Untersuchung zur Korrosionsbeständigkeit von Porzellan und Steinzeug

Investigation into the corrosion resistance of porcelain and stoneware The author communicates the results of corrosion tests made with porcelain and stoneware in contact with acid and alcaline media (sulfuric acid, phosphoric acid, nitric acid, hydrochloric acid, NaHO₂ KHO) under rigid conditions resembling those encountered in practice (oboiling temperature, flow velocities upto 1 m/s). while the acid resistance can as a rule be considered very good there is considerable attack by alcaline media. In this context there is a close interdependence between the attack and the composition of the materials and the nature of the glassy and crystalline phase present. Aluminated materials show good resistance somewhat reduced.