1. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Preliminary Uncoated Glass-to- Glass Bonding Tests with Indium Foil J. E. Indacochea A.G. Raraz M. Kupfer 18 June, 2010

2. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Objectives Establish experimental steps. Establish a proper samples arrangement. Determine optimum experimental parameters such as loading force.

3. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Experimental Setup Schematic Static plate Hydraulic loading force Glass samples Indium foil Steel sheets for uniform distribution of applied force

4. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Experimental Parameters Indium foil was made in-house by rolling indium wire. Oxide layer was scraped off under a minute before pressure was applied. 6000 psi was applied for 10 minutes. In air and room temperature.

5. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Glass-to-glass bonding The strength of the bond was not determined; however it is strong enough to resist tugging.

6. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Glass samples cracking It was seen that in this case, at a load force of 6000 psi, the glass (side-wall section) cracked and the pieces are still bonded. In other tests, window section samples began cracking at 1000 psi. Using a rubbery material to have a uniform distribution of the loading force was not successful. Other materials are going to be tested

7. T h e U n i v e r s i t y o f I l l i n o i s a t C h i c a g o Joining Science and Advanced Materials Research Laboratory Work in progress More tests are needed to determine optimum loading force. Improve samples arrangement to eliminate cracking (a better uniform distribution of the loading force). The next step is to run similar tests using glass samples with coated chromium and indium layers.