Craft · 6 pages · 12 min
How a kiln changes clay into ceramic
Firing drives off water, collapses the clay minerals, and sinters the particles into a permanent body.
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From the opening
A kiln changes clay into ceramic by heating it until the soft, dry body becomes a hard material that will not slake back into mud. Pore water leaves first, the clay minerals then lose chemically bound water, and with more heat the particles sinter and begin to fuse. The opening covers pore water, then chemical water, particles sinter into a hard body, and quartz changes size as it heats.
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Inside
- Pore water, then chemical water
- Particles sinter into a hard body
- Quartz changes size as it heats
- Fired clay will not slake
- Where the idea stops applying
- A distinction worth keeping
Sources
- Quartz inversion during ceramic firing
- Sintering and vitrification of clay