2Relaxed Posted October 21, 2020 Report Share Posted October 21, 2020 I'm trying to understand what percentages mean for each element in a line like this: MgO 0.42* 9.79%w 13.17%m What does "w" stand for beside the first percentage? What does "m" stand for beside the second percentage? Link to comment Share on other sites More sharing options...
Dick White Posted October 21, 2020 Report Share Posted October 21, 2020 The 0.42 is the amount of MgO within the Seger Unity (AKA UMF for Unity Molar Formula) of all fluxes totaling to 1.00. The 9.79% is the percentage of MgO by weight in the total recipe. The 13.17% is the molar percentage of MgO in the total recipe. Link to comment Share on other sites More sharing options...
PeterH Posted October 21, 2020 Report Share Posted October 21, 2020 Worked example at Glaze Chemistry Basics - Formula, Analysis, Mole%, Unity, LOIhttps://digitalfire.com/article/glaze+chemistry+basics+-+formula%2C+analysis%2C+mole%%2C+unity%2C+loi I assume that you are familiar with the Seger Formula, and the advantages of ignoring the relative masses of the molecules when thinking about glaze structure. I've not seen %m before, but it looks like it is a single-column alternative to the Seger Formula when the latter's three-column structure doesn't make sense. For example: if a 'flux' is refractory at the firing temperature, or there is boron present. (As the quoted page says dynamic reassignment of oxides to the Seger groups by temperature is not practical at this time.) Link to comment Share on other sites More sharing options...
2Relaxed Posted October 21, 2020 Author Report Share Posted October 21, 2020 Ah, thank you for great responses! I obviously have a lot to learn about glaze chemistry, not just try to wing a recipe I get excited about! Link to comment Share on other sites More sharing options...
Sorcery Posted October 21, 2020 Report Share Posted October 21, 2020 Just control the flight path, don't clip the wings. Sorce Link to comment Share on other sites More sharing options...
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