Calcium aluminosilicate glass corrosion by phosphoric acid

Journal Article · Sat Nov 01 00:00:00 EST 1980 · Am. Ceram. Soc. Bull.; (United States)

OSTI ID:6627719

Thakore, N C; Rockett, T J

The corrosion rates of a series of calcium aluminosilicate and sodium calcium aluminosilicate glasses were determined in three phosphoric acids at several temperatures. The effect of temperature on corrosion rate was determined for one glass in 30 wt % H/sub 3/PO/sub 4/; an activation energy was determined as well. The glasses are virtually insoluble at silica concentrations of >55 wt % SiO/sub 2/ and show extreme solubility at silica concentrations <50 wt %. At the trsnsition composition, a silica-gel layer is formed on the surface.

• Research Organization: Univ. of Rhode Island, Kingston
• OSTI ID: 6627719
• Journal Information: Am. Ceram. Soc. Bull.; (United States), Vol. 59:11
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM SILICATES
CORROSION
CALCIUM SILICATES
GLASS
PHOSPHORIC ACID
CORROSIVE EFFECTS
SODIUM SILICATES
ACTIVATION ENERGY
SILICA GEL
ADSORBENTS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CALCIUM COMPOUNDS
CHEMICAL REACTIONS
ENERGY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
OXYGEN COMPOUNDS
SILICATES
SILICON COMPOUNDS
SODIUM COMPOUNDS
360205* - Ceramics
Cermets
&amp; Refractories- Corrosion &amp; Erosion