Thursday, October 10, 2024
Temperature Gradient Test
Previous experience with tin oxide has been on fired glass, and the decomposition temperature of tin (II) chloride is listed as 632C. But I never tested it. So this time I heated the remains of a shattered slide to 450C at one end with the other just happening to be at 170C. The abused slide looks like this:
There is a sweet spot on the slide for conductivity marked between. Assuming even deposition (which it's not) and an even temperature gradient (which it isn't) the best conducting deposit seems to be around 265C, give or take quite a bit. This is not the clearest part of the slide but the high end has a best conductivity of 4.5M and the best part about 900K. So in the future I'll try not to get so melty. A hotplate or toaster oven might be more suitable than the improv firebrick furnace and gas torch.
The high end does look nicer though.
The slide did of course fragment due to thermal stress as I was probing at it, but I got good readings before it did.
