puffing

https://doi.org/10.1351/goldbook.P04941
An irreversible expansion of some @C00823@ during @G02692@ between \(1650\) and \(2700\ \text{K}\).
Note:
Puffing is caused by the release of heteroatoms, for instance sulfur atoms, from the @C01142@ in @A00472@ with specific microstructural rearrangements.
Source:
PAC, 1995, 67, 473. (Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)) on page 502 [Terms] [Paper]