“…Additional corrosion tests in water at 80 °C for 40 days were carried out for IVOCLAR and leaching solutions were also analyzed by ICP-MS. The concentration of leached ions (Qit) was calculated according to the formula: The normalization (NLit) of the concentration of the leached ion (Qit) to its content in the material itself (wi) provides information on the dissolution of the material as a whole, or whether or not the preferential dissolution of any of the present phases, either crystalline or glassy, can be assessed [22].…”
Section: Methodsmentioning
confidence: 99%
“…Additional corrosion tests in water at 80 °C for 40 days were carried out for IVOCLAR and leaching solutions were also analyzed by ICP-MS. The concentration of leached ions (Qit) was calculated according to the formula: The normalization (NLit) of the concentration of the leached ion (Qit) to its content in the material itself (wi) provides information on the dissolution of the material as a whole, or whether or not the preferential dissolution of any of the present phases, either crystalline or glassy, can be assessed [22].…”
Section: Methodsmentioning
confidence: 99%