 |
Visits: 85156311
AMS now reading: 1
|
|
|
|
|
 |
|
|
| Longauerová M., Fedorová M., Longauer S., Kadlec J., Bořuta J., Fujda M., Janák G., Vojtko M. |
| HETEROGENEITIES OF CHEMICAL COMPOSITON IN CAST PRODUCTS |
| Keywords: Slabs|surface segregation|structure heterogeneities|centreline noncompactibilities|round blooms|central segregation| |
| No 1 (2007), p. 17-25 |
|
|
|
| Takahashi M., Ikeuchi K. |
| ELECTROSTATICALLY INDUCED PRECIPITATION OF SILVER IN SILVER-IMPREGNATED GLASS ANODICALLY-BONDED TO SILICON |
Abstract
Silver is of interest to glass scientists due to its high mobility in glass – which is comparable to sodium’s mobility. In this study, silver-impregnated glass was produced from borosilicate glass. The silver addition was intended to prevent formation of joint defects caused by accumulation of sodium at the joint interfaces in anodically bonded joints with application of a voltage in the direction opposite to that for bonding. The silver, due to its high mobility, served to substitute for sodium near the faying surface.
Joinability of the silver-impregnated glass to silicon by anodic bonding was equivalent to that of usual borosilicate glass. With application of the reverse voltage, the joint interface in the joint of silver impregnated glass colored gray, and no joint defects formed there. In those joints accumulation of sodium at the joint interface was inhibited, and silver accumulated there instead. Accumulating silver did not cause joint defects but rather formed micron-size precipitates of corollaceous configuration in the glass adjacent to the joint interface. Those precipitates caused a change in color of the joint interface.
|
| Keywords: anodic bonding|silicon|glass|silver|ion substitution|prevention of joint defect| |
| No 1 (2007), p. 26-35 |
|
|
|
|
|
|
|
Editors and press
AMS online
