. High fire porcelain glazes. . Fig. 3.—Solid diagram of deformation temperatures Bureau of Standards Technologic Paper No. 196. Figs. 4 and 5.—Solid diagrams of deformation temperatures High Fire Porcelain Glazes 7 proached. From that point the temperature increase with incre-ments of clay is more abrupt. Decrease in the flux content (feldspar and whiting) increasesthe temperature of deformation gradually until it approaches 30per cent, after which further reductions cause a rapid rise intemperature. The deformation eutectic axis starts at approximately 20 percent clay, 10 per cent flint, and
. High fire porcelain glazes. . Fig. 3.—Solid diagram of deformation temperatures Bureau of Standards Technologic Paper No. 196. Figs. 4 and 5.—Solid diagrams of deformation temperatures High Fire Porcelain Glazes 7 proached. From that point the temperature increase with incre-ments of clay is more abrupt. Decrease in the flux content (feldspar and whiting) increasesthe temperature of deformation gradually until it approaches 30per cent, after which further reductions cause a rapid rise intemperature. The deformation eutectic axis starts at approximately 20 percent clay, 10 per cent flint, and 70 per cent fluxes, and runs in astraight line to approximately 10 per cent clay, 55 per cent flint,and 35 per cent fluxes. At this point the axis deflects to a higherclay content. M zs K5 5 O Zu-J5 /.5 /MMArc QO O u 10 §^§?Sx$w 1111 m< MAT _, 1:1c 5 —- iiJWh RANC£_- §§§§§§ S$S§5JsS .0 do 10CONC 10 70 ao EQUIVALENTS SiO* //.0 Fig. 6.—Porcelain glazes at cone JO /&0 CfiAZlNO A plaster of Paris solid diagram was made of the field as plot
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