Reputation: 0 Neutral
- Active Posts:
- 5(0.03 per day)
- Most Active In:
- Clay and Glaze Technical (5 posts)
- 05-December 12
- Profile Views:
- Last Active:
- Dec 10 2012 09:51 PM
Topics I've Started
Posted 5 Dec 2012I'm not sure if this is the right place to address this topic, but I'll go for it.
I had a class assignment to make any kind of experiment to learn more about material science, so I decided to test if pennies, nickels, and dimes could be used as a colorant when submerged in a glaze, and taken to cone 10. This definitely didn't work, as the nickels and dimes melted, and actually burned through the clay test trays :/ but the pennies did something so strange that I really cannot begin to understand...
The first is a penny alone in a clay tray, taken to cone 10
Number of downloads: 550
The second is a penny submerged in a clear glaze and taken to cone 10
Number of downloads: 520
All my penny tests grew these hard, textured, cord-things. It was definitely a shock.
I'm wondering if the reason for this is that the Zinc being the majority of the penny (I used post 1983 pennies) turned to calx because it melts at such a lower temperature, and since the copper is surrounding the zinc, maybe the zinc was pushing it's way out of the core and squeezed out, hardening along the way??
Does anyone have any ideas? I'm open to any thoughts, I'm completely confused by these little aliens!!
- Member Title:
- Age Unknown
- Birthday Unknown
MariaPolky hasn't added any friends yet.