| Changes of a Corroded Glass Surface on Storage
at Room Temperature |
RAJLAKSHMI SEN, M. CHAKRABORTY, s. BASU AND A. PAUL
Pages : 166-174
DOI : 10.1080/0371750X.1981.10822542 |
| Abstract |
| A 20Na20, 80Si02 glass was corroded at 30° and sooc for different
lengths of time with leach solutions buffered at pH values 0, 10 and 12.
The corroded glass surfaces were examined with optical microscopy,
and in some cases with Electron Microprobe Analysis. The surfaces
were examined just after removal from the leach solution and after
storage for 16 hours in a desiccator at room temperature. The glass
surface after corrosion showed extensive pitting, cracking, crystal
formation; the nature and degree of which varied with changing pH
value and temperature of the leach solution and time of corrosion. The
morphology of the corroded glass surface changed significantly
during storage in a desiccator. At pH 10 and 12 (where the buffered
leach solution contained K+) part of Na+ (glass) was found to be exchanged
forK+ (solution), the concentration of K+ within the leached
layer increased with increasing activity of potassium ion in the leach
solution. |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
